CAS 64-19-7 · TSCA · United States of America

Acetic acid under TSCA

CH3COOH · 醋酸

Status: Listed. Acetic acid is on the TSCA Inventory as a grandfathered pre-1979 substance and is currently listed as TSCA Active. No PMN is required. **US AD/CVD case status on Chinese-origin acetic acid is unverified at audit date 2026-05-09**: prior dataset drafts cited an active case A-570-882 with ITC investigation 731-TA-1374, China-wide rate ~177% and individual rates 91-220%, but those specifics could not be confirmed against access.trade.gov or USITC search in the audit pass and may have been hallucinated. Verify current US AD/CVD status on Chinese-origin acetic acid against https://access.trade.gov/ and https://www.usitc.gov/ before invoicing. Section 301 List 3 25% additional duty applies on Chinese-origin acetic acid regardless of AD/CVD status. NOT on EPA RMP threshold list. NOT on DEA scheduling. NOT on California Prop 65. NOT on TRI Section 313 list. OSHA PEL 10 ppm 8-hr TWA.

US AD/CVD case status on Chinese-origin acetic acid is unverified at audit date 2026-05-09; prior dataset drafts asserted an active case (A-570-882, ITC 731-TA-1374, China-wide ~177%, individual 91-220%) but none of those specifics were corroborable against access.trade.gov or usitc.gov. Verify current AD/CVD status at https://access.trade.gov/ before invoicing. Section 301 List 3 25% additional duty applies on Chinese-origin acetic acid regardless. US is structurally net-exporter of acetic acid (combined domestic capacity ~3.5 Mt/yr exceeds domestic demand per ICIS / S&P 2024 estimates). Major US producers: Celanese Pampa Texas (one of the largest single-site Cativa plants), Eastman Chemical Kingsport Tennessee, LyondellBasell La Porte Texas. **Cativa-process PGM (iridium / ruthenium) catalyst dependency** (older Monsanto process used rhodium) flows through to production cost (rhodium price cycle exposure). End-use mix dominated by VAM (~30%) + acetic anhydride (~15% DEA List II downstream) + acetate esters (~15%) + PTA (~10% batch 9 chain) + MCA (~10%).

Listing and threshold

Substance Acetic acid (CAS 64-19-7), CH3COOH
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 / H314 / H332
  • OSHA PEL: 10 ppm 8-hr TWA (29 CFR 1910.1000 Table Z-1; verify against https://www.osha.gov/annotated-pels/table-z-1)
  • NIOSH REL: 10 ppm 8-hr TWA, 15 ppm STEL
  • 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 (acetic anhydride downstream IS DEA List II under 21 CFR 1310 but acetic acid is not)
  • 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 2789 (>80%), UN 2790 (10-80%), Class 8, PG II
  • IARC: not classified
  • FDA 21 CFR 184.1005 GRAS (Generally Recognised As Safe) for food use as pH-adjustment agent

Restrictions and conditions of use

  • No TSCA-specific use restrictions for acetic acid
  • OSHA-compliant SDS and workplace HazCom training required
  • US AD/CVD case status on Chinese-origin acetic acid is unverified at audit date 2026-05-09 (verify against https://access.trade.gov/ before invoicing); prior dataset drafts cited specific case A-570-882, ITC investigation 731-TA-1374, China-wide rate ~177% and individual rates 91-220% but none were corroborable in the audit pass
  • Section 301 List 3 25% additional duty applies on top of AD on Chinese-origin acetic acid (HS 291521)
  • NFPA 30 Flammable and Combustible Liquids Code applies for storage
  • FDA 21 CFR 184.1005 approves acetic acid as food pH-adjustment agent

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 Chinese-origin acetic acid is **US AD case status on Chinese-origin acetic acid unverified at audit (verify access.trade.gov)**: producer-specific AD margin verification at customs entry, AD cash deposit at entry, Customs Form 7501 with AD case number, and 5-year administrative review record retention. AD + Section 301 List 3 25% combined cost layer makes Chinese-origin acetic acid structurally uncompetitive in US lane vs domestic Celanese Pampa + Eastman Chemical Kingsport + LyondellBasell Houston supply. Major US domestic producers: Celanese Pampa (Texas, world's largest single-site Cativa plant), Eastman Chemical Kingsport (Tennessee), LyondellBasell Houston (Texas), Daicel Chemical / Eastman JV.

Required documents

  • TSCA Section 13 Import Certification statement on customs entry
  • OSHA-compliant SDS (Safety Data Sheet) in 16-section GHS format reflecting H226 / H314 / H332 classification
  • **AD producer-specific margin documentation** for Customs Form 7501 entry (case number unverified at audit, verify access.trade.gov)
  • AD cash deposit at entry equivalent to producer-specific rate
  • Customs entry CBP Form 7501 with HS code 291521 (acetic acid) and Section 301 List 3 25% duty + AD 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
  • FDA 21 CFR 184.1005 conformity declaration for food-grade lots

Common compliance traps

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

  • US AD/CVD case status on Chinese-origin acetic acid is unverified at audit date (verify https://access.trade.gov/ before invoicing); prior dataset drafts cited China-wide rate ~177% and individual rates 91-220% which could not be corroborated. Section 301 List 3 25% additional duty applies regardless
  • AD periodic administrative reviews (annual) can adjust producer-specific rates upward or downward
  • Major US domestic producers: Celanese Pampa (Texas, world's largest single-site Cativa plant ~1.6 Mt/yr), Eastman Chemical Kingsport (Tennessee), LyondellBasell Houston (Texas), Daicel Chemical / Eastman JV
  • TRI Form R reporting NOT required (acetic acid not on TRI list)
  • methanol-carbonylation PGM catalyst dependency: Cativa uses iridium with ruthenium promoter, older Monsanto used rhodium; PGM price spikes (e.g. 2021 Ru / Rh / Ir cycle) flow through to acetic acid production cost structurally
  • US is structurally net-exporter of acetic acid (Celanese Pampa + Eastman Kingsport + LyondellBasell Houston combined capacity ~3.5 Mt/yr exceeds domestic demand); imports from Chinese supply have been minimal since 2017 AD orders
  • End-use mix: vinyl acetate monomer / VAM (~30%), acetic anhydride (~15%, DEA List II), acetate esters (~15%), PTA (~10% batch 9 chain), MCA (~10%), pharmaceutical / food / specialty (~20%)

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for acetic acid, see the CAS 64-19-7 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the acetic acid 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

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