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 diacetate is typically a mixture of two isomers, 1,2-glyceryl diacetate and 1,3-glyceryl diacetate.