CAS 1333-74-0 · TSCA · United States of America

Hydrogen (H2) under TSCA

H2 · 氢气

Status: Listed. Hydrogen is on the TSCA Inventory and is currently listed as TSCA Active. **EPA RMP threshold 10,000 lb** for regulated flammable substance (verify against 40 CFR 68.130 Table 2 at https://www.ecfr.gov/current/title-40/part-68). NOT on DEA scheduling. NOT on Cal Prop 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 (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin hydrogen (HS 280410) but bulk trade rare. **Inflation Reduction Act (IRA) Section 45V Production Tax Credit (PTC) for clean hydrogen**: USD 0.60-3.00/kg PTC depending on lifecycle GHG intensity (verified V23 audit; full $3 PTC for emissions below 0.45 kg CO2e/kg H2; sourced to 26 USC 45V at https://www.law.cornell.edu/uscode/text/26/45V). **DOE Hydrogen Hub funding $7B for 7 regional hydrogen hubs** (verify the current selected-hubs roster and award amounts against https://www.energy.gov/oced/regional-clean-hydrogen-hubs-h2hubs before relying on a specific count or amount).

The US hydrogen lane is dominated by **EPA RMP 10,000 lb threshold + Inflation Reduction Act Section 45V Clean Hydrogen Production Tax Credit (PTC) USD 0.60-3.00/kg + DOE Hydrogen Hub funding USD 7B for 7 regional hubs**. **H2 is structurally NOT internationally traded as compressed gas at scale**. Major US producers: Air Products + Air Liquide + Linde + Praxair (industrial-gas vendors), petroleum refineries + chlor-alkali plants (Cl2 batch 45 co-product). Plug Power + Cummins + Bloom Energy emerging electrolysis-route producers.

Listing and threshold

Substance Hydrogen (H2) (CAS 1333-74-0), H2
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)
  • **EPA RMP threshold 10,000 lb** (regulated flammable substance)
  • NOT subject to TSCA Section 6 Risk Evaluation
  • **EPA RMP threshold 10,000 lb** as flammable substance (correction)
  • 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 1049 (compressed) / UN 1966 (refrigerated liquefied), Class 2.1 flammable gas
  • IARC: not assigned
  • **Inflation Reduction Act Section 45V Clean Hydrogen Production Tax Credit (PTC)**: USD 0.60-3.00/kg base credit depending on lifecycle GHG intensity (full $3 PTC for lifecycle emissions <0.45 kg CO2e/kg H2; verified against 26 USC 45V at https://www.law.cornell.edu/uscode/text/26/45V; prevailing-wage/apprenticeship multiplier of 5x available; 10-year credit period from facility placed-in-service)

Restrictions and conditions of use

  • OSHA-compliant SDS and workplace HazCom training required
  • **EPA RMP threshold 10,000 lb**: Risk Management Plan filing required
  • NO active US AD/CVD case on Chinese-origin hydrogen currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin hydrogen (HS 280410) but bulk trade rare
  • NFPA 55 Compressed Gases and Cryogenic Fluids storage requirements apply
  • **IRA Section 45V Clean Hydrogen Production Tax Credit (PTC)** for green-hydrogen production

Importer obligations

TSCA is a self-certification regime. **H2 is structurally NOT internationally traded as compressed gas at scale**. **IRA Section 45V PTC** is the dominant US clean-hydrogen production incentive (transformative subsidy driving US green-hydrogen project pipeline 2024-2030). DOE Hydrogen Hub funding USD 7B for 7 regional hydrogen hubs (Appalachian + California + Gulf Coast + Heartland + Mid-Atlantic + Pacific Northwest + Heartland). Major US domestic producers: Air Products + Air Liquide + Linde + Praxair (industrial-gas vendors), petroleum refineries + chlor-alkali plants (chlorine batch 45 co-product). Plug Power + Cummins + Bloom Energy emerging electrolysis-route producers.

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 280410 (hydrogen) and Section 301 List 3 25% duty applied
  • **EPA RMP filing** (where site exceeds 10,000 lb threshold)
  • **IRA Section 45V PTC documentation** for clean-hydrogen production

Common compliance traps

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

  • **EPA RMP threshold 10,000 lb**: Risk Management Plan filing required
  • **Inflation Reduction Act Section 45V Clean Hydrogen Production Tax Credit**: USD 0.60-3.00/kg depending on lifecycle GHG intensity (transformative US subsidy)
  • **DOE Hydrogen Hub funding USD 7B**: 7 regional hydrogen hubs (Appalachian + California + Gulf Coast + Heartland + Mid-Atlantic + Pacific Northwest + Heartland)
  • **H2 is structurally NOT internationally traded as compressed gas at scale**
  • Major US producers: Air Products + Air Liquide + Linde + Praxair (industrial-gas vendors), petroleum refineries + chlor-alkali plants (Cl2 batch 45 co-product). Plug Power + Cummins + Bloom Energy emerging electrolysis-route
  • NO active US AD/CVD case

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for hydrogen (h2), see the CAS 1333-74-0 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the hydrogen (h2) 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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