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Safety Data Sheet · SDS / MSDS

Carbon Dioxide CO₂ — SDS

Carbon dioxide · CO₂ · Carbonic acid gas
UN No: 1013CAS: 124-38-9Class: 2.2 — Non-flammable gasSignal: Warning
0
0
1
SA
NFPA 704: Health 1 · Fire 0 · Reactivity 0 · Special SA
SA = Simple asphyxiant.

Hazard identification (GHS)

  • Contains gas under pressure; may explode if heated (H280).
  • Asphyxiant in high concentrations; is also physiologically active — headache, dizziness and unconsciousness above ~5 %.
  • Solid/liquid CO₂ and cold vapour cause frostbite.

First-aid measures

Inhalation: remove to fresh air; give oxygen or artificial respiration as needed and get medical help. Frostbite: flush affected skin with lukewarm water; do not rub; seek medical attention.

Handling & storage

  • Ensure good ventilation; CO₂ is heavier than air and accumulates in cellars, pits and confined spaces.
  • Store cylinders upright, capped, below 52 °C, away from heat.
  • Use pressure regulators rated for CO₂; open valves slowly.

Physical & chemical properties

AppearanceColourless gas
OdourOdourless (slightly pungent at high conc.)
Molecular weight44.01
Sublimation point−78.5 °C
Relative density (air = 1)1.53
SolubilitySoluble in water

Stability & reactivity

Stable. No hazardous decomposition. Reacts with strong bases and reactive metals at high temperature.

Transport information

Carbon dioxide — Class 2.2, UN 1013, Label: Non-flammable gas.

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This is a summary Safety Data Sheet for reference. For the full signed SDS, grades, purity and cylinder options, contact our team.

Frequently asked questions

Carbon Dioxide (CO₂) is classified as 2.2 — Non-flammable gas. No — it is a non-flammable gas.
Carbon Dioxide is shipped as Carbon dioxide — Class 2.2, UN 1013, Label: Non-flammable gas.
The CAS number of Carbon Dioxide is 124-38-9.
This page is the IIGAS Carbon Dioxide (CO₂) Safety Data Sheet summary. For the full signed SDS document, contact IIGAS at marketing@iigas.com.

Reference summary only, compiled by International Industrial Gases Ltd (updated 2026-07-20). Values are for the compressed-gas form. It does not replace the full signed Safety Data Sheet supplied with the product; always follow the SDS provided with your cylinders.

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