HazMat Tool — substance information
Reference only — not a shipping paper, placard mandate, or CVI record.
Carbon dioxide
HMT 15 June 2026- UN / ID
- UN 1013
- Hazard class
- 2.2
- Packing group
- — (multiple — see tabs)
- ERG guide
- ERG 120
- Special provisions
- —
- Source
- 49 CFR §172 (15 June 2026)
Carbon dioxide
Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at normally-encountered concentrations it is odorless. As the source of carbon in the carbon cycle, atmospheric CO2 is the primary carbon source for life on Earth Wikipedia
Substance Data
Source: PubChem (HSDB, 09.12.2019)CAS-Number124-38-9 |
Flash Point— | Boiling Point— |
| Emergency Response Guide No. 120 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard class2.2Non-toxic, non-flammable gases |
(4) Identification number |
(5) Packing Group |
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(6) Labels |
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(7) Special Provisions (§172.102)
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| — |
|---|
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | 306 | see 49 CFR §173.306 |
|---|---|---|
| (8B) Non-bulk | 302, 304 | see 49 CFR §173.302, 304 |
| (8C) Bulk | 302, 314, 315 | see 49 CFR §173.302, 314, 315 |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | 75 kg |
|---|---|
| (9B) Cargo aircraft only | 150 kg |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (10B) Other | — |