CAS reference

Iodine

碘

High-value specialty cargo (USD 30-60/kg at 2026 prices). Ships in 50 kg fibre drums or 25 kg HDPE drums. Most global supply is from Chile and Japan brine sources; Chinese supply is small and typically re-export rather than primary. Verify origin documentation on every cargo.

CAS 7553-56-2 ·I2 ·MW 253.808 g/mol ·HS 280120

Identifiers

Synonyms
Molecular iodine, Diiodine
Formula
I2
Molecular weight
253.808 g/mol
SMILES
II
InChIKey
PNDPGZBMCMUPRI-UHFFFAOYSA-N
HS code (6-digit)
280120

Transport and hazard profile

Transport classification, UN number UN3495, IMDG Class 8, Packing Group III. Classified as a marine pollutant.

GHS hazard statements, Warning. H-codes, H312, H315, H332, H400. Refer to the substance SDS Section 2 for the full classification.

Regulatory profile across 5 jurisdictions

Verified against ECHA, US EPA TSCA Inventory, MEE China IECSC, NIER K-REACH, and AICIS AIIC. Last verification 2026-04-30. Confirm with the regulator portal before any shipping decision.

EU REACH
Listed
US TSCA
Listed
China IECSC
Listed
Korea K-REACH
Listed
Australia AICIS
Listed

Look up other substances at the REACH / TSCA cross-jurisdiction checker.

Common applications

  • · X-ray contrast media
  • · Pharmaceutical synthesis
  • · Animal feed (iodised salt)
  • · Polarising film
  • · Disinfectants

Typical Chinese supplier geography

Major Chinese capacity sits in Hebei (re-export), Shandong (re-export). Coastal producers (Shandong, Jiangsu, Zhejiang) typically dominate export volume because of port access; inland producers (Inner Mongolia, Xinjiang, Shaanxi) compete on raw-material cost but add inland-rail or trucking cost to reach the coast.

Sourcing documentation chain

Every shipment of Iodine from China should include a per-batch COA, a current SDS per GB/T 17519 on the China side and the destination jurisdiction's standard on the import side, a packing list, a bill of lading, and a certificate of origin plus an MSA China DG packing certificate. For Incoterms reference see FOB, CIF, and CFR.

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Where this substance shows up across Sourzi

Referenced in

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