CAS 62-53-3 · TSCA · United States of America

Aniline (aminobenzene) under TSCA

C6H7N · 苯胺

Status: Listed. Aniline is on the TSCA Inventory as a grandfathered pre-1979 substance and is currently listed as TSCA Active. **OSHA PEL 5 ppm (skin notation) 8-hr TWA** at 29 CFR 1910.1000 Table Z-1 (verify against https://www.osha.gov/annotated-pels). **California Proposition 65 listed as carcinogen since 1 January 1990** (verify exact listing date against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before invoicing California-distributed product; some references cite 1989 listing). **TRI Section 313 listed**: Form R annual reporting required. NOT on EPA RMP threshold list. NOT on DEA scheduling. NO active US AD/CVD case on Chinese-origin aniline currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin aniline (HS 292141). Major US domestic producers (verify each company-site pair against the producer's public website before relying): Huntsman Geismar Louisiana (largest US producer with integrated MDI chain), Covestro Baytown Texas (former Bayer MaterialScience), DuPont Sabine Pass Texas.

The US aniline lane is dominated by **OSHA PEL 5 ppm (skin notation) compliance + Cal Prop 65 "WARNING" labelling (since 1989) + TRI Form R annual reporting + RCRA hazardous waste tracking** workplace + downstream + waste-management compliance overhead. NO active US AD/CVD case. Section 301 List 3 25% additional duty applies. Major US producers: Huntsman Geismar Louisiana (~360 kt/yr aniline integrated MDI chain), Covestro Baytown Texas, DuPont Sabine Pass Texas. US is comparatively self-sufficient through domestic supply integrated to MDI / TDI chain. **Aniline distinguishing pattern in US lane**: heavy workplace overhead (5 ppm skin-notation OSHA PEL is among lowest in dataset) + integrated MDI / TDI chain dominates demand (~85%); RCRA hazardous-waste P-listed status is unique among substances in dataset.

Listing and threshold

Substance Aniline (aminobenzene) (CAS 62-53-3), C6H7N
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 H301 / H311 / H317 / H318 / H331 / H341 / H351 / H372 / H410
  • OSHA PEL 29 CFR 1910.1000 Table Z-1: 5 ppm (skin notation) 8-hr TWA (per https://www.osha.gov/annotated-pels)
  • NIOSH REL: not specifically established; recommended occupational exposure limit ~2 ppm
  • NOT subject to TSCA Section 6 Risk Evaluation currently
  • 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
  • **California Proposition 65 listed as carcinogen since 1 January 1990** (verify exact listing date against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list)
  • **TRI Section 313 listed**: Form R annual reporting required for facilities above thresholds
  • DOT hazardous materials regulation (49 CFR 172.101): UN 1547, Class 6.1, PG II
  • **IARC: Group 2B (possibly carcinogenic to humans) since 2021**

Restrictions and conditions of use

  • No TSCA Section 6 use restrictions currently
  • OSHA-compliant SDS and workplace HazCom training required
  • **OSHA PEL 5 ppm (skin notation) 8-hr TWA** drives substantial workplace exposure-control overhead (skin contact pathway via dermal absorption)
  • **Cal Prop 65 listing requires "WARNING"** on consumer products containing aniline above No-Significant-Risk-Level
  • NO active US AD/CVD case on Chinese-origin aniline currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin aniline (HS 292141)
  • EPA RCRA Subtitle C: aniline is a hazardous waste (P-listed) when discarded; hazardous waste tracking + manifest + treatment compliance
  • 49 CFR Part 172 hazmat employee training required for transport
  • TRI Form R annual reporting

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 aniline is **OSHA PEL 5 ppm (skin notation) compliance + Cal Prop 65 "WARNING" labelling + TRI Form R annual reporting + RCRA hazardous waste tracking**. NO active AD/CVD case so no AD margin documentation. Section 301 List 3 25% additional duty applies. Major US domestic producers: Huntsman Geismar Louisiana (largest US producer ~360 kt/yr aniline; integrated MDI chain), Covestro Baytown Texas, DuPont Sabine Pass Texas. US is comparatively self-sufficient in aniline through domestic supply integrated to MDI / TDI chain (~85% of demand).

Required documents

  • TSCA Section 13 Import Certification statement on customs entry
  • OSHA-compliant SDS reflecting H301 / H311 / H317 / H318 / H331 / H341 / H351 / H372 / H410 classification
  • Customs entry CBP Form 7501 with HS code 292141 (aniline) and Section 301 List 3 25% duty applied
  • Cal Prop 65 "WARNING" label compliance documentation for consumer-product downstream applications
  • TRI Form R annual report (where site exceeds 25,000 lb manufacture / 10,000 lb other-use thresholds)
  • RCRA hazardous waste manifest for spent aniline + aniline-contaminated waste
  • CDR filing every 4 years if site exceeds 25,000 lb/yr threshold (next cycle 2026)

Common compliance traps

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

  • **OSHA PEL 5 ppm (skin notation) compliance** drives workplace exposure-control overhead with substantial skin-contact pathway management (dermal absorption is significant)
  • **Cal Prop 65 listing applies to all finished-product distribution to California**
  • **TRI Form R annual reporting**
  • **RCRA hazardous waste tracking**: aniline is P-listed when discarded; hazardous waste manifest + treatment compliance
  • NO active US AD/CVD case on Chinese aniline currently
  • Section 301 List 3 25% additional duty applies; structurally lighter than caprolactam batch 14 + acetic acid batch 19 lanes
  • Major US domestic producers: Huntsman Geismar Louisiana (largest US producer ~360 kt/yr aniline; integrated MDI chain), Covestro Baytown Texas, DuPont Sabine Pass Texas
  • US is comparatively self-sufficient in aniline through domestic supply integrated to MDI / TDI chain (~85% of demand)
  • Production route: nitrobenzene hydrogenation; benzene (batch 22) + nitric acid + sulfuric acid (batch 2) feedstock chain

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for aniline (aminobenzene), see the CAS 62-53-3 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the aniline (aminobenzene) 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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