CAS 1309-48-4 · IECSC · People's Republic of China

Magnesium oxide (magnesia) under IECSC

MgO · 氧化镁

Status: Listed. Magnesium oxide is on the IECSC public portion. **NOT on China's Catalog of Hazardous Chemicals at industrial-grade purity** (verify against the most recent MEE Catalog of Hazardous Chemicals before relying; low hazard profile beyond particulate dust). NOT on Highly Toxic Chemicals Catalog. NOT on Easily-Made Drugs Catalog. **China VAT export rebate** for magnesia (HS 251990) per current inorganic / mineral chemicals chapter rebate schedule (verify the rate against the most recent MOF / GACC rebate notice before invoicing). **China holds the world's largest magnesite reserves and dominates global magnesia capacity (verify percent-of-global share against ICIS or USGS Mineral Commodity Summaries before quoting); production concentrated in Liaoning Province magnesite belt (Haicheng plus Dashiqiao region).** Note: **China has periodically applied magnesia export quotas / export licensing controls** (verify current scope and rate against the most recent MOFCOM export-licensing catalogue before invoicing). Major Chinese producers: Haicheng Magnesite Group, Liaoning Jinding Magnesite, Liaoning Jiamei Magnesite, Liaoning Beihai Refractory Materials, Yingkou Beihai Refractory.

Magnesium oxide is comfortably IECSC-listed; typically NOT on Catalog of Hazardous Chemicals at industrial grade. NOT on Highly Toxic, NOT on Easily-Made Drugs. **China VAT export rebate plus periodic export-licensing controls** (verify both before invoicing). **Food-grade GB 25584-2010 plus ChP for pharma-grade**. China holds world's largest magnesite reserves and dominates global magnesia capacity (Liaoning belt: Haicheng + Dashiqiao). Production: magnesite calcination dominant.

Listing and threshold

Substance Magnesium oxide (magnesia) (CAS 1309-48-4), MgO
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 not typically required

Classifications under this regime

  • NOT typically on Catalog of Hazardous Chemicals at industrial-grade purity (verify against the most recent MEE Catalog before relying)
  • NOT on Highly Toxic Chemicals Catalog
  • NOT on Easily-Made Drugs Catalog
  • GB 25584-2010 food-grade magnesium oxide specification (verify the current magnesium-oxide-specific GB / GB-T standard at https://www.codeofchina.com/ before relying)
  • GB/T 17519-2013 Chinese SDS standard
  • GACC HS code: 251990
  • GB 6944-2012 transport: NOT regulated
  • **Pharma-grade compliance with Chinese Pharmacopoeia (ChP)** where placed as pharma-grade magnesium oxide antacid / laxative (verify monograph reference against the most recent ChP edition before relying)

Restrictions and conditions of use

  • Hazardous Chemicals Operation Permit not typically required (verify against the most recent MEE Catalog before relying)
  • **China VAT export rebate** rate per current inorganic / mineral chemicals chapter schedule (verify against the most recent MOF / GACC rebate notice before invoicing)
  • **China has periodically applied magnesia export quotas / export licensing** (verify current scope against the most recent MOFCOM export-licensing catalogue before invoicing)
  • GB/T 17519 Chinese SDS required
  • **Food-grade GB 25584-2010** specification compliance for E530 use

Importer obligations

For Chinese-origin magnesium oxide exported abroad, no IECSC obligation falls on the foreign importer; however, **Chinese export-licensing controls may apply** (verify against MOFCOM export-licensing catalogue before invoicing). Major Chinese producers: Haicheng Magnesite Group, Liaoning Jinding Magnesite, Liaoning Jiamei Magnesite, Liaoning Beihai Refractory Materials, Yingkou Beihai Refractory.

Required documents

  • GACC export declaration HS 251990
  • GHS Chinese SDS per GB/T 17519
  • Food-grade GB 25584-2010 certification where applicable
  • Pharma-grade ChP certification where applicable
  • MOFCOM export licence where applicable

Common compliance traps

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

  • Catalog of Hazardous Chemicals status (verify against the most recent MEE Catalog before relying)
  • **China VAT export rebate** rate (verify against the most recent MOF / GACC rebate notice before invoicing)
  • **Chinese export-licensing controls may apply on magnesia** (verify against MOFCOM catalogue before invoicing)
  • NOT on Highly Toxic, NOT on Easily-Made Drugs
  • Major Chinese producers concentrated in Liaoning Province magnesite belt (Haicheng + Dashiqiao)
  • Production: magnesite (MgCO3) calcination dominant in China; seawater / brine extraction marginal
  • **Refractory plus animal feed plus pharma antacid plus food-grade E530 plus magnesium metal 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 magnesium oxide (magnesia), see the CAS 1309-48-4 sourcing reference.

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

Referenced in

4 pages across the Sourzi moat

This term shows up in 4 regulatory pages. Sample backlinks per content type below.

Regulatory (4)

Plus 1 more regulatory pages.

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.