Back ۱٬۲-بوتاندیول AZB Butan-1,2-diol Catalan 1,2-Butandiol German 1,2-Butanoduolo Esperanto 1,2-butanodiol Spanish ۱٬۲-بوتاندیول Persian 1,2-butaanidioli Finnish Butane-1,2-diol French 1,2-ブタンジオール Japanese 1,2-Butanadiol Malay
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| Names | |
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| Preferred IUPAC name
Butane-1,2-diol | |
| Other names
1,2-Dihydroxybutane
α-Butylene glycol | |
| Identifiers | |
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3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.008.663 |
| EC Number |
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PubChem CID
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA)
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| Properties[1] | |
| C4H10O2 | |
| Molar mass | 90.121 g/mol |
| Density | 1.0023 g/cm3 (20 °C) |
| Melting point | −50 °C (−58 °F; 223 K)[note 1] |
| Boiling point | 195 to 196.9 °C (383.0 to 386.4 °F; 468.1 to 470.0 K) (96.5 °C at 10 mmHg) |
| miscible | |
| Solubility | soluble in ethanol, acetone; sparingly soluble in esters and ethers; insoluble in hydrocarbons |
Refractive index (nD)
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1.4378 (20 °C) |
| Viscosity | 7.3 mPa·s (20 °C) |
| Thermochemistry | |
Std enthalpy of
formation (ΔfH⦵298) |
−532.8 kJ/mol [2] |
Std enthalpy of
combustion (ΔcH⦵298) |
−2479 kJ/mol |
| Hazards[3] | |
| Flash point | 90 °C (194 °F; 363 K) |
| Safety data sheet (SDS) | ICSC 0395 |
| Related compounds | |
Related butanediols
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1,3-Butanediol 1,4-Butanediol 2,3-Butanediol |
Related compounds
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Ethylene glycol Propylene glycol 2-Hydroxybutyraldehyde 2-Hydroxybutyric acid α-Ketobutyric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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1,2-Butanediol is the organic compound with the formula HOCH2(HO)CHCH2CH3. It is classified as a vic-diol (glycol). It is chiral, although typically it is encountered as the racemic mixture. It is a colorless liquid.
- ^ Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, Florida: CRC Press. p. C-190. ISBN 0-8493-0462-8..
- ^ Moureu, H.; Dode, M. (1937), "Chaleurs de formation de l'oxyde d'ethylene, de l'ethanediol et de quelques homologues", Bull. Soc. Chim. Fr., 4: 637–47.
- ^ 1,2-Butanediol, International Chemical Safety Card 0395, Geneva: International Programme on Chemical Safety, March 1996.
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