2,3-Butanediol

2,3-Butanediol Basic information
Product Name:2,3-Butanediol
Synonyms:OMEGA-BUTYLENE GLYCOL;2,3-Butandiol;2,3-butanodiol;Dimethylethylene glycol;2,3-BUTANEDIOL (MIXTURE OF MESO- D- AND L-FORM) 98+%;2,3-BUTANEDIOL WITH GC;2,3-Butanediol, 98%, mixture of racemic and meso forms, tech.;2,3-Butanediol,98%,mixture of racemic and meso forms, techn.
CAS:513-85-9
MF:C4H10O2
MW:90.12
EINECS:208-173-6
Product Categories:Pharmaceutical Raw Materials
Mol File:513-85-9.mol
2,3-Butanediol Structure
2,3-Butanediol Chemical Properties
Melting point 25 °C (lit.)
Boiling point 183-184 °C (lit.)
density 1.002 g/mL at 20 °C (lit.)
vapor pressure <1 hPa (20 °C)
refractive index n20/D 1.433(lit.)
Fp 185 °F
storage temp. Store below +30°C.
solubility Chloroform, Methanol
pka14.67±0.20(Predicted)
form Viscous Liquid
color Colorless to pale yellow
PH7 (H2O, 20℃)Aqueous solution
Odorat 0.10 % in dipropylene glycol. fruity creamy buttery
Odor Typecreamy
explosive limit3.1-11.4%(V)
Water Solubility SOLUBLE
Sensitive Hygroscopic
Merck 14,1568
BRN 969165
Stability:Stable. Combustible. Incompatible with strong oxidizing agents, acid anhydrides, acid chlorides, chloroformates, reducing agents.
InChIKeyOWBTYPJTUOEWEK-UHFFFAOYSA-N
LogP-0.92 at 25℃
CAS DataBase Reference513-85-9(CAS DataBase Reference)
NIST Chemistry Reference2,3-Butanediol(513-85-9)
EPA Substance Registry System2,3-Butanediol (513-85-9)
Safety Information
Safety Statements 24/25
WGK Germany 1
RTECS EK0532000
Autoignition Temperature395 °C DIN 51794
TSCA Yes
HS Code 29053980
Hazardous Substances Data513-85-9(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: > 5000 mg/kg
MSDS Information
ProviderLanguage
2,3-Butylene glycol English
SigmaAldrich English
ACROS English
2,3-Butanediol Usage And Synthesis
Description2,3-Butanediol(23BD) is the organic compound with the formula (CH3CHOH). 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.
2,3-Butanediol is a commodity chemical usually produced from oil. It can be used as a precursor in the manufacture of a range of chemical products, including the solvents methyl ethyl ketone (MEK), gamma-butyrolactone (GBL), and 1,3-butadiene.
Chemical Propertiesviscous colourless liquid, or colourless to white solid
Uses2,3-Butanediol (2,3-BD) is a promising bulk chemical with a potentially wide range of applications e.g., in the manufacture of printing inks, perfumes, synthetic rubber, fumigants, antifreeze agents, fuel additives, foodstuffs and pharmaceuticals. Its high heating value and ability to increase the octane number of fuels make 2,3-BD a promising drop-in fuel. It can also be converted to methyl-ethyl ketone (MEK), which is considered an effective liquid fuel additive. After combination with MEK and hydrogenation reaction, 2,3-BD can be converted to octane, which is used to produce high-quality aviation fuel.
DefinitionChEBI: 2,3-Butanediol is a butanediol in which hydroxylation is at C-2 and C-3. It is a butanediol, a glycol and a secondary alcohol.
Preparation2,3-Butanediol is prepared by hydrolysis of 2,3-epoxybutane:
(CH3CH)2O + H2O → CH3(CHOH)2CH3
Reactions2,3-Butanediol undergo dehydration to form butanone (methyl ethyl ketone):
(CH3CHOH)2 → CH3C(O)CH2CH3 + H2O
It can also undergo deoxydehydration to form butene:
(CH3CHOH)2 + 2 H2 → C4H8 + 2 H2O
General Description2,3-Butanediol is a chiral compound which is extensively utilized in chemical feedstocks and liquid fuels.
Flammability and ExplosibilityNonflammable
Safety ProfileMildly toxic by ingestion. See also ETHYLENE GLYCOL. Flammable when exposed to heat or flame. Incompatible with oxidizing materials. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes
Purification MethodsRecrystallise it from isopropyl ether at low temperature. [Beilstein 1 IV 2524.]
1-BUTENE Diethylene glycol 5BETA-PREGNANE-3ALPHA,17ALPHA,20ALPHA-TRIOL (+/-)-1,2-BUTANEDIOL,1,2-BUTANEDIOL C8E3 CYMARIN 1,4-Butanediol DI(PROPYLENE GLYCOL) BUTYL ETHER 2,3-Butanediol Dibenzoyltartaric acid 2-Methyl-2,4-pentanediol 2-Butyne-1,4-diol PROPYLENE GLYCOL Ethylene glycol diacetate Ethylene glycol (S,S)-(+)-2,3-BUTANEDIOL,(S,S)-2,3-BUTANEDIOL 2-Butoxyethanol 2-Butoxyethyl acetate

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