All compounds

carbon monoxide

chemical compound

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C−O+
Formula
CO
Wikidata
Molar mass The mass of a mole of it, from the elements' atomic weights
28.010 g/mol
Worked out
Made of Atoms in one formula unit, and each element's share of the mass
2 atoms in all
Worked out
Other names
C#O, CO, Carboneum oxygenisatum, [CO], carbon oxide, carbon(II) oxide, carbonyl, carbonyl ligand, flue gas and monoxide
Wikidata
CAS Registry Number
630-08-0
Wikidata
PubChem
CID 281
Wikidata
InChIKey
UGFAIRIUMAVXCW-UHFFFAOYSA-N
Wikidata
SMILES
[C-]#[O+]
Wikidata
Wikidata item
Q2025
Wikidata

Compounds from Wikidata, whose data is free of copyright (CC0): every item with a chemical formula and an article on the English Wikipedia. Their structures are laid out from Wikidata's SMILES by RDKit.

Data from mendeleev (© 2024 Lukasz Mentel, MIT licence), Wikipedia (CC BY-SA 4.0) and PubChem, from the National Center for Biotechnology Information. Every value names its source. Values marked predicted have not been measured.