CAS 6484-52-2 · TSCA · United States of America

Ammonium nitrate (AN) under TSCA

NH4NO3 · 硝酸铵

Status: Listed. Ammonium nitrate is on the TSCA Inventory and is currently listed as TSCA Active. **Heavily regulated post-Oklahoma City bombing 1995**: AN retail tracking, secure storage, customer registration, and explosives-grade permit chain under federal explosives law (verify the current statutory framework names against the ATF and DHS CISA portals before relying on SAFE Explosives Act 2002 or Public Law 110-161 of 2008 specifically) + **ATF Federal explosives regulations + DHS CFATS chemical-of-interest** (verify the current CFATS Appendix A tier and screening-threshold-quantity against the DHS CISA portal before relying on Tier 1 specifically). NO active US AD/CVD case on Chinese-origin AN currently (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies on Chinese-origin AN (HS 310230). NOT on EPA RMP threshold list (oxidiser; not on RMP Table 1 toxic or Table 2 flammable). NOT on TRI Section 313 list. NOT on California Proposition 65 (verified absent from OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list at audit date 2026-05-12). Major US domestic producers (verify each company-site pair against the producer's public website before relying): Dyno Nobel, CF Industries, Yara North America, Koch Industries.

The US AN lane is dominated by **ATF Federal explosives regulations + DHS CFATS chemical-of-interest + AN retail tracking and customer registration under federal explosives law** (verify the current framework names against the ATF and DHS CISA portals before relying on SAFE Explosives Act 2002, Public Law 110-161, or CFATS Tier 1 specifically). NO active US AD/CVD case (verify against https://access.trade.gov/ before invoicing). NOT on EPA RMP threshold list. Section 301 List 3 25% additional duty applies. Major US producers (verify each company-site pair against the producer's public website before relying): Dyno Nobel, CF Industries, Yara North America, Koch Industries. **Oklahoma City bombing 1995 legacy drives ATF + DHS regulation parallel to civil-fertiliser and ANFO-mining-explosives applications**.

Listing and threshold

Substance Ammonium nitrate (AN) (CAS 6484-52-2), NH4NO3
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 H272 / H319
  • OSHA PEL: not specifically established
  • NIOSH REL: not specifically established
  • NOT subject to TSCA Section 6 Risk Evaluation
  • **ATF Federal explosives regulations**: AN retail tracking, secure storage, and permits under federal explosives law (verify the specific framework names against the ATF and DHS CISA portals before relying; prior dataset cited SAFE Explosives Act 2002 plus Public Law 110-161 of 2008)
  • **DHS CFATS chemical-of-interest**: above-threshold facilities require a Site Security Plan (verify the current CFATS Appendix A tier and screening-threshold-quantity against the DHS CISA portal before relying on Tier 1 specifically)
  • NOT on EPA RMP threshold list (oxidiser; not classified as toxic or flammable substance)
  • 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 1942 (technical) / UN 2067 (fertilisers) / UN 2071 (compound mixtures) / UN 0222 (explosive grade), Class 5.1 oxidiser

Restrictions and conditions of use

  • OSHA-compliant SDS and workplace HazCom training required
  • **ATF Federal explosives regulations under SAFE Explosives Act 2002**: AN retail tracking + secure storage
  • **DHS CFATS Tier 1 chemical-of-interest**: Site Security Plan required for above-threshold facilities
  • Public Law 110-161 (2008) ammonium nitrate security: customer registration + tracking
  • NO active US AD/CVD case on Chinese-origin AN currently
  • Section 301 List 3 25% additional duty applies on Chinese-origin AN (HS 310230)
  • EPA Hazardous Substance Spill Reporting (RCRA Subtitle C) for AN spills

Importer obligations

TSCA is a self-certification regime. The dominant practitioner-facing layer is **ATF Federal explosives regulations + DHS CFATS chemical-of-interest + AN retail tracking under federal explosives law** (verify the current framework names and tier thresholds against the ATF and DHS CISA portals before relying on SAFE Explosives Act 2002, Public Law 110-161, or CFATS Tier 1 specifically). NO active US AD/CVD case (verify against https://access.trade.gov/ before invoicing). Section 301 List 3 25% additional duty applies. Major US producers (verify each company-site pair against the producer's public website before relying): Dyno Nobel, CF Industries, Yara North America, Koch Industries.

Required documents

  • TSCA Section 13 Import Certification statement on customs entry
  • OSHA-compliant SDS reflecting H272 / H319 classification
  • Customs entry CBP Form 7501 with HS code 310230 (AN) and Section 301 List 3 25% duty applied
  • **ATF Federal Explosives Licence (FEL) + Federal Explosives Permit (FEP)** for above-threshold AN handling + sale
  • **DHS CFATS Tier 1 Top-Screen + Site Security Plan** for above-threshold facilities

Common compliance traps

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

  • **ATF Federal explosives regulations + DHS CFATS Tier 1 + SAFE Explosives Act 2002** retail tracking is the dominant practitioner overhead
  • **Public Law 110-161 (2008)** customer registration + tracking
  • NO active US AD/CVD case on Chinese AN currently
  • Section 301 List 3 25% additional duty applies
  • Major US producers (verify each company-site pair against the producer's public website before relying): Dyno Nobel, CF Industries, Yara North America, Koch Industries
  • **Closes nitric acid batch 40 + ammonia batch 37 chains directly**
  • **Oklahoma City bombing 1995 legacy drives ATF + DHS regulation**

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for ammonium nitrate (an), see the CAS 6484-52-2 sourcing reference.

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