C

Carbon monoxide

IUPAC: carbon monoxide

CO Inorganic Compounds CAS 630-08-0
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Quick Reference
Formula / NotationCO
CAS Number630-08-0
Molecular Weight28.010
Melting Point-326 °F (USCG, 1999)
Boiling Point-312.7 °F at 760 mmHg (USCG, 1999)
Density0.791 at -312.7 °F (USCG, 1999) - Less dense than water; will float
Solubility2 % (NIOSH, 2024)
AppearanceCarbon monoxide is a colorless, odorless gas. Prolonged exposure to carbon monoxide rich atmospheres may be fatal. It is easily ignited. It is just lighter than air and a flame can flash back to th...
Also Known Ascarbon monooxide; Carbonic oxide; Carbon oxide (CO); 630-08-0; carbon(II) oxide; Exhaust gas; Flue gas; monoxide; Kohlenmonoxid; Koolmonoxyde
CategoryInorganic Compounds

What is Carbon monoxide?

Carbon Monoxide can cause developmental toxicity according to an independent committee of scientific and health experts.

Formula & Notation

CO

IUPAC Name: carbon monoxide

Other Names / Synonyms: carbon monooxide; Carbonic oxide; Carbon oxide (CO); 630-08-0; carbon(II) oxide; Exhaust gas; Flue gas; monoxide; Kohlenmonoxid; Koolmonoxyde

Properties & Characteristics

Appearance: Carbon monoxide is a colorless, odorless gas. Prolonged exposure to carbon monoxide rich atmospheres may be fatal. It is easily ignited. It is just lighter than air and a flame can flash back to th.... Molecular formula: CO. Molecular weight: 28.010 g/mol. Boiling point: -312.7 °F at 760 mmHg (USCG, 1999). Melting point: -326 °F (USCG, 1999). Density: 0.791 at -312.7 °F (USCG, 1999) - Less dense than water; will float. Solubility: 2 % (NIOSH, 2024). Vapor pressure: greater than 35 atm (NIOSH, 2024). LogP: 0.7.

Physical Data

PropertyValue
Melting Point-326 °F (USCG, 1999)
Boiling Point-312.7 °F at 760 mmHg (USCG, 1999)
Density0.791 at -312.7 °F (USCG, 1999) - Less dense than water; will float
Molecular Weight28.010
Solubility2 % (NIOSH, 2024)
AppearanceCarbon monoxide is a colorless, odorless gas. Prolonged exposure to carbon monoxide rich atmospheres may be fatal. It is easily ignited. It is just lighter than air and a flame can flash back to th...

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Carbon monoxide
Formula CO
CAS Number 630-08-0
Molecular Weight 28.010
Synonyms carbon monooxide; Carbonic oxide; Carbon oxide (CO); 630-08-0; carbon(II) oxide; Exhaust gas; Flue gas; monoxide; Kohlenmonoxid; Koolmonoxyde

Frequently Asked Questions

Carbon Monoxide can cause developmental toxicity according to an independent committee of scientific and health experts.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.