[Home](/)/[Resources](/resources)/FHSA Labeling United StatesCPSCProduct SafetyLabeling # Federal Hazardous Substances Act (FHSA): Labeling and Toxicity Requirements for Consumer Products The FHSA (15 USC § 1261 et seq.), administered by the CPSC, governs hazardous substances in household consumer products. Electronics companies selling cleaning kits, battery-powered devices, or children's accessories in the US must assess every product against FHSA's toxicity thresholds — and label correctly before the product ships. Copy Link[Share on WhatsApp](https://wa.me/?text=https%3A%2F%2Fkrono-labs.com%2Fguides%2Fus-federal-hazardous-substances-act) At a glance Administering agency CPSC Signal words DANGER / WARNING / CAUTION Key statute 15 USC § 1261 et seq. Penalty authority 15 USC § 1267 — injunction + seizure ## Key FHSA concepts for electronics manufacturers ### FHSA Hazardous Substance Definition Under 15 USC § 1261(f), a hazardous substance is any substance that is toxic, corrosive, flammable or combustible, radioactive, an irritant, or a strong sensitizer — and whose use may cause substantial personal injury or illness. Electronics products routinely trigger this definition through lithium battery electrolyte (toxic, flammable), aerosol conformal coatings (flammable), cleaning solvents, and flux residue. ### Six Mandatory FHSA Label Elements FHSA § 1261(p) and 16 CFR § 1500.121 require: (1) the signal word DANGER, WARNING, or CAUTION; (2) statement of the principal hazard (e.g., 'Flammable — keep away from fire or flame'); (3) precautionary measures; (4) first-aid instructions; (5) 'Keep out of reach of children' if a children's article; and (6) the name and place of business of the manufacturer, packer, distributor, or seller. ### Signal Word Hierarchy DANGER is required for substances with the highest hazard severity — including substances that are highly toxic (LD50 ≤ 50 mg/kg oral) or extremely flammable (flash point below 20°F). WARNING applies to moderately toxic or flammable substances. CAUTION covers the lowest tier. Misclassifying a DANGER substance as WARNING is itself an FHSA violation, independent of any underlying injury. ### Banned Hazardous Substances Under 16 CFR Part 1500.17 Certain specific formulations are outright banned from sale — not merely subject to labeling — including extremely flammable contact adhesives, carbon tetrachloride products, and various toys and articles intended for children containing banned substances. A banned substance cannot be brought into compliance through labeling; it must be reformulated or withdrawn. ### FHSA Children's Article Provisions — § 1261(q)(1) Any toy or other article intended for use by children that presents an electrical, mechanical, or thermal hazard is a 'banned hazardous substance' under FHSA § 1261(q)(1). The 'suitable for children' advertising trap is real: marketing a product with images of children or language like 'ages 6+' can pull an otherwise adult-market product into the children's article category — with potentially zero tolerance for certain hazard types. ### CPSIA and FHSA Simultaneous Application For children's products, both FHSA and CPSIA (15 USC § 2051 et seq.) apply independently. CPSIA imposes lead content limits (100 ppm in substrate, 90 ppm in surface coating), phthalate restrictions, and third-party testing with a Children's Product Certificate (CPC). Satisfying CPSIA does not satisfy FHSA labeling obligations, and vice versa. A single non-compliant children's electronic toy can draw enforcement under both statutes simultaneously. ## FHSA compliance process: from hazard assessment to shelf 01 Assess the product for FHSA hazardous substance status by applying LD50/LC50 toxicity thresholds and flammability criteria set out in 16 CFR § 1500.3. For electronics: evaluate lithium battery electrolyte, cleaning solvents, aerosol coatings, and any consumable chemical component. 02 If the product qualifies as a hazardous substance, identify the specific hazard type — toxic, corrosive, flammable/combustible, irritant, strong sensitizer, or radioactive — since the hazard type drives both the signal word and the precautionary statement language. 03 Check the product against 16 CFR Part 1500.17 banned substances list. If any component matches a banned formulation, the product cannot be sold in that form regardless of labeling — reformulation or component substitution is required. 04 Determine whether the product is intended for children. Review product descriptions, marketing materials, imagery, packaging, and retailer categorization. Any indicator that the product targets or is suitable for children under 14 can trigger the children's article classification under FHSA and simultaneously invoke CPSIA requirements. 05 Prepare the FHSA-compliant label incorporating all six mandatory elements: signal word, principal hazard statement, precautionary measures, first-aid instructions, 'Keep out of reach of children' if applicable, and manufacturer/distributor name and address. Verify label prominence and legibility requirements under 16 CFR § 1500.121(c). 06 Review all advertising copy, Amazon listings, retail packaging inserts, and social media content to eliminate language or imagery that could unintentionally trigger children's article classification for adult-market products. 07 Maintain labeling documentation through the full product lifecycle — label revisions, formulation changes, or new use claims each require a fresh FHSA hazard assessment. If a product is reformulated, the assessment starts over. 08 Brief importers, distributors, and private-label partners in writing that FHSA labeling obligations run with the product into US commerce regardless of where manufacturing occurs. Under 15 USC § 1267, CPSC can seek injunctive relief and seizure against any party in the distribution chain. ## Frequently asked questions ### Which electronics products trigger FHSA labeling requirements? Any electronics product containing a hazardous substance accessible to the user during normal use or foreseeable misuse can trigger FHSA. Common examples include products with lithium battery electrolyte exposed in a damaged or defective cell (toxic and flammable), aerosol conformal coating sprays (flammable, irritant), lead-bearing solder accessible on repair-intended products, and cleaning kits with solvent-based compounds. If a product's labeling or marketing implies it will be used for cleaning, the solvent in the kit is almost certainly subject to FHSA assessment. ### What's the difference between DANGER, WARNING, and CAUTION signal words under FHSA? The signal word reflects hazard severity as defined in 16 CFR § 1500.121(b). DANGER is reserved for the most severe hazards: highly toxic substances (oral LD50 ≤ 50 mg/kg rat), extremely flammable materials (flash point below 20°F/-7°C), or strong corrosives. WARNING is used for moderately toxic or flammable substances and most irritants. CAUTION applies to the lowest tier of toxicity or irritancy. Selecting the wrong signal word — particularly using WARNING for a DANGER-tier substance — is itself a prohibited act under FHSA § 1264. ### Does FHSA apply to B2B-sold electronics components? FHSA applies to hazardous substances sold for household use or that are intended or packaged for sale to retail customers. Pure industrial or B2B-only supply chains — where a component is sold directly to an OEM manufacturer and never reaches a retail consumer — generally fall outside FHSA's scope, though OSHA Hazard Communication Standard (29 CFR § 1910.1200) and GHS-compliant Safety Data Sheets (SDSs) would apply to those commercial transactions instead. The risk area is dual-channel products sold both B2B and at retail. ### Can a product trigger both FHSA and CPSIA requirements? Yes — and this is one of the more consequential overlaps in US consumer product law. A children's electronic toy that contains a hazardous substance must comply with FHSA labeling (or, if a banned hazardous substance under § 1261(q)(1), cannot be sold at all), while simultaneously meeting CPSIA's lead content limits (100 ppm total lead in substrate), third-party testing obligations, and Children's Product Certificate requirements. Compliance with one statute provides no safe harbor under the other. CPSC enforces both and can issue parallel civil penalty notices for violations of each. **Disclaimer:** Educational resource only. Regulatory requirements change. Consult a licensed US attorney or compliance specialist before making decisions. 🇺🇸 US roadmap for your product Every standard, document, and test that applies — free, no account required. See your free roadmap Learn this properly In-depth course that teaches the full process, not just this one answer. [Start the course — $149](/courses/29-cpsc-mandatory-efiling-consumer-electronics-importers)[Prefer to read? 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