CAS 124-38-9

Carbon dioxide

二氧化碳

CO2MW 44.009 g/molHS 281121 UN1013 · Class 2.2

From the buying desk

Liquefied or gaseous compressed cargo. Beverage, food-freezing, and inert-blanketing demand drives most trade. Specialty uses include enhanced oil recovery and supercritical CO2 extraction. China-export limited because domestic capacity dwarfs global demand.

Import Card

Before you order carbon dioxide from China, see its register listing, the duty, anti dumping cases and a supplier check on one card, each with its source and date.

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Identifiers

Synonyms
CO2, Carbonic anhydride, Dry ice (solid)
Formula
CO2
Molecular weight
44.009 g/mol
SMILES
O=C=O
InChIKey
CURLTUGMZLYLDI-UHFFFAOYSA-N
HS code (6-digit)
281121

Transport and hazard profile

Transport classification, UN number UN1013, IMDG Class 2.2.

GHS hazard statements, Warning. H-codes, H280. Refer to the substance SDS Section 2 for the full classification.

US and Australian rules for Carbon dioxide

Read from the official lists by CAS 124-38-9. Screening only: check the source before you ship, store or report.

California Prop 65

No entry

No entry for CAS 124-38-9 in the OEHHA list dated July 31, 2026.

Open the tool · Official source

OSHA exposure limit

Listed

Table Z-1: 5000 ppm, 9000 mg/m³ as an 8 hour average.

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Australian exposure standard

Listed

5000 ppm, 9000 mg/m³ as an 8 hour average, 30000 ppm, 54000 mg/m³ short term.

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CERCLA reportable quantity

No entry

No entry for CAS 124-38-9 in 40 CFR 302.4 as read on September 24, 2026.

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EPCRA Tier II threshold

No entry

Not on the Extremely Hazardous Substances list, so the general 10,000 lb Tier II threshold applies where an SDS is required.

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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

  • · Beverage carbonation
  • · Food freezing (dry ice)
  • · Welding shield gas
  • · Enhanced oil recovery
  • · Supercritical solvent extraction

Sourcing documentation chain

Every shipment of Carbon dioxide 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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Read next

Where this substance shows up across Sourzi

Referenced in

5 pages across the Sourzi moat

This term shows up in 5 regulatory pages. Sample backlinks per content type below.

Regulatory (5)

Plus 2 more regulatory pages.

Free download

Free PDF: the MSDS verification template Sourzi runs against the supplier sheet for every CAS number we book out of China.