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A reference glossary of 50 terms used in commercial cleaning chemistry & product chemistry. Definitions are anchored to primary sources from BLS, OSHA, EPA, ISSA, APPA, and CDC.
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Accelerated Hydrogen Peroxide
When a BSC needs a disinfectant that can satisfy a 30-second to 1-minute kill claim, comply with EPA Safer Choice requirements, and avoid the corrosion and bleaching hazards of sodium hypochlorite, Accelerated Hydrogen Peroxide (AHP) is often the answer. AHP is a stabilized formulation of hydrogen peroxide combined...
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Quaternary Ammonium Compound (Quat)
Walk into any BSC supply room and the majority of labeled disinfectant bottles will share one active-ingredient category: quaternary ammonium compounds, or quats (also QACs). These cationic surfactants disrupt microbial cell membranes and denature proteins at labeled use concentrations, making them the workhorses...
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Sodium Hypochlorite
No disinfectant chemistry in a BSC's toolkit kills Clostridioides difficile spores at a price point under $0.15 per diluted gallon — except sodium hypochlorite. That single fact explains why bleach remains indispensable in healthcare cleaning despite decades of alternatives entering the market.
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Hydrogen Peroxide
Also called: H₂O₂; Peroxide
Hydrogen peroxide is an oxidizing biocide used in cleaning as a disinfectant, bleaching agent, and stain remover. EPA-registered surface disinfectant concentrations range from approximately 0.5% to 7.9% by weight. At use dilution, hydrogen peroxide breaks down to water and oxygen, leaving minimal residue — a property that has contributed to its inclusion in
EPA Safer Choice-certified formulations. Efficacy against pathogens is contact-time and concentration-dependent; operationally, this means operators must verify that the diluted product applied to a surface meets the EPA-registered concentration and remains wet for the full label-specified contact time. Accelerated Hydrogen Peroxide (AHP) formulations stabilize the molecule with surfactants to extend efficacy at lower concentrations. Hydrogen peroxide at concentrations above 8% is classified as an oxidizer under DOT hazmat regulations and requires different handling and shipping documentation.
Related: Accelerated Hydrogen Peroxide, Sporicide, Contact Time, EPA Safer Choice, Safety Data Sheet
See also: /resources/product-guides/pfas-state-by-state-2026
Source: https://www.epa.gov/saferchoice/safer-ingredients
Surfactant
Also called: Surface-active agent
Surfactants are amphiphilic molecules — containing both a water-attracting (hydrophilic) head and an oil-attracting (hydrophobic) tail — that reduce the surface tension of water, enabling it to wet, emulsify, and suspend soil for removal. Anionic surfactants (negatively charged head groups) dominate janitorial cleaning products due to their effectiveness on mineral and organic soils and their compatibility with most water hardness levels. Cationic surfactants (positively charged) form the basis of quat disinfectants and are incompatible with anionic surfactants in the same formulation. Nonionic surfactants are charge-neutral and are used in products where foam control or compatibility with hard water is a priority.
EPA Safer Choice evaluates surfactant ingredients for aquatic toxicity and biodegradability before approving them in certified formulations. For BSCs, understanding surfactant class helps explain why mixing certain cleaning products reduces efficacy or causes unexpected reactions.
Related: Alkaline Cleaner, Quaternary Ammonium Compound, pH, Chelating Agent, EPA Safer Choice
See also: /resources/product-guides/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/saferchoice/safer-ingredients
Chelating Agent
Also called: Sequestrant
Chelating agents are chemical compounds that bind to metal ions — primarily calcium and magnesium in hard water — forming stable, water-soluble complexes that prevent those ions from interfering with disinfectant efficacy or depositing as mineral scale on surfaces and equipment. In janitorial products, chelating agents are added to disinfectants to protect quat activity in hard-water conditions, and to descalers and strippers to improve mineral removal. Common chelating agents include EDTA (ethylenediaminetetraacetic acid) and citric acid.
EPA Safer Choice reviews chelating agents for biodegradability and aquatic toxicity; EDTA, while effective, has limited biodegradability and is generally excluded from Safer Choice formulations. BSCs purchasing products for LEED or WELL specifications should verify that chelating agents in their cleaning products meet the applicable certification's ingredient standards.
Related: Surfactant, pH, Alkaline Cleaner, EPA Safer Choice, Descaler
See also: /resources/product-guides/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/saferchoice/safer-ingredients
pH
Also called: Potential of hydrogen
pH is a scale from 0 to 14 measuring the concentration of hydrogen ions in a solution. Values below 7 indicate acidity, 7 is neutral, and values above 7 indicate alkalinity. In janitorial chemistry, pH determines product category and appropriate surface application: acid cleaners (pH 1–6) dissolve mineral scale and rust deposits; neutral cleaners (pH 6–8) serve as daily maintenance products safe for most floor finishes and surfaces; alkaline degreasers (pH 8–11) emulsify fats and oils; and high-alkaline floor strippers (pH 12–14) break down polymer floor finish for mechanical removal. Applying the wrong pH product to a surface — for example, using an acid descaler on a marble floor or a high-pH stripper on a luxury vinyl tile — can cause irreversible surface damage.
EPA Safer Choice ingredient standards consider pH in the context of skin and mucous membrane irritation ratings. BSCs should record the pH range of every product in their chemical program as part of standard SDS management.
Related: Acid Cleaner, Alkaline Cleaner, Safety Data Sheet, Floor Finish, Descaler
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/saferchoice/safer-ingredients
Alkaline Cleaner
Also called: High-pH cleaner; base cleaner
Alkaline cleaners are formulated at pH greater than 7 and rely on hydroxide ions to saponify (convert to soap) fats and oils, making greasy soils water-soluble for removal. In janitorial applications, mildly alkaline all-purpose cleaners typically operate at pH 8–10; heavy-duty degreasers range from pH 10–12; and floor finish strippers operate at pH 12–14. The higher the pH, the more aggressive the cleaning action — and the greater the risk of surface damage, skin burns, and requirement for PPE under
OSHA 29 CFR 1910.138. Alkaline cleaners are the most widely used category in commercial janitorial programs. BSCs must match alkalinity to soil type and surface; using a pH 13 stripper on luxury vinyl tile (which requires pH-neutral maintenance) will damage the floor's wear layer.
EPA Safer Choice evaluates alkaline cleaning ingredients for human and environmental safety.
Related: pH, Acid Cleaner, Floor Finish, Wax Stripper, Personal Protective Equipment
See also: /resources/product-guides/floor-care-program-frequency
Source: https://www.epa.gov/saferchoice/safer-ingredients
Acid Cleaner
Also called: Descaler; acidic cleaner
Acid cleaners are formulated at pH below 7 and work by dissolving mineral deposits, rust stains, calcium carbonate scale, and uric salt buildups that alkaline cleaners cannot remove. Common active acids in commercial janitorial products include phosphoric acid (moderate strength, less corrosive), citric acid (mild, Safer Choice-compatible), sulfamic acid (moderate, commonly used in restroom descalers), and hydrochloric acid (strong, reserved for heavy scale removal). Acid cleaners must not be used on natural stone (marble, terrazzo, limestone), aluminum, or galvanized metal without verified chemical compatibility.
EPA Safer Choice programs have approved citric and sulfamic acid-based formulations but generally exclude strong mineral acids. BSCs using acid cleaners in restrooms must ensure adequate ventilation and provide appropriate PPE per the product SDS under
OSHA 29 CFR 1910.1200.
Related: pH, Descaler, Alkaline Cleaner, Safety Data Sheet, Urine Scale
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/saferchoice/safer-ingredients
Enzymatic Cleaner
Also called: Bio-enzymatic; enzyme cleaner
Enzymatic cleaners contain biological enzymes — most commonly protease (protein breakdown), lipase (fat breakdown), and amylase (starch breakdown) — that catalytically break down specific types of organic soil at the molecular level. Unlike detergent cleaning, enzymatic action continues as long as the enzyme remains active and substrate is present, which makes these products effective for drain maintenance, odor elimination at the organic source, and carpet stain treatment. Enzymatic cleaners are not EPA-registered disinfectants and do not carry kill claims; their function is soil digestion, not microbial kill.
EPA Safer Choice has approved several enzyme-based formulations. For BSCs, the common applications are restroom drain treatment (reducing biofilm and odor without caustic drain openers), carpet prespray for protein-based stains, and grease trap maintenance. Storage temperature matters: heat above approximately 140°F denatures enzymes and renders the product ineffective.
Related: Enzymatic Drain Treatment, Biofilm, Odor Counteractant, Surfactant, EPA Safer Choice
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/saferchoice/safer-ingredients
Solvent Cleaner
Also called: Solvent degreaser
Solvent cleaners remove non-polar soils — grease, adhesive residue, wax, and tar — through chemical compatibility rather than surfactant action. Common solvents in janitorial products include isopropanol, d-limonene, mineral spirits, and glycol ethers. Volatile organic compound (VOC) content in solvent cleaners is regulated at the federal level by EPA and, more stringently, by California's Air Resources Board (CARB) and the Ozone Transport Commission (OTC) states.
EPA National VOC Emission Standards set product category limits by weight percentage. BSCs operating in California or OTC states (Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C.) must ensure solvent-based products comply with applicable state limits. The SDS Panel 9 discloses VOC content; operators should document this for client sustainability audits or LEED specification requirements.
Related: VOC, Safety Data Sheet, Aqueous Cleaner, PFAS, EPA Safer Choice
See also: /resources/sustainability-iaq/pfas-state-by-state-2026
Source: https://www.epa.gov/stationary-sources-air-pollution/national-volatile-organic-compound-emission-standards-consumer
Aqueous Cleaner
Also called: Water-based cleaner
Aqueous cleaners use water as the primary carrier for active cleaning ingredients, in contrast to solvent-based systems that rely on organic solvents. Water-based formulations generally produce a lower VOC profile and a more favorable SDS hazard classification, which is relevant to LEED, WELL, and
EPA Safer Choice certification requirements in BSC programs. Most janitorial cleaning products — all-purpose cleaners, degreasers, disinfectants, and floor maintenance products — are aqueous systems, with varying concentrations of surfactants, alkaline builders, and active ingredients dissolved or emulsified in water. The aqueous vs. solvent distinction matters most in specialty applications: adhesive removal, floor finish stripping, and equipment degreasing, where solvent-based systems may outperform aqueous alternatives. BSCs purchasing products for sustainably certified accounts should confirm that aqueous formulations meet not only VOC requirements but also surfactant biodegradability and aquatic toxicity standards under the applicable certification.
Related: Solvent Cleaner, VOC, EPA Safer Choice, Safety Data Sheet, Green Seal
See also: /resources/sustainability-iaq/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/saferchoice
Ready-to-Use
Also called: RTU
Ready-to-use products are formulated and packaged at their working-strength concentration, requiring no further dilution before application. The EPA-registered label on a disinfectant RTU product specifies the active ingredient concentration at which kill claims were validated; diluting an RTU product further — even unintentionally through residual water in a spray bottle — may take the formulation below the registered concentration and invalidate the kill claim.
EPA Label Review Manual governs label language for RTU disinfectants. For BSCs, RTU products reduce the risk of dilution error and simplify training, but carry a higher per-unit cost than concentrate-based systems at equivalent volume. RTU packaging is common in healthcare and school accounts where dilution station infrastructure is unavailable or where regulatory compliance documentation requires a fixed-concentration product audit trail.
Related: Concentrate, Dilution Ratio, Kill Claim, EPA Registration Number, Color-Coded Chemical System
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/pesticide-registration/label-review-manual
Concentrate
Also called: Concentrated formula
Concentrate products are sold at a higher active-ingredient concentration than their use dilution and must be diluted per label directions before application. Using a disinfectant concentrate at full strength rather than its labeled dilution ratio may violate
FIFRA section 2(ee), which prohibits use inconsistent with the label, and may damage surfaces or create excess chemical exposure risk. Concentrate programs reduce packaging waste and shipping costs per use volume and typically lower chemical cost per diluted gallon compared to RTU alternatives. Dilution control systems — whether mechanical wall-mounted dispensers or single-dose packets — are the recommended delivery mechanism for concentrate programs in multi-account BSC operations because they eliminate manual measurement error and document dilution ratios. BSCs must ensure that every employee using concentrates can access and interpret the product SDS and label dilution table per
OSHA 29 CFR 1910.1200.
Related: Ready-to-Use, Dilution Ratio, Color-Coded Chemical System, FIFRA, Safety Data Sheet
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/laws-regulations/summary-federal-insecticide-fungicide-and-rodenticide-act
Dilution Ratio
A BSC that buys a $45/gallon disinfectant concentrate and tells workers to "fill the spray bottle halfway and top it off with water" has just introduced a variable that makes every kill claim on the product's EPA label legally unenforceable. Dilution ratio is the precisely specified proportion of concentrate to...
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EPA Registration Number
Also called: EPA Reg #; Reg number
Every pesticide product — including all disinfectants and sanitizers — sold in the U.S. must carry an EPA Registration Number assigned under
FIFRA. The format is XXXXX-XX, where the first number identifies the registrant (manufacturer or formulator) and the second identifies the specific product formulation. This number is required on every disinfectant label and enables verification of the product's registered kill claims through EPA's
Pesticide Product Label System (PPLS). For BSCs, the EPA Reg number is operationally critical: healthcare, institutional, and government contracts frequently require documentation that specific pathogens are covered by the disinfectant's registered claims. Searching the number on EPA's website returns the current registered label, which is the legal use document — not the distributor's sell sheet. When two products appear identical, a different EPA Reg number means a different formulation with potentially different kill claims and contact times.
Related: Kill Claim, FIFRA, EPA List N, Contact Time, Disinfectant
See also: /resources/product-guides/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/pesticide-registration/understanding-pesticide-labels
EPA List N
During the COVID-19 public health emergency, facility managers, school districts, and government agencies rewrote their cleaning specifications around a single phrase: "EPA List N product required." Three years later, that language is still embedded in contract templates, school district master specifications, and...
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EPA Safer Choice
Also called: EPA Safer Choice; DfE (legacy)
EPA Safer Choice is a voluntary certification program verifying that every ingredient in a product meets EPA's safety standards for human health and environmental impact, as defined in the
Safer Choice Standard. Ingredients are evaluated across categories including skin sensitization, aquatic toxicity, carcinogenicity, biodegradability, and VOC content. The program succeeds the EPA Design for Environment (DfE) label, which was rebranded in 2015. For BSCs, Safer Choice certification is referenced in LEED Existing Buildings: Operations + Maintenance credit categories, WELL Air and Materials concepts, and in institutional and government RFPs that specify environmentally preferred purchasing policies. Safer Choice is a product-level certification, not a company certification; each registered product carries a unique certificate number. BSCs should maintain product certification documentation (certificate numbers, effective dates) for audit and RFP response purposes.
Related: Green Seal, EcoLogo, Design for Environment, CIMS-GB, VOC
See also: /resources/sustainability-iaq/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/saferchoice
Green Seal Certification
A LEED O+M-certified Class A office building, a WELL-certified corporate campus, and a GSA federal building under Executive Order 14057 share one chemical procurement requirement: the cleaning products used in them must be third-party verified as environmentally preferable — and Green Seal is one of the three...
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EcoLogo
Also called: UL EcoLogo; UL Environment
EcoLogo is a third-party environmental certification administered by UL (formerly Environmental Choice Canada, acquired by UL in 2012). The program covers a broad range of product categories, including commercial cleaning products, and evaluates environmental criteria including ingredient safety, biodegradability, packaging, and VOC content.
UL EcoLogo is widely accepted in Canadian markets and is recognized by U.S. green building programs including LEED. For BSCs operating in Canada or serving multinational clients with Canadian operations, EcoLogo provides a certification pathway equivalent to EPA Safer Choice. In the U.S. market, some LEED specifications accept EcoLogo alongside Green Seal as compliant third-party certifications. BSCs should confirm which certifications are accepted under the specific LEED version and credit category applicable to a given client building before substituting EcoLogo-certified products for Green Seal-certified alternatives.
Related: Green Seal, EPA Safer Choice, CIMS-GB, LEED v5, VOC
See also: /resources/sustainability-iaq/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.ul.com/resources/ecologo-certification-program
Design for Environment
Also called: DfE
Design for Environment was an EPA voluntary partnership program that evaluated chemical ingredient safety for cleaning product formulations before transitioning to the EPA Safer Choice brand in 2015. Products approved under DfE displayed the DfE label (a stylized handshake) on packaging and marketing materials. The DfE label still appears on older product literature, distributor catalogs, and some facility specification documents written prior to the Safer Choice rebrand.
EPA Safer Choice history confirms the DfE-to-Safer Choice continuity: the underlying ingredient evaluation framework was carried forward. BSCs and procurement officers encountering DfE references in client specifications should confirm with the client or specifier whether EPA Safer Choice certification now satisfies the requirement, as the program name changed but the evaluation standard remained substantively the same. New product registrations use Safer Choice branding exclusively; no DfE certifications have been issued since 2015.
Related: EPA Safer Choice, Green Seal, EcoLogo, CIMS-GB, VOC
See also: /resources/sustainability-iaq/green-seal-ecologo-safer-choice-cims-gb
Source: https://www.epa.gov/saferchoice
Biocide
Also called: Antimicrobial agent; pesticide
A biocide is any substance or mixture that destroys, deters, renders harmless, prevents the action of, or exerts a controlling effect on any harmful organism. In U.S. commercial cleaning, biocides used on surfaces — including disinfectants, sanitizers, sporicides, and preservatives — are regulated as pesticides under
FIFRA and require EPA registration before sale or distribution. The biocide classification encompasses a broader range than disinfectants alone: preservatives added to cleaning product formulations to prevent microbial degradation of the product itself are also biocides subject to FIFRA review. For BSCs, the practical implication is that any product making a "kills," "disinfects," or "sanitizes" claim on its label is a registered pesticide and must be used per the registered label. Using a biocide in a manner inconsistent with its label — including at the wrong dilution, on unapproved surfaces, or for claims not listed — is a federal violation under FIFRA section 12.
Related: Disinfectant, Sanitizer, FIFRA, Kill Claim, EPA Registration Number
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/laws-regulations/summary-federal-insecticide-fungicide-and-rodenticide-act
Sanitizer
Also called: Sanitizing agent
A sanitizer is an EPA-registered product that reduces bacterial populations on surfaces by a specified log-reduction percentage under
EPA FIFRA. For food-contact surfaces, EPA requires a 99.999% (5-log) reduction in Salmonella choleraesuis and Staphylococcus aureus populations within 30 seconds of contact. For non-food-contact surfaces, EPA applies a less stringent standard (99.9%, or 3-log reduction). The sanitizer designation is below the disinfectant standard — sanitizers are not required to kill fungi or viruses and do not carry sporicidal claims. BSCs must match the product classification to the specification: a food service facility requiring sanitized food-contact surfaces needs an EPA-registered food-contact sanitizer meeting FDA 21 CFR 178.1010 no-rinse standards, not simply any quat-based product. The distinction between sanitizer and disinfectant is frequently misapplied in cleaning scope documents and training materials.
Related: Disinfectant, Food-Contact Sanitizer, Kill Claim, Contact Time, EPA Registration Number
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/label-review-manual
Disinfectant
Also called: Disinfecting agent
A disinfectant is an EPA-registered product that destroys or irreversibly inactivates specific bacteria, viruses, and fungi on hard, non-porous surfaces at the labeled concentration and within the labeled contact time.
EPA pesticide registration requires validated efficacy data for each organism claimed on the label; the registration label specifies which organisms are covered, what surface types are approved, what dilution to use, and how long the product must remain wet. Disinfectants occupy the middle tier of antimicrobial efficacy — below sterilants (which kill all microbial life including endospores) and above sanitizers (which only reduce bacterial population by a defined percentage). For BSCs, using a disinfectant correctly means following the label exactly: the right dilution on the right surface type for the required contact time before wiping or allowing to air dry. Disinfecting a surface that carries visible soil without prior cleaning generally reduces efficacy because organic soil interferes with the active ingredient.
Related: Sanitizer, Sporicide, Kill Claim, Contact Time, EPA Registration Number
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration
Sterilant
Also called: Chemical sterilant; cold sterilant
A sterilant is a product capable of destroying all forms of microbial life, including bacterial endospores, mycobacteria, fungi, and viruses. It represents the highest level of antimicrobial efficacy — above disinfectants and sporicides in the regulatory hierarchy. Surface sterilants are regulated by
EPA under FIFRA; medical device sterilants are regulated by
FDA. Common chemical sterilants include glutaraldehyde, ortho-phthalaldehyde (OPA), peracetic acid, and high-concentration hydrogen peroxide. In commercial cleaning operations, BSCs very rarely work with sterilants; they are primarily used in healthcare instrument reprocessing. The relevance to BSCs is in scope boundary definition — facility cleaning and disinfection is not sterilization, and any client specification claiming to require "sterile" floor or surface conditions is almost certainly using the term informally to mean high-level disinfection.
Related: Sporicide, Disinfectant, Sanitizer, Kill Claim, Hospital-Grade Disinfectant
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration
Virucide
Also called: Virucidal agent
A virucide is a disinfectant product with EPA-registered kill claims against specific viruses. Under
FIFRA efficacy data requirements, a product must provide validated test data demonstrating virus inactivation at the labeled concentration and contact time to carry a virucidal claim. EPA classifies viruses by relative difficulty-to-kill: non-enveloped viruses (norovirus, poliovirus, adenovirus) are harder to inactivate than enveloped viruses (SARS-CoV-2, influenza). A product claiming efficacy against a harder-to-kill non-enveloped virus is generally presumed effective against easier-to-kill enveloped viruses at the same concentration and contact time. BSCs should verify that products specified for healthcare or school accounts carry claims against the specific viruses relevant to those environments — norovirus claims require validation against poliovirus or norovirus surrogate, not simply any enveloped virus.
Related: Disinfectant, Kill Claim, Contact Time, EPA Registration Number, EPA List N
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/efficacy-data-antimicrobial-pesticides
Bactericide
Also called: Bactericidal agent
A bactericide is a product that kills bacteria, as distinguished from bacteriostatic agents that only inhibit bacterial growth without killing cells. Under
EPA efficacy data standards, bactericidal claims require validated kill data against specific reference organisms (Staphylococcus aureus, Salmonella choleraesuis, and Pseudomonas aeruginosa are the three standard organisms for hospital-grade disinfectant claims). The scope of bactericidal efficacy varies significantly by product — a product claiming to kill Staphylococcus aureus does not automatically kill Mycobacterium tuberculosis or MRSA without separate validated data and label registration for those organisms. For BSCs, the distinction between killing bacteria and inhibiting their growth matters in healthcare settings, where bactericidal products are required for surface disinfection protocols following HICPAC guidelines. A bacteriostatic product — even if labeled as an "antimicrobial" cleaner — does not satisfy a disinfection specification.
Related: Disinfectant, Kill Claim, Hospital-Grade Disinfectant, Contact Time, Sanitizer
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/efficacy-data-antimicrobial-pesticides
Fungicide
Also called: Antifungal agent
A fungicide is an EPA-registered product with efficacy claims against fungi, molds, or mildew on surfaces. Under
FIFRA, fungicidal claims require validated test data against reference fungi at the labeled concentration and contact time. Common active ingredients with antifungal activity in janitorial products include sodium hypochlorite, quaternary ammonium compounds, and hydrogen peroxide. Mold remediation in buildings involves more than surface-level fungicidal treatment; the IICRC S520 standard governs remediation scope and containment procedures, and surface treatment with a registered fungicide is only one component of a complete remediation protocol. For BSCs, fungicide claims are relevant in restroom grout maintenance, shower and locker room cleaning, and HVAC diffuser service in humid climates. Mold growth on a surface signals a moisture problem that requires corrective action beyond chemical treatment; BSCs should document and communicate this to facility management.
Related: Disinfectant, Sporicide, Sodium Hypochlorite, Kill Claim, Biofilm
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration
Sporicide
Also called: Sporicidal agent
A sporicide is an EPA-registered product capable of killing bacterial endospores — the most chemically resistant form of microbial life.
EPA efficacy data requirements mandate validated kill data against standardized spore preparations (typically Bacillus subtilis or Clostridium difficile spores) at the labeled concentration and contact time. The contact times for sporicidal claims are often substantially longer (10–30 minutes) than for standard disinfection, which creates operational challenges in BSC programs. Clostridioides difficile (C. diff) sporicide claims are the most commonly specified sporicidal requirement in healthcare environmental services. Sodium hypochlorite at 5,000 ppm or above is the most widely available EPA-registered sporicide in commercial cleaning. BSCs serving hospitals, long-term care, and ambulatory care facilities with C. diff outbreak protocols must verify that the disinfectant used in those areas carries a C. diff sporicidal claim at the concentration actually applied — not the labeled concentrate concentration.
Related: Disinfectant, Kill Claim, Contact Time, Sodium Hypochlorite, HICPAC
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/efficacy-data-antimicrobial-pesticides
Dwell Time
Also called: Contact time (near-synonym)
Dwell time is the field-common term for what EPA's label language calls contact time — the period during which a disinfectant solution must remain visibly wet on a surface before wiping or air drying to achieve the labeled efficacy claim. While the terms are used interchangeably in BSC operations, there is a subtle distinction in precision: "contact time" is the regulatory term that appears on EPA-registered labels and carries legal weight under
FIFRA; "dwell time" is the field and training term. In practice, both refer to the same operational requirement. BSCs should note that "dwell time" does not include a post-application waiting period after the surface is dry — once the surface dries, the kill clock stops regardless of how long the product remains applied. Disinfectant formulations with humectants (moisture-retaining additives) can extend effective dwell by slowing evaporation, a relevant consideration for high-airflow environments where surfaces dry rapidly.
Related: Contact Time, Kill Claim, Disinfectant, Quaternary Ammonium Compound, Sporicide
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/label-review-manual
Kill Claim
Also called: Efficacy claim
A kill claim is an EPA-reviewed and approved statement on a disinfectant label specifying which organisms the product kills, at what concentration, and within what contact time under defined test conditions. Kill claims are substantiated by
EPA-accepted efficacy data — standardized laboratory tests conducted by an EPA-approved testing laboratory — before the claim can appear on a registered label. The claim is tied to the specific formulation at the specific registered concentration: a reformulated product or a different dilution ratio requires new efficacy data submission. For BSCs, kill claims are the primary basis for product selection in healthcare, food service, and institutional accounts with pathogen-specific specifications. The authoritative source for a product's kill claims is the current EPA-registered label, accessible through EPA's Pesticide Product Label System using the product's EPA Registration Number. Marketing documents and sell sheets are not authoritative sources for kill claims.
Related: EPA Registration Number, Contact Time, Disinfectant, Sporicide, FIFRA
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/pesticide-registration/efficacy-data-antimicrobial-pesticides
Hospital-Grade Disinfectant
Also called: Institutional disinfectant
Hospital-grade disinfectant is an industry term — not an EPA regulatory classification — for disinfectant products with EPA-registered kill claims against the three reference organisms that EPA historically required for use in hospitals: Staphylococcus aureus, Salmonella choleraesuis, and Pseudomonas aeruginosa.
EPA Label Review Manual governs which claims can appear on labels; "hospital-grade" is not a defined EPA category but has become the standard shorthand in the janitorial industry for any disinfectant with these three reference kill claims. Importantly, hospital-grade designation does not guarantee sporicidal efficacy (required for C. diff protocols), virucidal efficacy (required for norovirus or influenza), or tuberculocidal efficacy (required in specific healthcare-area cleaning). BSCs should read the full kill claim list on the EPA-registered label rather than relying on the "hospital-grade" designation alone when specifying products for regulated healthcare environments.
Related: Disinfectant, Kill Claim, Sporicide, Quaternary Ammonium Compound, HICPAC
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.epa.gov/pesticide-registration/label-review-manual
NSF International
Also called: NSF
NSF International is an independent testing, certification, and standards development organization with particular authority in food safety and public health applications. In janitorial chemistry, NSF is most relevant through NSF/ANSI 2 (food equipment standards, including material and chemical compatibility) and through NSF's registration of cleaning and sanitizing compounds for use in food processing and food service environments.
NSF food safety certifications verify that products meet regulatory requirements for use in federally inspected facilities and food-contact applications. For BSCs serving food processing plants, commercial kitchens, or food distribution facilities, NSF registration of a sanitizer or cleaner provides documented compliance with FDA and USDA expectations for those environments. NSF maintains a publicly searchable database of registered products, which BSCs can use to verify compliance status for purchasing decisions.
Related: Food-Contact Sanitizer, FDA (food-contact surfaces), HACCP, USDA Approval, Sanitizer
See also: /resources/facility-playbooks/bloodborne-pathogens-cleanup
Source: https://www.nsf.org/services/by-type/certifications/food-safety-certifications
GHS Pictogram
Also called: Hazard pictogram; GHS symbol
GHS pictograms are nine standardized graphical symbols established by the United Nations Globally Harmonized System of Classification and Labelling of Chemicals and adopted in the U.S. through
OSHA's Hazard Communication Standard. Each pictogram uses a bold red diamond border enclosing a black hazard symbol: examples include the flame (flammable), skull-and-crossbones (acute toxicity), exclamation mark (skin/eye irritant), health hazard diamond (carcinogen/sensitizer), and corrosion symbol (skin or metal corrosion). OSHA requires that all chemical labels include applicable GHS pictograms, and that workers be trained to identify and respond to them under 29 CFR 1910.1200. For BSCs, GHS pictogram training is a required component of the Hazard Communication program for every employee who works with or near labeled chemicals. The 2024 HazCom update (HCS 2024) aligns OSHA requirements with GHS Revision 7, adding new hazard classes and pictogram applications with employer compliance deadlines extending through January 2026.
Related: Safety Data Sheet, GHS, Hazard Statement, Signal Word, HazCom 2024
See also: /resources/workforce-labor/bloodborne-pathogens-cleanup
Source: https://www.osha.gov/hazcom/pictograms
Safety Data Sheet (SDS)
OSHA's most-cited standard in the building services sector — year after year — is 29 CFR 1910.1200, the Hazard Communication Standard. And the most common sub-citation within it is a missing or inaccessible Safety Data Sheet (SDS).
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Signal Word
Also called: Danger; Warning
Signal words are required GHS label elements — either "Danger" or "Warning" — placed prominently on EPA-registered pesticide and OSHA-regulated chemical labels to indicate the severity of the hazard category. "Danger" indicates a more severe hazard (high acute toxicity, skin corrosion, flammable gas); "Warning" indicates a less severe hazard.
OSHA HCS and EPA pesticide labeling regulations both require signal words on applicable products, and both align with GHS classification criteria. A single product may have a GHS signal word and an EPA pesticide signal word (which on older EPA labels also included "Caution" as a third tier — a legacy pesticide signal word not used in GHS). For BSC training programs, employees must learn to locate the signal word on a chemical label before first use, identify what it means in terms of hazard level, and understand the associated PPE and handling precautions specified in the SDS.
Related: GHS Pictogram, Hazard Statement, Safety Data Sheet, OSHA Hazard Communication Standard, HazCom 2024
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.osha.gov/hazcom
Hazard Statement
Also called: H-statement
Hazard statements are standardized GHS phrases assigned to chemical products that describe the nature and degree of each hazard. They are designated by H-codes assigned under
OSHA 29 CFR 1910.1200 Appendix C. Example H-statements include H315 ("Causes skin irritation"), H318 ("Causes serious eye damage"), and H334 ("May cause allergy or asthma symptoms or breathing difficulties if inhaled"). H-statements appear on chemical labels and in SDS Section 2. They are not negotiable or editable by the supplier — each H-code maps to a fixed phrase in the GHS system. For BSCs, hazard statements on the SDS are the basis for PPE selection (cross-referenced against SDS Section 8) and for employee training on chemical hazards. The 2024 HCS update (HCS 2024, aligned with GHS Revision 7) added new H-codes for desensitized explosives, non-flammable aerosols, and other new hazard classes; product SDSs will be updated on a phased schedule through January 2026.
Related: Signal Word, Precautionary Statement, GHS Pictogram, Safety Data Sheet, HazCom 2024
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1200AppC
Precautionary Statement
Also called: P-statement
Precautionary statements are standardized GHS phrases recommending measures to minimize or prevent adverse effects from chemical exposure, assigned P-codes under
OSHA 29 CFR 1910.1200 Appendix D. P-statements address four categories: prevention (P201–P285), response (P301–P391), storage (P401–P422), and disposal (P501). Example P-statements include P260 ("Do not breathe dust/fume/gas/mist/vapors/spray"), P280 ("Wear protective gloves/protective clothing/eye protection"), and P310 ("Immediately call a POISON CENTER or doctor"). P-statements appear on chemical labels and SDS Section 2 alongside H-statements. They are the direct basis for BSC safety training content on each product — what PPE to wear, how to store the product, and what to do in case of an emergency. The HCS 2024 update added new P-statements corresponding to the new hazard classes introduced in GHS Revision 7.
Related: Hazard Statement, Signal Word, GHS Pictogram, Safety Data Sheet, Personal Protective Equipment
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1200AppD
FIFRA
Also called: Federal Insecticide, Fungicide, and Rodenticide Act
FIFRA is the federal statute requiring EPA registration of all pesticides — including disinfectants, sanitizers, and antimicrobial agents — before they can be sold or distributed in the U.S. Under
FIFRA, the EPA reviews efficacy data, toxicological data, and label language before granting registration. The product label is a legal document; using a FIFRA-registered product in a manner inconsistent with its label — wrong dilution, unapproved surfaces, or claims not supported by registration — constitutes a federal violation. FIFRA section 2(ee) specifically prohibits certain uses inconsistent with the label. For BSCs, FIFRA compliance means: verifying EPA Registration Numbers on all disinfectant products, applying products at labeled dilutions, respecting contact time requirements, and ensuring that employees understand that the label is not a suggestion. State pesticide regulations may add requirements on top of FIFRA.
Related: EPA Registration Number, Kill Claim, TSCA, Biocide, Safety Data Sheet
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/laws-regulations/summary-federal-insecticide-fungicide-and-rodenticide-act
TSCA
Also called: Toxic Substances Control Act
TSCA is the federal statute, administered by EPA, governing the manufacture, import, processing, distribution, use, and disposal of chemical substances in the U.S. Unlike FIFRA (which covers pesticides),
TSCA applies to industrial chemicals that are not pesticides or pharmaceuticals. In commercial cleaning, TSCA is primarily relevant to ingredient transparency and PFAS regulation. EPA's 2016 TSCA reform (Frank R. Lautenberg Chemical Safety for the 21st Century Act) gave EPA authority to require chemical manufacturers to report and evaluate existing chemicals. TSCA's PFAS reporting rule (effective July 2027) will require manufacturers and importers to report historical PFAS manufacture and use. For BSCs, TSCA's direct operational impact is in chemical inventory compliance and in tracking PFAS-containing products: TSCA-based PFAS restrictions at the federal level are anticipated to affect cleaning product formulations in coming years alongside existing state-level bans.
Related: PFAS, FIFRA, VOC, EPA Safer Choice, Safety Data Sheet
See also: /resources/sustainability-iaq/pfas-state-by-state-2026
Source: https://www.epa.gov/laws-regulations/summary-toxic-substances-control-act
PFAS
Also called: Per- and polyfluoroalkyl substances; forever chemicals
PFAS are a class of thousands of synthetic fluorinated compounds characterized by carbon-fluorine bonds that are among the strongest in chemistry, making PFAS highly persistent in the environment and in biological tissues — hence the "forever chemicals" label. In cleaning products, PFAS have historically appeared as surfactants (for wetting, leveling, and foam control), as stain repellents in floor finishes and carpet treatments, and in aqueous film-forming foams (AFFF).
EPA's PFAS Strategic Roadmap signals ongoing federal restriction activity. State-level bans in cleaning products are accelerating: Minnesota's Amara's Law banned PFAS in cleaning products effective January 2025; Maine and Colorado bans take effect January 2026. BSCs operating in regulated states must audit their chemical programs for PFAS-containing products before state effective dates and substitute compliant alternatives. The EPA's PFAS National Primary Drinking Water Rule (effective 2029) addresses water contamination separately and does not regulate product formulations directly.
Related: TSCA, VOC, EPA Safer Choice, Safety Data Sheet, FIFRA
See also: /resources/sustainability-iaq/pfas-state-by-state-2026
Source: https://www.epa.gov/pfas
VOC
Also called: Volatile Organic Compound
Volatile organic compounds are carbon-containing compounds that evaporate at room temperature and participate in atmospheric photochemical reactions that contribute to ground-level ozone formation. In cleaning products, VOC sources include solvents, fragrance components, and certain surfactants.
EPA National VOC Emission Standards establish category-specific weight-percentage limits for consumer and commercial cleaning products. California CARB Regulation 94658 and the Ozone Transport Commission (OTC) state rules are generally more stringent than federal standards. Inside buildings, high-VOC cleaning products contribute to elevated total volatile organic compound (TVOC) concentrations affecting indoor air quality, a compliance issue under WELL v2 and Fitwel specifications. BSCs must verify VOC content (disclosed in SDS Panel 9) for products used on LEED, WELL, or Fitwel-certified accounts and in California or OTC states.
Related: Solvent Cleaner, PFAS, EPA Safer Choice, ASHRAE 62.1, WELL v2
See also: /resources/sustainability-iaq/leed-v5-well-v2-fitwel-cleaning
Source: https://www.epa.gov/indoor-air-quality-iaq/volatile-organic-compounds-impact-indoor-air-quality
Ozone-Based Cleaning
Also called: Ozone; activated water
Ozone-based cleaning uses dissolved ozone gas (O₃) as an oxidizing cleaning or disinfecting agent. Ozone in water attacks organic compounds and microbial cell walls through oxidation and reverts to oxygen after reacting, leaving no chemical residue.
EPA considers ozone a disinfectant in drinking water treatment where it has well-validated efficacy data; surface disinfection efficacy against regulated pathogens via ozone-generating devices varies by system and has not been uniformly validated through EPA FIFRA registration pathways. Equipment that generates ozonated water for cleaning purposes may not carry EPA-registered disinfectant claims against specific pathogens. BSCs evaluating ozone-based systems for use in accounts requiring documented kill claims against specified organisms must verify whether the specific device carries EPA registration for those surface disinfection claims, or whether its use is limited to soil removal without a regulatory kill claim. Ambient ozone concentrations must remain within OSHA permissible exposure limits (0.1 ppm TWA) in occupied spaces.
Related: VOC, EPA Registration Number, Kill Claim, ASHRAE 241, Safety Data Sheet
See also: /resources/equipment-technology/ai-iot-electrostatic-2026
Source: https://www.epa.gov/ground-water-and-drinking-water/ozone-disinfection
Enzymatic Drain Treatment
Also called: Bio-drain maintainer
Enzymatic drain treatments are enzymatic or bacterial formulations applied to drain systems to biodegrade organic buildup — soap scum, grease, hair, and urine scale — and suppress the odor-generating bacteria that colonize drain biofilms. Unlike caustic drain openers (sodium hydroxide or sulfuric acid), enzymatic treatments break down organic material through biological action without corroding pipe materials or generating heat.
EPA Safer Choice has approved enzyme and bacterial formulations used in drain treatment applications. For BSCs, enzymatic drain treatment is typically included in restroom service programs as a scheduled maintenance step — dosed into floor drains and urinal traps at each service visit or on a weekly cycle. The biological mechanism requires residual moisture and organic substrate to sustain activity; treatments applied to dry or freshly disinfected drains with residual quat may have reduced efficacy because quats can inhibit bacterial cultures in bio-enzymatic products.
Related: Enzymatic Cleaner, Biofilm, Odor Counteractant, Quaternary Ammonium Compound, pH
See also: /resources/facility-playbooks/restroom-service-frequency-benchmarks
Source: https://www.epa.gov/saferchoice/safer-ingredients
Concentration (active ingredient)
Also called: Active concentration; a.i. %
Active ingredient concentration is the percentage by weight of the antimicrobial or cleaning-active ingredient in a formulation, as stated on the product label. For EPA-registered disinfectants, the active ingredient percentage on the label corresponds to the registered concentration; diluting below that level, or using a product with a degraded active ingredient, may invalidate the kill claim.
EPA Label Review Manual Chapter 5 governs ingredient statement requirements on pesticide labels. Concentration degrades over time due to heat, light exposure, and age — particularly for chlorine-based products. For BSCs, tracking concentration through the supply chain matters: sodium hypochlorite at 8.25% concentration from a manufacturer may arrive at a distributor warehouse months later at 5–6% due to degradation, which shifts its effective use dilution and changes the concentration at which it achieves its registered kill claims.
Related: Dilution Ratio, Kill Claim, Sodium Hypochlorite, Safety Data Sheet, FIFRA
See also: /resources/product-guides/cleaning-chemical-inventory-management
Source: https://www.epa.gov/pesticide-registration/label-review-manual
Color-Coded Chemical System
Also called: Dilution control system
A color-coded chemical system assigns a specific color-coded label, dispenser, and often a dedicated spray bottle color to each chemical product category in a BSC's cleaning program. The purpose is to prevent cross-contamination and misuse in multi-product programs — particularly where incompatible chemicals (acid and bleach, for example) must be stored and used at the same site. Color coding also supports contamination control in the
color-coded cleaning system for cloths and mops (restroom = red, general surface = green or yellow). Major dilution control system manufacturers integrate color coding at the dispenser level, with colored dilution ports corresponding to colored product containers. For BSCs, implementing a documented color-coded chemical system is a training and quality management measure that reduces chemical handling errors, simplifies SDS compliance (each color maps to one SDS), and supports CIMS and GBAC STAR program documentation requirements.
ISSA cleaning standards reference color-coded systems in custodial best practices guidance.
Related: Safety Data Sheet, Concentrate, Dilution Ratio, CIMS, GBAC STAR Service Accreditation
See also: /resources/facility-playbooks/color-coded-cleaning-system
Source: https://www.issa.com/standards-certification
