Isocrotonic acid

Structural formula
General
Surname	Isocrotonic acid
other names	( Z ) -2-butenoic acid cis -β-methacrylic acid ( Z ) -β-methyl acrylic acid cis -2-butenic acid (obsolete) Quartenylic acid (obsolete)
Molecular formula	C 4 H 6 O 2
External identifiers / databases
CAS number 503-64-0 EC number 207-973-2 ECHA InfoCard 100.007.249 PubChem 643792 Wikidata Q1674400
properties
Molar mass	86.09 g mol −1
Physical state	liquid
density	1.03 g cm −3
Melting point	15 ° C
boiling point	168-169 ° C
Refractive index	1.4450 (20 ° C)
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Isocrotonic acid , also cis -butenic acid, is a short-chain, monounsaturated fatty acid , a carboxylic acid in the group of alkenoic acids . The trans isomer of isocrotonic acid is crotonic acid .

Manufacturing

Isocrotonic produced during the distillation of 3-hydroxyglutaric under reduced pressure:

safety instructions

Isocrotonic acid has the UN number 3472 and the hazard identification number 80.

Individual evidence

1. ^ Richard Anschütz : V. v. Richter's chemistry of carbon compounds or organic chemistry. Volume 1, 7th edition, Cohen, 1894, p. 277, archive.org .
2. ↑ ^{a b c} The Merck Index . An Encyclopaedia of Chemicals, Drugs and Biologicals. 14th edition. 2006, ISBN 978-0-911910-00-1 , p. 894.
3. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-74.
4. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
5. ^ Hans Beyer and Wolfgang Walter : Organic Chemistry. S. Hirzel Verlag, Stuttgart 1984, ISBN 3-7776-0406-2 , pp. 229-230.
6. ↑ DGG dangerous goods quick information  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.