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Glyceryl triacetate

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Glyceryl triacetate is a widely used ingredient in cosmetics, personal care, and skincare formulations. Depending on its function, it may serve as a moisturizer, preservative, emulsifier, or active ingredient to enhance the overall effectiveness and performance of a product.

Glyceryl triacetate (Wikipedia)

Triacetin is the organic compound with the formula C3H5(OCOCH3)3. It is classified as a triglyceride, i.e., the triester of glycerol with acetic acid. It is a colorless, viscous, and odorless liquid with a high boiling point and a low melting point. It has a mild, sweet taste in concentrations lower than 500 ppm, but may appear bitter at higher concentrations. It is one of the glycerine acetate compounds.

Triacetin
Skeletal formula of triacetin
Ball-and-stick model of the triacetin molecule
Names
Systematic IUPAC name
Propane-1,2,3-triyl triacetate
Other names
  • Glycerol triacetate
  • glycerin triacetate
  • 1,2,3-triacetylglycerol
  • 1,2,3-triacetoxypropane
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.775 Edit this at Wikidata
EC Number
  • 203-051-9
E number E1518 (additional chemicals)
KEGG
RTECS number
  • AK3675000
UNII
  • InChI=1S/C9H14O6/c1-6(10)13-4-9(15-8(3)12)5-14-7(2)11/h9H,4-5H2,1-3H3 checkY
    Key: URAYPUMNDPQOKB-UHFFFAOYSA-N checkY
  • InChI=1/C9H14O6/c1-6(10)13-4-9(15-8(3)12)5-14-7(2)11/h9H,4-5H2,1-3H3
    Key: URAYPUMNDPQOKB-UHFFFAOYAH
  • CC(=O)OC(COC(=O)C)COC(C)=O
Properties
C9H14O6
Molar mass 218.205 g·mol−1
Appearance Oily liquid
Density 1.155 g/cm3
Melting point −78 °C (−108 °F; 195 K)
at 760 mmHg
Boiling point 259 °C (498 °F; 532 K)
at 760 mmHg
6.1 g/100 mL
Solubility Miscible in EtOH
Soluble in C6H6, (C2H5)2O, acetone
Vapor pressure 0.051 Pa (11.09 °C)
0.267 Pa (25.12 °C)
2.08 Pa (45.05 °C)
ln(P/Pa)=22.819-4493/T(K)-807000/T(K)²
1.4301 (20 °C)
1.4294 (24.5 °C)
Viscosity 23 cP (20 °C)
Thermochemistry
389 J/mol·K
458.3 J/mol·K
−1330.8 kJ/mol
4211.6 kJ/mol
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
1
0
Flash point 138 °C (280 °F; 411 K)
430 °C (806 °F; 703 K)
Explosive limits 7.73%
Lethal dose or concentration (LD, LC):
1100 mg/kg (mice, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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