Glyceryl diacetate

Glyceryl diacetate is a food additive with the E number E1517.[1] This diglyceride is more generally known as diacetin. It is the diester of glycerol and acetylating agents, such as acetic acid and acetic anhydride.[2] It is a colorless, viscous and odorless liquid with a high boiling point. Glycerol diaceate is typically a mixture of two isomers, 1,2-glyceryl diacetate and 1,3-glyceryl diacetate.[3]

Glyceryl diacetate

1,2-glyceryl diacetate 1,3-glyceryl diacetate
Names
Other names Diacetin; Glycerol diacetate
Identifiers
CAS Number	25395-31-7 (mixture)^Y 102-62-5 (1,2)^Y 105-70-4 (1,3)^Y
3D model (JSmol)	Interactive image
ChemSpider	59412 (1,2) 60286 (1,3)
ECHA InfoCard	100.042.659
EC Number	246-941-2
E number	E1517 (additional chemicals)
PubChem CID	66021 (1,2) 66924 (1,2)
RTECS number	AK3325000
UNII	GJ0544W99Q (mixture)^Y 9W955270ZW (1,2)^Y G45CU3Z186 (1,3)^Y
CompTox Dashboard (EPA)	DTXSID5041223
InChI InChI=1S/C7H12O5/c1-5(9)11-4-7(3-8)12-6(2)10/h7-8H,3-4H2,1-2H3 Key: UXDDRFCJKNROTO-UHFFFAOYSA-N
SMILES CC(=O)OCC(CO)OC(=O)C
Properties
Chemical formula	C7H12O5
Molar mass	176.168 g·mol^−1
Melting point	−30 °C (−22 °F; 243 K)
Boiling point	280 °C (536 °F; 553 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

See also

• Glycerine acetate
• Triacetin

References

1. "Call for food additives usage level and/or concentration data in food and beverages intended for human consumption (Batch 7)". EFSA. Retrieved 1 October 2018.
2. Kong, P. S.; Aroua, M. K.; Daud, W. M. A. W.; Lee, H. V.; Cognet, P.; Peres, Y. (2016). "Catalytic role of solid acid catalysts in glycerol acetylation for the production of bio-additives: a review". RSC Advances. 6 (73): 68885–68905. doi:10.1039/C6RA10686B.
3. Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health