Federal Hazardous Substances Act rules for household labels
The Federal Hazardous Substances Act requires warnings on hazardous household products and bans certain articles. Check scope, labels and exceptions.
The Federal Hazardous Substances Act (FHSA) requires cautionary labels on hazardous substances intended, or packaged in a form suitable, for household use or use by children. It also bans certain household products and children's articles, so a warning can't make every hazardous product lawful. The Consumer Product Safety Commission (CPSC) administers the law through regulations including 16 CFR Part 1500.
For manufacturers and importers, the first task is to assess the product's hazards and foreseeable use. An ingredient list alone does not settle whether a product needs warnings or falls under a ban. The definitions in 16 CFR 1500.3 connect the hazard to the potential for substantial injury or illness.
What counts as a hazardous substance?
The core substance-or-mixture test has two parts. The product must be toxic, corrosive, an irritant, a strong sensitizer, flammable or combustible, or generate pressure. It must also have the potential to cause substantial personal injury or illness during, or as a proximate result of, customary or reasonably foreseeable handling or use, including reasonably foreseeable ingestion by children. Both parts come from section 1500.3(b)(4).
Use the FHSA definitions when assessing those characteristics. Corrosivity concerns destruction or irreversible alteration of living tissue, rather than corrosion of metal. A strong-sensitizer finding requires Commission designation, and those designations have concentration conditions. Formaldehyde products at 1% or more, and bergamot-oil products at 2% or more, are examples under section 1500.13. An OSHA sensitization classification alone doesn't establish FHSA strong-sensitizer status. The substantial-injury test still applies. Corrosivity and the designation requirement are in section 1500.3.
Choose the test that fits the hazard and product form. For example, 16 CFR 1500.44 tests extremely flammable and flammable solids. It's not a universal test for every household chemical or hazard.
Household use extends beyond the kitchen
Garages, barns and storage sheds fall within the household-use definition. A professional product sold at retail for nonprofessional use can qualify. But a product labeled and marketed solely for industrial use doesn't become a household product merely because a worker might take it home. Check section 1500.3(c)(10) against the actual marketing and intended use.
Container size doesn't decide it.
Some products fall outside the statutory definition. These include FIFRA pesticides, foods, drugs and cosmetics covered by the FD&C Act, and tobacco and tobacco products. The statute also excludes specified Atomic Energy Act materials and specifically described household heating, cooking and refrigeration fuels. These are boundaries between laws, not exemptions from all safety duties. An article that is not itself a pesticide can still be covered if it is hazardous because it bears or contains one. See 15 USC 1261(f).
FHSA cautionary labeling requirements
Subject to exemptions and special rules, the label must identify the responsible business and the components that contribute substantially to the hazard. It must also explain the hazard and how to avoid it. Section 1500.3(b)(14) sets out the required information:
- Business name and address.
- Common, usual or appropriate chemical names of hazard-contributing components.
- The required signal word and affirmative statements of the principal hazards.
- Precautions to follow during handling or use.
- First-aid instructions when necessary or appropriate.
- Special handling and storage instructions where needed.
- A child-protection statement, or applicable protective directions for permitted children's articles.
Signal words depend on the hazard, not the label designer's preference:
| Hazard classification | Required wording |
|---|---|
| Extremely flammable, corrosive or highly toxic | DANGER |
| Other hazardous substances | WARNING or CAUTION |
| Highly toxic | Also POISON and the skull-and-crossbones |
The table follows section 1500.3(b)(14) and section 1500.121(b). For a highly toxic substance, POISON and the skull and crossbones are added to DANGER. POISON is not an ordinary replacement for DANGER. 16 CFR 1500.129 requires the word poison instead of any signal word for listed substances at the concentrations stated there.
Placement and packaging count too
On each principal display panel, block the signal word, the principal hazards and, where appropriate, a direction to read cautions placed elsewhere. That block sits in a square or rectangular area. All required cautionary statements may appear on the principal display panel. If some appear elsewhere, group them together on another display panel. The front panel must then tell the reader to read the other cautions on that panel, or use a practical equivalent. Business identity may appear separately. The wording must be in English, with conspicuous contrast, and type size depends on panel area. There is no single minimum font size, which is awkward on a small bottle. See section 1500.121(b)-(d).
Retail outer packaging must repeat warnings unless they remain clearly legible through it. Accompanying literature that gives use directions also needs cautionary labeling. Unpackaged articles need direct labeling where practicable, or the prescribed attached material. Check sections 1500.3(b)(12) and 1500.121(e)-(f) before approving the finished pack.
Product-specific wording can add another requirement. Ethylene glycol, and mixtures containing 10% or more by weight, require WARNING and "Harmful or fatal if swallowed." Retail charcoal for cooking or heating has prescribed carbon-monoxide warnings. Art materials have separate chronic-hazard review and labeling provisions. These are examples from section 1500.14, not a complete label template.
Banned hazardous substances and their exceptions
Section 1500.17 contains qualified household-product bans. Read the product description and exception together. A chemical name appearing in that section does not establish a ban on every use of that chemical.
These examples show why the conditions matter. Each row comes from 16 CFR 1500.17:
| Product or substance | Scope and essential qualification |
|---|---|
| Water-repellent mixtures | Extremely flammable mixtures intended primarily for interior masonry walls, floors and similar surfaces. Not all water repellents. |
| Carbon tetrachloride and mixtures containing it | Includes fire-extinguisher uses. Unavoidable manufacturing residues are excepted if reasonably foreseeable use does not produce atmospheric concentrations above 10 ppm. |
| Liquid drain cleaners | 10% or more by weight sodium and/or potassium hydroxide, unless special packaging meets the applicable Poison Prevention Packaging Act standard. |
| General-use asbestos garments | Banned for general use, except bona fide thermal-protection garments constructed so fibers do not become airborne during reasonably foreseeable use. |
| Metal-cored candlewicks and candles containing them | Applies to products manufactured or imported on or after October 15, 2003, unless the metal core has no more than 0.06% lead by weight and the shipping container carries the prescribed conformity labeling. |
Warnings can't cure a failure to meet an applicable ban's conditions. For the drain-cleaner example, check the special-packaging standard rather than treating a stronger warning as a substitute. For metal-cored wicks, the lead threshold and shipping-container labeling condition both apply under section 1500.17.
Lead paint needs a separate check. Do not copy the historical paint limits in section 1500.17 as today's rule. For covered paint and coatings, 16 CFR 1303.1 sets a 0.009% lead limit, effective August 14, 2009. That differs from the metal-candlewick threshold.
Children's articles need a separate assessment
A toy or other children's article that is itself hazardous, or contains an accessible hazardous substance, is banned, subject to regulatory exemptions. Adding a warning doesn't automatically permit sale. This rule appears in section 1500.3(b)(15).
Foreseeable ingestion of an adult-use household chemical is a different question from whether an article is intended for children. Likewise, do not apply the CPSA/CPSIA definition of children's products, primarily intended for children 12 or younger, to every FHSA provision. That separate definition is in 16 CFR 1200.2.
The small-parts ban in section 1500.18(a)(9) concerns toys and other articles for children under three years, with scope, exemptions and testing in 16 CFR Part 1501.
An SDS does not settle FHSA labeling
An OSHA/GHS classification or safety data sheet doesn't automatically determine the required household label. CPSC permits dual labeling if FHSA information remains grouped separately and GHS information does not contradict it. Check CPSC's cautionary-labeling FAQ when preparing a label for both markets.
Workplace duties need their own assessment. OSHA's exception for certain CPSC-regulated labels differs from its consumer-use exception to the whole Hazard Communication Standard. The latter depends on employer-demonstrated use and consumer-comparable exposure duration and frequency. Consumer branding alone does not remove workplace SDS or training duties. See 29 CFR 1910.1200(b).
Before approving a household product
- Establish intended users, marketing and foreseeable exposure.
- Assess the formulation and product form against FHSA hazard criteria.
- Check product-specific bans, exceptions and special-labeling provisions.
- Review applicable packaging requirements and the complete label layout.
- Check outer packaging and use instructions before release.
RegAffairs AI's answer on Federal Hazardous Substances Act requirements provides a starting point for source lookup. Check the current product-specific text before final approval: the general provisions in Part 1500 sit alongside separate rules for particular products and hazards.