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| Names | |||
|---|---|---|---|
| Preferred IUPAC name Propane-1,3-diol[1] | |||
| Other names 1,3-Dihydroxypropane Trimethylene glycol | |||
| Identifiers | |||
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3D model (JSmol) | |||
| Abbreviations | PDO | ||
| 969155 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider |
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| DrugBank |
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| ECHA InfoCard | 100.007.271 | ||
| EC Number |
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| KEGG |
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| MeSH | 1,3-propanediol | ||
| RTECS number |
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| UNII | |||
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| Properties | |||
| CH2(CH2OH)2 | |||
| Molar mass | 76.095 g·mol−1 | ||
| Appearance | Colourless liquid | ||
| Density | 1.0597 g cm−3 | ||
| Melting point | −27 °C; −17 °F; 246 K | ||
| Boiling point | 211 to 217 °C; 412 to 422 °F; 484 to 490 K | ||
| Miscible | |||
| logP | −1.093 | ||
| Vapor pressure | 4.5 Pa | ||
Refractive index (nD) | 1.440 | ||
| Thermochemistry | |||
Std enthalpy of formation(ΔfH⦵298) | −485.9–−475.7 kJ mol−1 | ||
Std enthalpy of combustion(ΔcH⦵298) | −1848.1–−1837.9 kJ mol−1 | ||
| Hazards | |||
| NFPA 704 (fire diamond) | |||
| Flash point | 79.444 °C (174.999 °F; 352.594 K) | ||
| 400 °C (752 °F; 673 K) | |||
| Safety data sheet (SDS) | sciencelab.com | ||
| Related compounds | |||
Relatedglycols | Ethylene glycol,1,2-propanediol | ||
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
1,3-Propanediol is theorganic compound with theformulaCH2(CH2OH)2. This 3-carbondiol is a colorless viscous liquid that ismiscible with water.
It is mainly used as a building block in the production of polymers such aspolytrimethylene terephthalate.[2]
1,3-Propanediol can be formulated into a variety of industrial products includingcomposites,adhesives,laminates,coatings,moldings,aliphaticpolyesters, andcopolyesters. It is also a commonsolvent. It is used as anantifreeze and as a component inwood paint.
1,3-Propanediol is mainly produced by the hydration ofacrolein. An alternative route involves thehydroformylation ofethylene oxide to form 3-hydroxypropionaldehyde. The aldehyde is subsequently hydrogenated to give 1,3-propanediol. Biotechnological routes are also known.[2]
Two other routes involvebioprocessing by certain micro-organisms:
1,3-Propanediol does not appear to pose a significant hazard via inhalation of either the vapor or a vapor/aerosol mixture.[7]
