CAS 71-36-3 · TSCA · United States of America

n-Butanol (butan-1-ol) under TSCA

C4H10O · 正丁醇

Status: Listed. n-Butanol is on the TSCA Inventory and currently listed as TSCA Active. **OSHA PEL 100 ppm 8-hr TWA** at 29 CFR 1910.1000 Table Z-1 (no OSHA skin designation per https://www.osha.gov/annotated-pels; NIOSH carries a separate Ceiling 50 ppm with skin notation). NOT on EPA RMP threshold list. NOT on DEA scheduling. NOT on California Proposition 65 (verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying on negative listing). **TRI Section 313 listed**: Form R annual reporting required where site exceeds thresholds. NO active US AD/CVD case on Chinese-origin n-butanol currently (verify against https://access.trade.gov/ before invoicing; historical China-origin AD/CVD petitions exist, verify any prevailing cash-deposit rate at the case-number level). Section 301 List 3 25% additional duty applies on Chinese-origin n-butanol (HS 290513). Major US domestic producers (verify each company-site pair against the producer's public website before relying): Dow Chemical multi-site, Eastman Chemical Kingsport Tennessee, BASF Texas City Texas, OQ Chemicals (formerly Oxea / Oxiteno).

US n-butanol lane: **OSHA PEL 100 ppm 8-hr TWA (no OSHA skin) + NIOSH Ceiling 50 ppm [skin] + TRI Form R + Section 301 + NFPA 30**. NOT on Cal Prop 65. NO active US AD/CVD case currently (historical China-origin petitions exist; verify case-number cash-deposit rate at https://access.trade.gov/ before invoicing). Major US producers: Dow Chemical, Eastman Chemical, BASF Texas City Texas, OQ Chemicals.

Listing and threshold

Substance n-Butanol (butan-1-ol) (CAS 71-36-3), C4H10O
Regime US Toxic Substances Control Act (TSCA), administered by EPA
Jurisdiction United States of America
Status Listed
Tonnage threshold CDR threshold: 25,000 lb manufactured or imported per site per year

Classifications under this regime

  • OSHA HCS: GHS H226 / H302 / H315 / H318 / H335 / H336
  • OSHA PEL 29 CFR 1910.1000 Table Z-1: 100 ppm 8-hr TWA, NO OSHA skin designation (per https://www.osha.gov/annotated-pels)
  • NIOSH REL: Ceiling 50 ppm (150 mg/m3) with [skin] notation (per https://www.cdc.gov/niosh/npg/npgd0076.html)
  • NOT subject to TSCA Section 6 Risk Evaluation
  • NOT on EPA RMP threshold list
  • NOT on DEA List I or List II
  • NOT on California Proposition 65 list (verify against OEHHA before relying on negative listing)
  • **TRI Section 313 listed**: Form R annual reporting required for facilities above thresholds
  • DOT 49 CFR 172.101: UN 1120, Class 3, PG III
  • IARC: not separately classified (no Monograph covers n-butanol; verify against https://monographs.iarc.who.int/list-of-classifications)

Restrictions and conditions of use

  • OSHA-compliant SDS and workplace HazCom training required
  • NO active US AD/CVD case on Chinese-origin n-butanol currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin n-butanol (HS 290513)
  • **TRI Form R annual reporting** for facilities above thresholds
  • NFPA 30 Flammable and Combustible Liquids Code applies for storage

Importer obligations

TSCA self-certification regime. Major US producers: Dow Chemical multi-site, Eastman Chemical Kingsport Tennessee, BASF Texas City Texas, OQ Chemicals (formerly Oxea / Oxiteno).

Required documents

  • TSCA Section 13 Import Certification on customs entry
  • OSHA SDS reflecting H226 / H302 / H315 / H318 / H335 / H336
  • CBP Form 7501 with HS 290513 + Section 301 List 3 25% duty
  • TRI Form R annual report
  • CDR filing every 4 years
  • NFPA 30 storage tank documentation

Common compliance traps

The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.

  • OSHA PEL 100 ppm 8-hr TWA (no OSHA skin designation; NIOSH Ceiling 50 ppm carries the skin notation)
  • TRI Form R annual reporting
  • NO active US AD/CVD case currently (historical China-origin petitions; verify case-number cash-deposit rate at https://access.trade.gov/ before invoicing)
  • Section 301 List 3 25% additional duty applies
  • Major US producers: Dow Chemical multi-site, Eastman Chemical Kingsport Tennessee, BASF Texas City Texas, OQ Chemicals

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for n-butanol (butan-1-ol), see the CAS 71-36-3 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the n-butanol (butan-1-ol) cornerstone hub covers the full sourcing chain.

For the structure and history of TSCA, see the TSCA glossary entry.

Need cross-jurisdiction compliance support on this substance? Run it through the REACH / TSCA / IECSC / AICIS / K-REACH checker, or send us the substance and the destination and we will quote FOB China and CIF / DDP landed including the regulatory work on the destination side.

Read next

Cross-jurisdiction profile and sourcing references

Referenced in

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