The by-product of alcohol fermentation (the higher the percentage of sugar in the must, the more glycerol produces yeast during fermentation). He adds the viscosity to the wine.
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. Because it has antimicrobial and antiviral properties, it is widely used in wound and burn treatments approved by the U.S. Food and Drug Administration. Conversely, it is also used as a bacterial culture medium. Its presence in blood can be used as an effective marker to measure liver disease. 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
Glycerin
Glycerine 1,2,3-Trioxypropane 1,2,3-Trihydroxypropane 1,2,3-Propanetriol | |||
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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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 | ||
−57.06×10−6 cm3/mol | |||
Refractive index (nD)
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1.4746 | ||
Viscosity | 1.412 Pa·s (20 °C) | ||
Pharmacology | |||
A06AG04 (WHO) A06AX01 (WHO), QA16QA03 (WHO) | |||
Hazards | |||
NFPA 704 (fire diamond) | |||
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)
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TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) | ||
REL (Recommended)
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None established | ||
IDLH (Immediate danger)
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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).
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