CAS 7664-41-7 · K-REACH · Republic of Korea

Ammonia (anhydrous) under K-REACH

NH3 · 氨

Status: Registered. Ammonia is registered under K-REACH and listed as a Priority Existing Chemical (PEC). Korean GHS classification matches REACH. **Ammonia IS on Korea TCCA Toxic Chemicals list**: TCCA Toxic Chemicals Handling Permit at destination facility required. NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin ammonia. Korea has limited domestic ammonia production (Hanwha Solutions Yeosu + Lotte Chemical Yeosu); structurally net-importer for fertiliser + industrial chemicals + emerging green-ammonia clean-energy carrier applications. KCFTA preferential zero-duty applies for Chinese-origin imports.

K-REACH treats ammonia as a routine PEC-registered substance but **TCCA Toxic Chemicals Handling Permit at destination facility is the dominant practitioner overhead**. Korea has limited domestic ammonia production; structurally net-importer. **Korean green-ammonia hydrogen-economy ambition** drives 2024 large-scale green-ammonia import contracts with Saudi NEOM + Australian Pilbara projects. **Ammonia distinguishing pattern across all 5 regimes**: Haber-Bosch process upstream of urea batch 5 + DAP batch 11 + AS batch 12 chains (~85% combined of NH3 demand) + Acute Tox. 3 inhalation H331 + Skin Corr. 1B + Press. Gas + Flam. Gas 2 + Aquatic Acute 1 + IN CBAM PHASE 1 SCOPE (effective 1 January 2026; transitional reporting since 1 October 2023) + China Highly Toxic + Hazardous dual-permit chain + global ammonia reshaping post-2022 Russia-Belarus sanctions + emerging green-ammonia hydrogen-economy era (Korean MFE + EU + Japanese imports of Australian Pilbara + Saudi NEOM green-ammonia 2027-2030 timeline).

Listing and threshold

Substance Ammonia (anhydrous) (CAS 7664-41-7), NH3
Regime Korea Act on the Registration and Evaluation of Chemicals (Act No. 11789, "K-REACH" amended 2018)
Jurisdiction Republic of Korea
Status Registered
Tonnage threshold K-REACH registration required for existing chemicals manufactured or imported >1 tonne/year (verified per Korean Ministry of Environment / NIER guidance, https://chemical.chemlinked.com/chempedia/k-reach; threshold for new substances was reduced from 0.1 t/y to 1 t/y effective 1 January 2025 per K-REACH 2025 amendment)

Classifications under this regime

  • Korean GHS classification: Flam. Gas 2 (H221), Press. Gas, Acute Tox. 3 inhalation (H331), Skin Corr. 1B (H314), STOT SE 3 (H335), Aquatic Acute 1 (H400)
  • Signal word: DANGER. GHS pictograms: GHS04 + GHS05 + GHS06 + GHS07 + GHS09
  • Korea Occupational Safety and Health Act (KOSHA) workplace exposure standard: 25 ppm 8-hr TWA, 35 ppm STEL
  • **Listed in Korea TCCA Toxic Chemicals list**
  • NOT on Korean Drug Management Act precursor list
  • Korean Customs Service (KCS) HS code: 281410 (anhydrous), 281420 (aqueous)
  • IARC: not assigned (verify against current IARC list-of-classifications at https://monographs.iarc.who.int/list-of-classifications before relying on a negative classification)

Restrictions and conditions of use

  • **TCCA Toxic Chemicals Handling Permit at destination facility required**
  • Chemical Accident Prevention Plan (CAPP) may be required at handling facilities
  • Korea Industrial Safety and Health Act (KOSHA) MSDS in Korean required at workplace
  • NO active Korean AD/CVD case on Chinese-origin ammonia currently
  • KCFTA preferential zero-duty applies to Chinese-origin ammonia (HS 281410)
  • **Korean green-ammonia hydrogen-economy ambition**: Korea has aggressive 2030 + 2040 + 2050 hydrogen-economy targets including ammonia as hydrogen carrier; 2024 large-scale green-ammonia import contracts with Saudi NEOM + Australian Pilbara projects

Importer obligations

The Korean importer of record must hold K-REACH registration. **TCCA Toxic Chemicals Handling Permit at destination facility is the dominant practitioner-facing overhead**. Korea has limited domestic ammonia production; structurally net-importer for fertiliser + industrial chemicals + emerging green-ammonia clean-energy carrier applications.

Required documents

  • K-REACH registration number on Korean side (registrant or OR-appointed)
  • Korean-language MSDS compliant with Korean GHS reflecting H221 / H314 / H331 / H335 / H400 classification
  • Korean Customs Service (KCS) declaration with HS code 281410
  • **TCCA Toxic Chemicals Handling Permit** at destination facility
  • China-Korea FTA Form CO certificate of origin for preferential treatment

Common compliance traps

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

  • Korean GHS hazard-statement codes use H-codes mapped to Korean translations
  • **TCCA Toxic Chemicals Handling Permit at destination facility is the dominant practitioner overhead**
  • Korea has limited domestic ammonia production; structurally net-importer
  • KCFTA preferential zero-duty applies
  • NO active Korean AD/CVD case on Chinese ammonia currently
  • **Korean green-ammonia hydrogen-economy ambition**: aggressive 2030 + 2040 + 2050 hydrogen-economy targets; 2024 large-scale green-ammonia import contracts with Saudi NEOM + Australian Pilbara projects (Asian Renewable Energy Hub + Western Green Energy Hub + Murchison Hydrogen Renewables)

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for ammonia (anhydrous), see the CAS 7664-41-7 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the ammonia (anhydrous) cornerstone hub covers the full sourcing chain.

For the structure and history of K-REACH, see the K-REACH 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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Free PDF: the same MSDS verification template the Sourzi team uses to cross-reference factory documents against TSCA, REACH, AICIS, and CDR before booking.