2,3-Butanediol

2,3-Butanediol
2,3-butanediol
Names
Preferred IUPAC name
Butane-2,3-diol
Other names
2,3-Butylene glycol
Pseudobutylene glycol
2,3-Dihydroxybutane
Butan-2,3-diol
Diethanol[citation needed] & Bis-ethanol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.007.431 Edit this at Wikidata
EC Number
  • 208-173-6
UNII
  • InChI=1S/C4H10O2/c1-3(5)4(2)6/h3-6H,1-2H3
    Key: OWBTYPJTUOEWEK-UHFFFAOYSA-N
  • CC(C(C)O)O
Properties
C4H10O2
Molar mass 90.122 g·mol−1
Appearance Colorless liquid
Odor odorless
Density 0.987 g/mL
Melting point 19 °C (66 °F; 292 K)
Boiling point 177 °C (351 °F; 450 K)
Miscible
Solubility in other solvents Soluble in alcohol, ketones, ether
log P -0.92
Vapor pressure 0.23 hPa (20 °C)
Acidity (pKa) 14.9
1.4366
Thermochemistry
213.0 J/K mol
-544.8 kJ/mol
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
1
0
Flash point 85 °C (185 °F; 358 K)
402 °C (756 °F; 675 K)
Lethal dose or concentration (LD, LC):
5462 mg/kg (rat, oral)
Related compounds
Related butanediols
 1,4-Butanediol
1,3-Butanediol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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2,3-Butanediol is the organic compound with the formula (CH3CHOH)2. It is classified as a vic-diol (glycol). It exists as three stereoisomers, a chiral pair and the meso isomer. All are colorless liquids. Applications include precursors to various plastics and pesticides.