3-methyl-2-butanol

Structural formula
Simplified structural formula without stereochemistry
General
Surname	3-methyl-2-butanol
other names	3-methylbutan-2-ol sec -isoamyl alcohol 2-isopentanol
Molecular formula	C 5 H 12 O
Brief description	colorless liquid
External identifiers / databases
CAS number 598-75-4 1572-93-6 ( R ) 1517-66-4 ( S ) EC number 209-950-2 ECHA InfoCard 100.009.047 PubChem 11732 ChemSpider 11239 Wikidata Q4634173
properties
Molar mass	88.15 g mol −1
Physical state	liquid
density	0.82 g cm −3
Melting point	−117 ° C
boiling point	112 ° C
Vapor pressure	20.6 hPa (30 ° C) 37.6 hPa (40 ° C) 65.9 hPa (50 ° C)
solubility	poor in water (59.3 g l −1 at 25 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 226-332-335 EUH: 066 P: 261
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

3-methyl-2-butanol (also called sec-isoamyl alcohol ) is an organic chemical compound from the group of alcohols . It is one of eight structural isomers of pentanols . It occurs in two stereoisomeric forms; a 1: 1 mixture (= racemate ) is commercially available .

properties

Chemical properties

The oxidation leads to 3-methylbutanone .

Safety-related parameters

3-Methyl-2-butanol forms highly flammable vapor-air mixtures. The compound has a flash point of 26 ° C. The explosion range is between 1.2% by volume (44 g / m ³ ) as the lower explosion limit (LEL) and 10.5% by volume (385 g / m ³ ) as the upper explosion limit (UEL). The ignition temperature is 347 ° C. The substance therefore falls into temperature class T2.

Individual evidence

1. ↑ ^{a b c d e f g h i j k l m} Entry on 3-methyl-2-butanol in the GESTIS substance database of the IFA , accessed on January 20, 2020(JavaScript required) .
2. ^ ^{A b c} E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.