Nitrogen (N2) under K-REACH
N2 · 氮气
Status: Registered. Nitrogen is registered under K-REACH. NOT on Korea TCCA Toxic Chemicals list (verify against the current TCCA Toxic Chemicals list at https://www.nics.go.kr/ before relying). NOT on Korean Drug Management Act precursor list. NO active Korean AD/CVD case on Chinese-origin nitrogen currently. Korea has substantial domestic industrial-N2 production from cryogenic ASU operations (Korea Industrial Gases / Linde Korea + Air Liquide Korea + Daesung Industrial Gases + SK materials), with major on-site supply for Samsung + SK Hynix semiconductor fabs + Hyundai Steel + POSCO; structurally domestic-supplied. KCFTA preferential zero-duty applies for any Chinese-origin imports (rare).
K-REACH treats nitrogen as a routine registered substance with no TCCA overlay. Korea structurally domestic-supplied (Linde Korea + Air Liquide Korea + Daesung Industrial Gases + SK materials captive ASU). NO active Korean AD/CVD case. **Nitrogen distinguishing pattern across all 5 regimes**: Production via cryogenic ASU dominant (co-produces N2 + O2 + Ar in atmospheric ratio ~78:21:1) + smaller volumes from PSA + membrane separation + completes industrial-gas chain alongside H2 batch 47 + CO2 batch 77 + ammonia synthesis feedstock (Haber-Bosch N2 + 3H2 → 2NH3 dominant captive use globally) plus food-MAP plus electronics-blanket (semiconductor + LCD + battery inerting) plus tire inflation plus tank-blanketing plus EOR downstream chains + low hazard profile across regimes (Press. Gas + simple-asphyxiant; no specific OSHA PEL or NIOSH REL).
Listing and threshold
| Substance | Nitrogen (N2) (CAS 7727-37-9), N2 |
|---|---|
| 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: Press. Gas (compressed) or Press. Gas (refrigerated liquefied) + simple-asphyxiant
- NOT on Korea TCCA Toxic Chemicals list
- NOT on Korean Drug Management Act precursor list
- Korean Customs Service (KCS) HS code: 280430
- IARC: Not classified
Restrictions and conditions of use
- No TCCA Toxic Chemicals Handling Permit required
- KOSHA MSDS in Korean required at workplace (Press. Gas + simple-asphyxiant)
- NO active Korean AD/CVD case on Chinese nitrogen currently
- KCFTA preferential zero-duty applies (HS 280430)
Importer obligations
Korean importer of record must hold K-REACH registration. Korea has substantial domestic industrial-N2 production from cryogenic ASU operations (Korea Industrial Gases / Linde Korea + Air Liquide Korea + Daesung Industrial Gases + SK materials); major on-site supply for Samsung + SK Hynix semiconductor fabs + Hyundai Steel + POSCO; structurally domestic-supplied with rare Chinese imports.
Required documents
- K-REACH registration number on Korean side
- Korean MSDS (Press. Gas + simple-asphyxiant)
- KCS declaration with HS 280430
- China-Korea FTA Form CO
Common compliance traps
The pitfalls that have bitten importers on this lane in the past. None of these is theoretical.
- Korea has substantial domestic industrial-N2 production from cryogenic ASU operations
- KCFTA preferential zero-duty applies
- NO active Korean AD/CVD case
- NOT on TCCA Toxic Chemicals list
- Major Korean ASU operators: Linde Korea + Air Liquide Korea + Daesung Industrial Gases + SK materials; on-site supply at Samsung + SK Hynix + Hyundai Steel + POSCO
Where to read next
For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for nitrogen (n2), see the CAS 7727-37-9 sourcing reference.
For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the nitrogen (n2) 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.
Read next
Cross-jurisdiction profile and sourcing references
Regulatory
Nitrogen (N2) under REACH
European Union listing status, classifications, importer obligations.
Regulatory
Nitrogen (N2) under TSCA
United States of America listing status, classifications, importer obligations.
Regulatory
Nitrogen (N2) under IECSC
People's Republic of China listing status, classifications, importer obligations.
Regulatory
Nitrogen (N2) under AICIS
Australia listing status, classifications, importer obligations.
CAS
CAS 7727-37-9 sourcing reference
Identifiers, hazard profile, IMDG transport class, and supplier geography for Nitrogen (N2).
Glossary
K-REACH, K-REACH
South Korean Act on the Registration and Evaluation of Chemicals, the Korean equivalent of EU REACH. Requires registration of substances manufactured in or imported into Korea above 1 tonne per year. Administered by the Ministry of Environment through NIER. Includes phase-in registration tiers, joint submission requirements, and a designated 'Only Representative' mechanism for non-Korean manufacturers.
Referenced in
5 pages across the Sourzi moat
This term shows up in 4 regulatory pages, 1 CAS profiles. Sample backlinks per content type below.
Free download
Free PDF: the same MSDS verification template the Sourzi team uses to cross-reference factory documents against TSCA, REACH, AICIS, and CDR before booking.