Crotyl alcohol

Crotyl alcohol, or crotonyl alcohol, is an unsaturated alcohol. It is a colourless liquid that is moderately soluble in water and miscible with most organic solvents. Two isomers of this alcohol exist, cis and trans.

Crotyl alcohol^[1]

Names
Preferred IUPAC name (2E)-But-2-en-1-ol
Other names (E)-But-2-en-1-ol Crotyl alcohol Crotonyl alcohol 2-Butenol
Identifiers
CAS Number	6117-91-5 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:62891
ChEMBL	ChEMBL118459 Y
ChemSpider	13871721 Y
ECHA InfoCard	100.025.533
EC Number	207-996-8
PubChem CID	637922
UNII	D7F26UNN0B Y
UN number	2614
CompTox Dashboard (EPA)	DTXSID2052283
InChI InChI=1S/C4H8O/c1-2-3-4-5/h2-3,5H,4H2,1H3/b3-2+ Y Key: WCASXYBKJHWFMY-NSCUHMNNSA-N Y InChI=1/C4H8O/c1-2-3-4-5/h2-3,5H,4H2,1H3/b3-2+ Key: WCASXYBKJHWFMY-NSCUHMNNBR
SMILES C\C=C\CO
Properties
Chemical formula	C4H8O
Molar mass	72.10 g/mol
Density	0.8454 g/cm3
Melting point	< 25 °C (77 °F; 298 K)
Boiling point	121.2 °C (250.2 °F; 394.3 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H226, H302, H312, H315, H319
Precautionary statements	P210, P233, P240, P241, P242, P243, P264, P270, P280, P301+P312, P302+P352, P303+P361+P353, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P378, P403+P235, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

It can be synthesized by the hydrogenation of crotonaldehyde. The compound is of little commercial interest.^[2]

See also

• Crotyl
• Allyl alcohol
• Crotonaldehyde
• Crotonic acid

References

1. Merck Index, 11th Edition, 2604
2. Falbe, Jürgen; Bahrmann, Helmut; Lipps, Wolfgang; Mayer, Dieter. "Alcohols, Aliphatic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a01_279. ISBN 978-3527306732..