Triacetin USP/Ph.Eur 2.5LT Go Back


: 102-76-1

Molecular Formula

: C9H14O6

Molecular Weight

: 218.21
Appearance/Description: Clear, colourless, slightly viscous oily liquid, Fatty odour not more intensely coloured than reference solution Y6
Solubility: Soluble in water, miscible with ethanol (96%), toluene alcohol, ether, and with chloroform
Boiling point: About 260°C.
Identification (By IR): IR spectra of the sample should be concomitant with IR spectra of the corresponding standard.
Identification (By GC): The retention time of the triacetin peak of the sample solution corresponds to that of the standard, as obtained in the assay.
Acidity: The pink color of the mixture should persist for 15 S
Relative density, 20°C: 1.159-1.164
Refractive index (20°C ± 0.5°C): 1.429-1.432
Assay (On anhydrous basis , by GC): NLT 97.0% and NMT 102.0%
Organic impurities: Acetic acid: NMT 0.1%
Organic impurities: Glycerol: NMT 0.1%
Organic impurities: 1-Monoacetin: NMT 0.1%
Organic impurities: 2-Monoacetin: NMT 0.1%
Organic impurities: 1,3-Diacetin: NMT 0.1%
Organic impurities: 1,2-Diacetin: NMT 0.1%
Organic impurities: Individual, unspecified impurity: NMT 0.1%
Organic impurities; Total impurities: NMT 0.2%
Water: NMT 0.2%
Assay (By Titration): 97.0% - 100.5%
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