Description
The diester of glycerol with two acetic acid molecules, used as a flavor and fragrance solvent, food-grade plasticizer, and humectant in confectionery and tobacco applications.
Clear, almost colorless oily liquid. Mild characteristic odor. Miscible with water at limited concentration, fully miscible with ethanol, ethyl acetate, and most polar organic solvents.
We supply Food-Grade Glycerol Diacetate from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production.
Common market grades include food-grade for flavor and fragrance carrier use, technical grade for industrial solvent applications, and specialty mixtures with mono- and triacetin for tuned solvent properties.
Bulk and reduced-MOQ shipments. Batch-level COA covering assay, water content, acidity, residual glycerol and monoacetin, and microbiology.
Introduction
Glycerol diacetate is the partially esterified intermediate between monoacetin (glycerol monoacetate) and triacetin (glycerol triacetate). All three glycerol acetates are produced by esterification of glycerol with acetic acid or acetic anhydride.
Production is by direct esterification of glycerol with acetic acid under acid catalysis, with stoichiometry controlled to favor the diester. The product is then neutralized, dried, and distilled to remove residual glycerol, monoacetin, and triacetin.
Regulated as E1517 in the EU, recognized as Generally Recognized as Safe by the U.S. FDA, and approved by JECFA without a numerical Acceptable Daily Intake limit when used in defined applications.
Among the three glycerol acetates, the diester is the least widely traded but holds a defined niche in flavor and fragrance carrier applications where its specific polarity and viscosity profile suit the dissolution and dispensing requirements of compounded flavor systems.
Where it is used
- Flavor and fragrance carrier solvent in confectionery and beverage flavor systems
- Tobacco humectant and binder in cigarette specifications
- Food-grade plasticizer for film and packaging coatings
- Cosmetic and personal-care emollient and solvent
- Pharmaceutical excipient and flavor solubilizer
- Industrial solvent for resins, dyes, and intermediates
- Polymer plasticizer for cellulose acetate and other biodegradable plastics
Technical data
| Item | Specification |
|---|---|
| Appearance | Clear, almost colorless oily liquid |
| Assay (diacetin) | ≥ 90.0% |
| Refractive index (20 °C) | 1.439 to 1.444 |
| Specific gravity (20 °C) | 1.175 to 1.190 |
| Water (Karl Fischer) | ≤ 0.5% |
| Acidity (as acetic acid) | ≤ 0.1% |
| Free glycerol | ≤ 2.0% |
| Monoacetin and triacetin | ≤ 10.0% combined |
| Heavy metals (as Pb) | ≤ 2 mg/kg |
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