CAS 123-86-4 · TSCA · United States of America

n-Butyl acetate under TSCA

C6H12O2 · 乙酸正丁酯

Status: Listed. n-Butyl acetate is on the TSCA Inventory as a grandfathered pre-1979 substance and is currently listed as TSCA Active. **OSHA PEL 150 ppm 8-hr TWA, 200 ppm STEL** at 29 CFR 1910.1000 Table Z-1 (verify against https://www.osha.gov/annotated-pels). 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). NOT on TRI Section 313 list. NO active US AD/CVD case on Chinese-origin n-butyl acetate currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin n-butyl acetate (HS 291533). FDA 21 CFR 175 plus 177 indirect food-additive applications (verify exact 21 CFR section against https://www.ecfr.gov/ before relying).

The US n-butyl acetate lane has the **lightest US-side regulatory profile in the dataset alongside ethyl acetate batch 23**: NOT on TRI, NOT on Cal Prop 65, NOT on DEA, NO active AD. Section 301 List 3 25% additional duty applies but is the only tariff-stack layer. OSHA PEL 150 ppm 8-hr TWA is moderate. Major US domestic producers: Celanese Pampa Texas, LyondellBasell Pasadena Texas, Eastman Chemical Kingsport Tennessee. US is structurally balanced for n-butyl acetate. **n-Butyl acetate distinguishing pattern in US lane**: lightest regulatory stack of any organic substance in dataset alongside ethyl acetate batch 23; structurally balanced US lane.

Listing and threshold

Substance n-Butyl acetate (CAS 123-86-4), C6H12O2
Regime US Toxic Substances Control Act (TSCA), administered by EPA
Jurisdiction United States of America
Status Listed
Tonnage threshold CDR (Chemical Data Reporting) threshold: 25,000 lb (11,340 kg) manufactured or imported per site per year

Classifications under this regime

  • OSHA Hazard Communication Standard (HCS): GHS H226 / H336
  • OSHA PEL 29 CFR 1910.1000 Table Z-1: 150 ppm 8-hr TWA for n-butyl acetate (verify against https://www.osha.gov/annotated-pels/table-z-1); the 200 ppm STEL is the non-binding ACGIH TLV-STEL, not an OSHA limit
  • NIOSH REL: 150 ppm 8-hr TWA, 200 ppm STEL (verify against https://www.cdc.gov/niosh/npg/)
  • NOT subject to TSCA Section 6 Risk Evaluation
  • NOT on TSCA Section 5(a)(2) Significant New Use Rule list
  • NOT on EPA RMP threshold list
  • NOT on DEA List I or List II
  • NOT on California Proposition 65 list (verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying on negative listing)
  • NOT on TRI Section 313 list
  • DOT hazardous materials regulation (49 CFR 172.101): UN 1123, Class 3, PG III
  • IARC: not classified
  • FDA 21 CFR 175 + 177 indirect food-additive applications

Restrictions and conditions of use

  • No TSCA-specific use restrictions for n-butyl acetate
  • OSHA-compliant SDS and workplace HazCom training required
  • NO active US AD/CVD case on Chinese-origin n-butyl acetate currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin n-butyl acetate (HS 291533)
  • NFPA 30 Flammable and Combustible Liquids Code applies for storage

Importer obligations

TSCA is a self-certification regime: importers attest at customs entry that the substance is on the TSCA Inventory. The dominant practitioner-facing layer for n-butyl acetate is **Section 301 List 3 25% additional duty + OSHA HazCom training + NFPA storage compliance**. NO active AD/CVD case. NOT on TRI, NOT on Cal Prop 65, NOT on DEA. **Lightest US-side regulatory profile in the dataset alongside ethyl acetate batch 23**. Major US domestic producers: Celanese Pampa Texas + LyondellBasell Pasadena Texas + Eastman Chemical Kingsport Tennessee. US is structurally balanced for n-butyl acetate (combined US capacity ~500-800 kt/yr matches domestic demand).

Required documents

  • TSCA Section 13 Import Certification statement on customs entry
  • OSHA-compliant SDS reflecting H226 / H336 classification
  • Customs entry CBP Form 7501 with HS code 291533 (n-butyl acetate) and Section 301 List 3 25% duty applied
  • CDR filing every 4 years if site exceeds 25,000 lb/yr threshold (next cycle 2026)
  • NFPA 30-compliant storage tank engineering documentation for bulk receipt

Common compliance traps

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

  • **Lightest US-side regulatory profile in the dataset alongside ethyl acetate batch 23**: NOT on TRI, NOT on Cal Prop 65, NOT on DEA, NO active AD
  • OSHA PEL 150 ppm 8-hr TWA is moderate (lower than ethyl acetate batch 23 400 ppm; higher than benzene batch 22 1 ppm + formaldehyde batch 18 0.75 ppm)
  • Section 301 List 3 25% additional duty applies; structurally lighter than caprolactam batch 14 + acetic acid batch 19 lanes
  • Major US domestic producers: Celanese Pampa Texas, LyondellBasell Pasadena Texas, Eastman Chemical Kingsport Tennessee
  • US is structurally balanced for n-butyl acetate
  • NFPA 30 Flammable and Combustible Liquids Code applies for storage (Flam. Liq. 3)
  • n-Butyl acetate (CAS 123-86-4) dominant isomer; sec-, iso-, tert- butyl acetate are minor isomers with separate CAS numbers

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-butyl acetate, see the CAS 123-86-4 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the n-butyl acetate 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.

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Cross-jurisdiction profile and sourcing references

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