What is the tonnage threshold for TSCA on propylene (propene)?

CDR (Chemical Data Reporting) threshold: 25,000 lb (11,340 kg) manufactured or imported per site per year

CAS 115-07-1 · TSCA · United States of America

Propylene (propene) under TSCA

C3H6 · 丙烯

Status: Listed. Propylene is on the TSCA Inventory as a grandfathered pre-1979 substance and is currently listed as TSCA Active. Light-regulatory profile. **OSHA PEL: not specifically established** (simple asphyxiant; verify against https://www.osha.gov/annotated-pels). **Propylene IS listed on the EPA RMP regulated substances list at 40 CFR 68.130 Table 2 (flammable substances) with a threshold quantity of 10,000 lb** per prior EPA RMP rule references (verify the current TQ and Table listing against 40 CFR 68 at https://www.ecfr.gov/current/title-40/part-68 and https://www.epa.gov/rmp before relying for facility-threshold determination). 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 propylene currently (verify against https://access.trade.gov/ before invoicing; bulk-trade structurally limited). Section 301 List 3 25% additional duty applies on Chinese-origin propylene (HS 290122). Major US domestic producers (verify each company-site pair against the producer's public website before relying): ExxonMobil multi-site, Dow Chemical, LyondellBasell, Phillips 66 / CP Chem, Enterprise Products PDH, Formosa Plastics PDH. **US is structurally net-EXPORTER of propylene plus propane** through shale-gas advantage (LPG plus C3 fraction abundance feeds PDH plus steam-cracker capacity additions 2018 to 2026).

The US propylene lane has **light regulatory profile**: NOT on Cal Prop 65, NOT on TRI, NOT on DEA. **EPA RMP applies** (40 CFR 68.130 Table 2 flammable substances, 10,000 lb TQ per prior RMP rule references; verify against https://www.ecfr.gov/current/title-40/part-68). Section 301 List 3 25% additional duty applies but bulk-trade structurally limited. **US is structurally net-EXPORTER** of propylene plus propane through shale-gas-derived feedstock advantage; PDH capacity additions (Enterprise Products, Formosa, Dow, Phillips 66 / CP Chem) 2018 to 2026 extend dominance. Major US producers: ExxonMobil multi-site, Dow Chemical, LyondellBasell, Phillips 66 / CP Chem, Enterprise Products PDH, Formosa Plastics PDH.

Listing and threshold

Substance	Propylene (propene) (CAS 115-07-1), C3H6
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 H220
OSHA PEL: not specifically established (simple asphyxiant)
NIOSH REL: not specifically established
NOT subject to TSCA Section 6 Risk Evaluation
NOT on TSCA Section 5(a)(2) Significant New Use Rule list
EPA RMP: propylene IS listed at 40 CFR 68.130 Table 2 (flammable substances) with a threshold quantity of 10,000 lb per prior RMP rule references (verify against 40 CFR 68 at https://www.ecfr.gov/current/title-40/part-68 and https://www.epa.gov/rmp before relying for facility-threshold determination)
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 1077, Class 2.1 flammable gas
IARC: Group 3 (not classifiable as to its carcinogenicity to humans); propylene was evaluated in IARC Monograph Volume 60 (1994) per prior IARC list-of-classifications references (verify the current Group and Monograph volume against https://monographs.iarc.who.int/list-of-classifications before relying)

Restrictions and conditions of use

No TSCA Section 6 use restrictions
OSHA-compliant SDS and workplace HazCom training required
NO active US AD/CVD case on Chinese-origin propylene currently
Section 301 List 3 25% additional duty applies on Chinese-origin propylene (HS 290122)
NFPA 55 Compressed Gases and Cryogenic Fluids Code applies for storage
EPA Greenhouse Gas Reporting Program (40 CFR Part 98) may apply to upstream-producer facilities

Importer obligations

TSCA is a self-certification regime. Light-regulatory profile. **Propylene is structurally bulk-trade-limited**: international import to the US is rare due to abundant domestic supply and PDH capacity additions 2018 to 2026. Section 301 List 3 25% additional duty applies on rare Chinese-origin imports. Major US domestic producers: ExxonMobil multi-site, Dow Chemical, LyondellBasell, Phillips 66 / CP Chem, Enterprise Products PDH, Formosa Plastics PDH. **US is structurally net-EXPORTER**: shale-gas-derived propane abundance feeds PDH plus steam-cracker capacity (Enterprise Products plus Formosa plus Targa plus Energy Transfer LPG export terminals on the US Gulf Coast).

Required documents

TSCA Section 13 Import Certification statement on customs entry
OSHA-compliant SDS reflecting H220 classification
Customs entry CBP Form 7501 with HS code 290122 (propylene) and Section 301 List 3 25% duty applied
CDR filing every 4 years if site exceeds 25,000 lb/yr threshold
NFPA 55-compliant compressed-gas storage documentation for bulk receipt

Common compliance traps

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

**Light-regulatory profile**: NOT on TRI, NOT on Cal Prop 65, NOT on DEA, NO active AD; EPA RMP applies (40 CFR 68.130 Table 2 flammable substances, 10,000 lb TQ per prior RMP rule references; verify against https://www.ecfr.gov/current/title-40/part-68)
Section 301 List 3 25% additional duty applies; structurally lighter than caprolactam batch 14 plus acetic acid batch 19 lanes; bulk-trade structurally limited
Major US producers: ExxonMobil multi-site, Dow Chemical, LyondellBasell, Phillips 66 / CP Chem, Enterprise Products PDH, Formosa Plastics PDH
**US is structurally net-EXPORTER** of propylene plus propane through shale-gas advantage; PDH capacity additions 2018 to 2026
EPA GHG Reporting Program may apply to upstream-producer facilities (40 CFR Part 98)
NFPA 55 Compressed Gases storage requirements for bulk

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for propylene (propene), see the CAS 115-07-1 sourcing reference.

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

Cross-jurisdiction profile and sourcing references

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