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| | 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 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 | | pka | 14.67±0.20(Predicted) | | form | Viscous Liquid | | color | Colorless to pale yellow | | PH | 7 (H2O, 20℃)Aqueous solution | | Odor | at 0.10 % in dipropylene glycol. fruity creamy buttery | | Odor Type | creamy | | explosive limit | 3.1-11.4%(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. | | InChIKey | OWBTYPJTUOEWEK-UHFFFAOYSA-N | | LogP | -0.92 at 25℃ | | CAS DataBase Reference | 513-85-9(CAS DataBase Reference) | | NIST Chemistry Reference | 2,3-Butanediol(513-85-9) | | EPA Substance Registry System | 2,3-Butanediol (513-85-9) |
| Safety Statements | 24/25 | | WGK Germany | 1 | | RTECS | EK0532000 | | Autoignition Temperature | 395 °C DIN 51794 | | TSCA | Yes | | HS Code | 29053980 | | Hazardous Substances Data | 513-85-9(Hazardous Substances Data) | | Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
| | 2,3-Butanediol Usage And Synthesis |
| Description | 2,3-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 Properties | viscous colourless liquid, or colourless to white solid | | Uses | 2,3-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. | | Definition | ChEBI: 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. | | Preparation | 2,3-Butanediol is prepared by hydrolysis of 2,3-epoxybutane:
(CH3CH)2O + H2O → CH3(CHOH)2CH3 | | Reactions | 2,3-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 Description | 2,3-Butanediol is a chiral compound which is extensively utilized in chemical feedstocks and liquid fuels. | | Flammability and Explosibility | Nonflammable | | Safety Profile | Mildly 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 Methods | Recrystallise it from isopropyl ether at low temperature. [Beilstein 1 IV 2524.] |
| | 2,3-Butanediol Preparation Products And Raw materials |
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