Triacetin
Triacetin is an organic compound with the molecular formula of C9H14O6 , a colorless, odorless oily liquid, miscible with ethanol, ether , chloroform and benzene , and slightly soluble in water and carbon disulfide . Used as cigarette filter binder and flavor fixative , solvent, toughening agent . And can be used in cosmetics, casting, medicine, dyes and other industries. This product is non-toxic and non-irritating.
Basic Information
English alias: 1,2,3-Propanetriol triacetate; Glycerol Triacetate, USP Grade(1.03000); TRIACETINE; Glycerol triacetate; Glyceryl triacetate; propane-1,2,3-triyl triacetate
Molecular formula: C9H14O6
Molecular weight: 218.20
Appearance transparent oily liquid
Ester content,% ≥ 99.0
Free acid (calculated as acetic acid),% ≤ 0.03
Moisture,% ≤ 0.15
Color (platinum cobalt colorimetric), No. ≤ 25
Properties and uses
Description of properties: Colorless oily liquid. The melting point is 3°C, the boiling point is 258-259°C, 130.5°C (0.39kPa), the relative density is 1.1596 (20/4°C), the refractive index is 1.4301 , and the flash point is 148.8°C. It is miscible with ethanol, ether , chloroform and benzene , slightly soluble in water and carbon disulfide , and has a solubility in water of 5.9g/100ml at 25°C, with a bitter taste.
production methods : derived from glycerol and acetic acid esterification . After preheating the glycerol to 50-60°C, add acetic acid; benzene and sulfuric acid. Heating, stirring and refluxing for dehydration, recovery of benzene after dehydration, adding acetic anhydride , and heating for 4 h. After cooling, neutralize the pH to 7 with 5% sodium carbonate , separate the aqueous layer, and dry the crude oil with calcium chloride . Distill under reduced pressure , collect 128-131 ℃ (0.93kPa) fraction, which is triacetin.
Uses: Used as spice fixative , solvent, toughening agent . It is used in cosmetics; the production of medicines and dyes, as a plasticizer for cigarette filter rods, etc.
