Crotonic acidCrotonic acid ((2E)-but-2-enoic acid) is a short-chain unsaturated carboxylic acid described by the formula CH3CH=CHCO2H. The name crotonic acid was given because it was erroneously thought to be a saponification product of croton oil. Read from the Chembox of the Wikipedia article Crotonic acid, revision 1369561199.

Property

Value

Formula

C4H6O2, 86.09 g/mol

Melting point

71.5 °C

Boiling point

187 °C

Density

1.02 g/cm³

pKa

4.69

The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.