Client:
← All cache entries
172.18.0.1 · Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatibl...carbon dioxide 124-38-9
- Source
- pubchem
- Confidence
- medium
- Source URL
- https://pubchem.ncbi.nlm.nih.gov/compound/280
- PubChem CID
- 280
- Fetched (UTC)
- 2026-06-20T06:19:56.697048+00:00
- Updated (UTC)
- 2026-06-20T06:19:56.697048+00:00
- TTL
- 180 days
- Content hash
77e51152831efbcb- Verified by
- —
Diff
| Field | Status | Before (cached) | After (new) |
|---|
| Field | Status | Before (cached) | After (new) |
|---|
Synonyms
carbon dioxide carbonic anhydride 124-38-9 carbonic acid gas Carbonic acid anhydride methanedione Carbonica Kohlendioxyd Carbon oxide, di- Kohlensaure Khladon 744 After-damp AER Fixus Anhydride carbonique Dioxido de carbono Dioxyde de carbone Carbon oxide (CO2) R 744 Carbon-12 dioxide INS NO.290
Record content
These are the fields that get used when generating an SDS. Edit them via Recheck (PubChem) or Upload (your data) — direct editing is intentionally not supported; the audit trail is the cache row's data_source + updated_at.
GHS classification
- Signal
- —
- Pictograms
- GHS04 GHS07
- Classes
- Press. Gas (Comp.) (82%)
- Press. Gas (Ref. Liq.) (20.5%)
- Not Classified
- Gases under pressure - High pressure liquefied gas
- Specific target organ toxicity - Single exposure - Category 3 (Narcotic effects)
- H-statements
- H280 (82%): Contains gas under pressure; may explode if heated
- H281 (20.5%): Contains refrigerated gas; may cause cryogenic burns or injury
- H336 May cause drowsiness or dizziness
- H280 Contains gas under pressure; may explode if heated
Physical properties
- appearance
- Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heavier than air and may asphyxiate by the displacement of air. Soluble in water. Forms carbonic acid, a mild acid. Under prolonged exposure to heat or fire the container may rupture violently and rocket. Used to freeze food, to control chemical reactions, and as a fire extinguishing agent.
- odour
- Odorless
- boiling point
- Sublimes (NIOSH, 2024)
- melting point
- -109.3 °F (USCG, 1999)
- flash point
- Not applicable
- water solubility
- 0.2 % at 77 °F (NIOSH, 2024)
- density
- 1.56 at -110.2 °F (USCG, 1999) - Denser than water; will sink
- vapour density
- 1.53 (NIOSH, 2024) - Heavier than air; will sink (Relative to Air)
- vapour pressure
- 56.5 atm (NIOSH, 2024)
- log pow
- 0.83
Transport
- un number
- —
- un psn
- —
- hazard class
- —
- packing group
- —
Exposure limits
- osha pel
- Vacated 1989 OSHA PEL TWA 10,000 ppm (18,000 mg/cu m); STEL 30,000 ppm (54,000 mg/cu m) is still enforced in some states.
- niosh rel
- Recommended Exposure Limit: 15 Min Short-Term Exposure Limit: 30,000 ppm (54,000 mg/cu m).
- note
- Auto-sourced from PubChem. NZ WES must be confirmed against MBIE Workplace Exposure Standards table before use.
First aid
- inhalation
- · Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.
- skin
- Skin: FROSTBITE - If frostbite has occurred, seek medical attention immediately; do NOT rub the affected areas or flush them with water. In order to prevent further tissue damage, do NOT attempt to remove frozen clothing from frostbitten areas. If frostbite has NOT occurred, immediately and thoroughly wash contaminated skin with soap and water.
- eye
- Eye: FROSTBITE - If eye tissue is frozen, seek medical attention immediately; if tissue is not frozen, immediately and thoroughly flush the eyes with large amounts of water for at least 15 minutes, occasionally lifting the lower and upper eyelids. If irritation, pain, swelling, lacrimation, or photophobia persist, get medical attention as soon as possible.
- ingestion
- · Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.