CAS 7782-44-7 · IECSC · People's Republic of China

Oxygen (O2) under IECSC

O2 · 氧气

Status: Listed. Oxygen is on the IECSC public portion. **On China's Catalog of Hazardous Chemicals at industrial-grade purity** as an oxidizer (verify the specific entry against the most recent MEE Catalog of Hazardous Chemicals before relying); GB 6944 Class 2.2 + 5.1 transport status applies. NOT on Highly Toxic Chemicals Catalog. NOT on Easily-Made Drugs Catalog. **China VAT export rebate** for oxygen (HS 280440) per current inorganic chemicals chapter rebate schedule (verify the rate against the most recent MOF / GACC rebate notice before invoicing). Major Chinese industrial-O2 sources tied to ASU on-site supply at Sinopec + CNPC petrochemical complexes, Baowu Steel + HBIS Group steel mills, Hangzhou Hangyang industrial-gas company, Yingde Gases (formerly Praxair China JV), Linde China; verify each producer-site pair against the producer's public website before relying on a specific plant.

Oxygen is comfortably IECSC-listed but **on Catalog of Hazardous Chemicals at industrial-grade purity as oxidizer** (Hazardous Chemicals Operation Permit required at producer + distributor sites). NOT on Highly Toxic, NOT on Easily-Made Drugs. **China VAT export rebate** rate per current schedule (verify before invoicing). Industrial O2 is captive ASU.

Listing and threshold

Substance Oxygen (O2) (CAS 7782-44-7), O2
Regime China Inventory of Existing Chemical Substances (IECSC), administered by the Ministry of Ecology and Environment (MEE)
Jurisdiction People's Republic of China
Status Listed
Tonnage threshold No new-substance threshold. Hazardous Chemicals Operation Permit required for compressed / refrigerated-liquefied transport (verify against the most recent MEE Catalog before relying)

Classifications under this regime

  • On Catalog of Hazardous Chemicals at industrial-grade purity as oxidizer (verify the specific entry against the most recent MEE Catalog before relying)
  • GB 6944-2012 transport: Class 2.2 + subsidiary 5.1 (compressed UN 1072 or refrigerated liquefied UN 1073)
  • NOT on Highly Toxic Chemicals Catalog
  • NOT on Easily-Made Drugs Catalog
  • GB/T 17519-2013 Chinese SDS standard
  • GACC HS code: 280440
  • **Pharma-grade compliance with Chinese Pharmacopoeia (ChP)** where placed as medical-grade O2 (verify monograph reference against the most recent ChP edition before relying)

Restrictions and conditions of use

  • **Hazardous Chemicals Operation Permit required** at producer plus distributor sites (verify against the most recent MEE Catalog before relying)
  • **China VAT export rebate** rate per current inorganic chemicals chapter schedule (verify against the most recent MOF / GACC rebate notice before invoicing)
  • GB/T 17519 Chinese SDS required (Ox. Gas 1 + Press. Gas + fire-acceleration handling notes)
  • GB 6944 Class 2.2 + 5.1 transport classification applies

Importer obligations

For Chinese-origin industrial oxygen, no IECSC obligation falls on the foreign importer (O2 is rarely cross-border traded at scale due to low value-density and regional captive ASU structure). Major Chinese sources: Sinopec + CNPC ASUs, Baowu Steel + HBIS Group, Hangzhou Hangyang, Yingde Gases, Linde China.

Required documents

  • GACC export declaration HS 280440
  • GHS Chinese SDS per GB/T 17519
  • Hazardous Chemicals Operation Permit at producer + distributor sites
  • GB 6944-2012 Class 2.2 + 5.1 transport documentation
  • Pharma-grade ChP certification where applicable

Common compliance traps

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

  • On Catalog of Hazardous Chemicals at industrial-grade purity as oxidizer (verify against the most recent MEE Catalog before relying)
  • **Hazardous Chemicals Operation Permit required** at producer + distributor sites
  • **China VAT export rebate** rate (verify against the most recent MOF / GACC rebate notice before invoicing)
  • NOT on Highly Toxic, NOT on Easily-Made Drugs
  • Major Chinese sources (captive ASU): Sinopec + CNPC + Baowu Steel + HBIS Group + Hangzhou Hangyang + Yingde Gases + Linde China (verify each producer-site pair)
  • **Steel-mill BOF feedstock + medical-O2 + oxy-fuel welding + pulp bleaching + semiconductor + chemical synthesis captive feedstock downstream chains** dominate Chinese consumption

Where to read next

For substance-level identifiers (formula, molecular weight, SMILES, InChIKey), GHS hazard profile, IMDG transport class, and full sourcing reference for oxygen (o2), see the CAS 7782-44-7 sourcing reference.

For grade-by-grade buying notes, freight maths, supplier-tier pricing, and a worked landed-cost example, the oxygen (o2) cornerstone hub covers the full sourcing chain.

For the structure and history of IECSC, see the IECSC 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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