CAS 107-06-2 · TSCA · United States of America

1,2-Dichloroethane (EDC, ethylene dichloride) under TSCA

C2H4Cl2 · 1,2-二氯乙烷

Status: Listed. EDC is on the TSCA Inventory and currently listed as TSCA Active. **OSHA PEL 50 ppm 8-hr TWA, 100 ppm Acceptable Ceiling, 200 ppm 5-min Peak** at 29 CFR 1910.1000 Table Z-2 (verify against https://www.osha.gov/annotated-pels). NOT on EPA RMP threshold list. NOT on DEA scheduling. **California Proposition 65 listed as carcinogen since 1 October 1987** (verify exact listing date against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before invoicing California-distributed product). **TRI Section 313 listed**. NO active US AD/CVD case on Chinese-origin EDC currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin EDC (HS 290315). EPA TSCA Section 6 risk evaluation: EDC was prioritised as high-priority substance (verify current TSCA risk-evaluation status against https://www.epa.gov/assessing-and-managing-chemicals-under-tsca before relying). Major US domestic producers: Olin Corporation (Freeport Texas), Westlake Chemical (Lake Charles Louisiana, Calvert City Kentucky), Occidental Chemical / OxyChem, Shintech / Shin-Etsu, Formosa Plastics (verify each company-site pair against the producer's public website before relying).

The US EDC lane is dominated by **OSHA PEL 50 ppm Table Z-2 + Cal Prop 65 carcinogen 1 October 1987 + TRI Form R + IARC Group 2B + EPA TSCA Section 6 high-priority designation**. NO active US AD/CVD case. Section 301 List 3 25% additional duty applies. Major US producers: Olin Corporation, Westlake Chemical, Occidental Chemical / OxyChem, Shintech / Shin-Etsu, Formosa Plastics.

Listing and threshold

Substance 1,2-Dichloroethane (EDC, ethylene dichloride) (CAS 107-06-2), C2H4Cl2
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 H225 / H302 / H315 / H319 / H335 / H350
  • OSHA PEL 29 CFR 1910.1000 Table Z-2: 50 ppm 8-hr TWA, 100 ppm Acceptable Ceiling, 200 ppm 5-min Peak (per https://www.osha.gov/annotated-pels)
  • NIOSH REL: 1 ppm 8-hr TWA (occupational carcinogen)
  • **EPA TSCA Section 6 high-priority designation for risk evaluation** (verify current status against EPA TSCA portal)
  • NOT on EPA RMP threshold list
  • NOT on DEA List I or List II
  • **California Proposition 65 listed as carcinogen since 1 October 1987** (verify exact listing date against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list)
  • **TRI Section 313 listed**: Form R annual reporting required
  • DOT 49 CFR 172.101: UN 1184, Class 6.1 + Class 3 subsidiary, PG II
  • **IARC: Group 2B (possibly carcinogenic to humans) per IARC Monograph 71 (1999); reaffirmed Group 2B per Monograph 110 (2017)** (verify Monograph volumes against https://monographs.iarc.who.int/list-of-classifications)

Restrictions and conditions of use

  • OSHA-compliant SDS and workplace HazCom training required
  • **OSHA PEL 50 ppm 8-hr TWA + 100 ppm Acceptable Ceiling + 200 ppm 5-min Peak** workplace exposure-control overhead
  • **Cal Prop 65 listing requires "WARNING"**
  • NO active US AD/CVD case on Chinese-origin EDC currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin EDC (HS 290315)
  • **TRI Form R annual reporting**
  • NFPA 30 Flammable and Combustible Liquids Code applies for storage

Importer obligations

TSCA self-certification regime. Dominant practitioner-facing layer is **OSHA PEL 50 ppm + Cal Prop 65 + TRI Form R + Section 301 + TSCA Section 6 high-priority watch**. NO active AD/CVD case. Major US producers: Olin Corporation Freeport Texas, Westlake Chemical (Lake Charles Louisiana + Calvert City Kentucky), Occidental Chemical / OxyChem, Shintech / Shin-Etsu, Formosa Plastics.

Required documents

  • TSCA Section 13 Import Certification on customs entry
  • OSHA SDS reflecting H225 / H302 / H315 / H319 / H335 / H350
  • CBP Form 7501 with HS 290315 + Section 301 List 3 25% duty
  • Cal Prop 65 "WARNING" label compliance
  • 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 50 ppm + 100 ppm Acceptable Ceiling + 200 ppm 5-min Peak** workplace exposure-control overhead
  • **Cal Prop 65 carcinogen since 1 October 1987**
  • **IARC Group 2B per Monograph 71 (1999); reaffirmed per Monograph 110 (2017)** (verify against https://monographs.iarc.who.int/list-of-classifications)
  • **TRI Form R annual reporting**
  • **EPA TSCA Section 6 high-priority designation** (long-term watch)
  • NO active US AD/CVD case on Chinese EDC currently
  • Section 301 List 3 25% additional duty applies
  • Major US producers: Olin Corporation Freeport Texas, Westlake Chemical, Occidental Chemical / OxyChem, Shintech / Shin-Etsu, Formosa Plastics

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for 1,2-dichloroethane (edc, ethylene dichloride), see the CAS 107-06-2 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the 1,2-dichloroethane (edc, ethylene dichloride) 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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