2-Methyl-2,4-pentanediol
| Names | |
|---|---|
| Preferred IUPAC name
2-Methylpentane-2,4-diol | |
| Other names
2-Methyl-2,4-pentanediol Hexylene glycol Diolane 1,1,3-Trimethyltrimethylenediol 2,4-Dihydroxy-2-methylpentane Isol | |
| Identifiers | |
| |
3D model (JSmol) |
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| Abbreviations | MPD |
| 1098298 | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.003.173 |
| EC Number |
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PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 1993 |
CompTox Dashboard (EPA) |
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| Properties | |
| C6H14O2 | |
| Molar mass | 118.176 g·mol−1 |
| Appearance | colourless liquid |
| Odor | mild, sweetish |
| Density | 0.92 g/mL |
| Melting point | −40 °C (−40 °F; 233 K) |
| Boiling point | 197 °C (387 °F; 470 K) |
| miscible | |
| Vapor pressure | 0.05 mmHg (20°C) |
| Hazards | |
| GHS labelling: | |
| Warning | |
| H315, H319 | |
| P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364 | |
| Flash point | 98.3 °C (208.9 °F; 371.4 K) |
| Explosive limits | 1.3%-7.4% |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
none |
REL (Recommended) |
C 25 ppm (125 mg/m3) |
IDLH (Immediate danger) |
N.D. |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
2-Methyl-2,4-pentanediol (MPD) is an organic compound with the formula (CH3)2C(OH)CH2CH(OH)CH3. This colourless liquid is a chiral diol. It is produced industrially from diacetone alcohol by hydrogenation. Total European and USA production was 15000 tonnes in 2000.
2-Methyl-2,4-pentanediol exists as two enantiomers, (4R)-(−) and (4S)-(+). In the Protein Data Bank, the 3-letter code "MPD" refers to the (S)-(−) enantiomer, while "MRD" is used to refer to the (R)-(+) version. Commercial products labeled "MPD" are usually the racemate, also sold as and referred to as "hexylene glycol".