Carbon monoxide

COCAS 630-08-028.01 g/mol

C−O+

Properties

Molecular formula
CO
Molar mass
28.01 g/mol
Exact mass
27.9949 Da
Density
1.25–3 g/mL (at 0 °C)
Melting point
−205 °C
Boiling point
−191.5 °C
Water solubility
20 g/L
logP
-0.04Crippen estimate
Polar surface area
19.9 Ų
H-bond donors / acceptors
0 / 0
Rotatable bonds
0

Hazards

Danger
Flammable (GHS02)Compressed Gas (GHS04)Acute Toxic (GHS06)Health Hazard (GHS08)

Harmonised EU classification (CLP Annex VI), via PubChem.

Precautionary statements

P203, P210, P222, P260, P261, P264, P270, P271, P280, P304+P340, P316, P318, P319, P321, P377, P381, P403, P403+P233, P405, P501

Identifiers

CAS number
630-08-0
SMILES
[C-]#[O+]
InChIKey
UGFAIRIUMAVXCW-UHFFFAOYSA-N
InChI
InChI=1S/CO/c1-2

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

3 names
  • Carbon oxide (CO)
  • Carbon monooxide
  • N 37

Work with Carbon monoxide

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Elsewhere