| Isocrotonic acid | |
|---|---|
|
Other names
(Z)-2-Butenoic acid, cis-2-Butenoic acid, cis-β-Methylacryllic acid, (Z)-β-Methylacryllic acid |
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| Identifiers | |
| CAS number | 503-64-0 |
| Properties | |
| Molecular formula | C4H6O2 |
| Molar mass | 86.09 g mol−1 |
| Density | 1,03 g·cm-3 [1] |
| Melting point |
15 °C [1] |
| Boiling point |
168–169 °C [1] |
| Related compounds | |
| Related Carboxylic acids | Crotonic acid (trans isomer) Angelic acid (2-methyl-isocrotonic acid) |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Isocrotonic acid (or quartenylic acid) is the cis analogue of crotonic acid. It is an oil, possessing a smell similar to that of brown sugar. It boils at 171.9 °C, concomitant with conversion into crotonic acid. Isomerizaton is complete when the cis acid is heated to 170–180 °C in a sealed tube.