Glycerol
Glycerol (/ˈɡlɪsərɒl/), also called glycerine or glycerin, is a simple triol compound. It is a colorless, odorless, viscous liquid that is sweet-tasting and non-toxic. The glycerol backbone is found in lipids known as glycerides. It is also widely used as a sweetener in the food industry and as a humectant in pharmaceutical formulations. Because of its three hydroxyl groups, glycerol is miscible with water and is hygroscopic in nature.
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Names | |||
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Preferred IUPAC name
Propane-1,2,3-triol | |||
Other names
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Identifiers | |||
3D model (JSmol) |
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ChEBI | |||
ChEMBL | |||
ChemSpider | |||
DrugBank | |||
ECHA InfoCard | 100.000.263 | ||
E number | E422 (thickeners, ...) | ||
KEGG | |||
PubChem CID |
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UNII | |||
CompTox Dashboard (EPA) |
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SMILES
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Properties | |||
C3H8O3 | |||
Molar mass | 92.094 g·mol−1 | ||
Appearance | Colorless hygroscopic liquid | ||
Odor | Odorless | ||
Density | 1.261 g/cm3 | ||
Melting point | 17.8 °C (64.0 °F; 290.9 K) | ||
Boiling point | 290 °C (554 °F; 563 K) | ||
miscible | |||
log P | −2.32 | ||
Vapor pressure | 0.003 mmHg (0.40 Pa) at 50 °C | ||
Magnetic susceptibility (χ) |
−57.06×10−6 cm3/mol | ||
Refractive index (nD) |
1.4746 | ||
Viscosity | 1.412 Pa·s (20 °C) | ||
Pharmacology | |||
A06AG04 (WHO) A06AX01 (WHO), QA16QA03 (WHO) | |||
Hazards | |||
NFPA 704 (fire diamond) |
1
1
0 | ||
Flash point | 160 °C (320 °F; 433 K) (closed cup) 176 °C (349 °F; 449 K) (open cup) | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) | ||
REL (Recommended) |
None established | ||
IDLH (Immediate danger) |
N.D. | ||
Safety data sheet (SDS) | JT Baker ver. 2008 archive | ||
Supplementary data page | |||
Glycerol (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references |
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