HazMat Tool — substance information

Carbon dioxide

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 1013
Hazard class
2.2
Packing group
ERG guide
ERG 120
Special provisions
Source
49 CFR §172 (15 June 2026)

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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-Number

124-38-9

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 120

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

2.2
Non-toxic, non-flammable gases

(4) Identification number Help

UN 1013

(5) Packing Group Help

n/a

(6) Labels Help

Non-toxic, non-flammable gases (2.2)

(7) Special Provisions (§172.102) Help

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions306see 49 CFR §173.306
(8B) Non-bulk302, 304see 49 CFR §173.302, 304
(8C) Bulk302, 314, 315see 49 CFR §173.302, 314, 315

(9) Quantity Limits Help

(9A) Passenger aircraft/rail75 kg
(9B) Cargo aircraft only150 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other n/a

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.

Similar substances

UN / IDProper shipping nameHazard class
UN 0222Ammonium nitrate, with more than 0.2 percent combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance1.1D
UN 1942Ammonium nitrate, with not more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance5.1
UN 1041Ethylene oxide and carbon dioxide mixtures with more than 9 percent but not more than 87 percent ethylene oxide2.1
UN 1952Ethylene oxide and carbon dioxide mixtures with not more than 9 percent ethylene oxide2.2
UN 3300Ethylene oxide and carbon dioxide mixture with more than 87 percent ethylene oxide2.3
UN 1845Carbon dioxide, solid or Dry ice9
UN 3150Devices, small, hydrocarbon gas powered or Hydrocarbon gas refills for small devices with release device2.1
UN 2187Carbon dioxide, refrigerated liquid2.2
UN 1058Liquefied gases, non-flammable charged with nitrogen, carbon dioxide or air2.2
UN 1010Butadienes, stabilized or Butadienes and Hydrocarbon mixture, stabilized containing more than 40% butadienes2.1
Di-n-butyl peroxydicarbonate, with more than 52 percent in solutionForbidden
Dibenzyl peroxydicarbonate, with more than 87 percent with waterForbidden
Diethyl peroxydicarbonate, with more than 27 percent in solutionForbidden
n-Butyl peroxydicarbonate, with more than 52 percent in solutionForbidden
UN 1379Paper, unsaturated oil treated incompletely dried (including carbon paper)4.2