Acetyltriethyl citrate is used in oral pharmaceutical formulations
and is generally regarded as a nontoxic and nonirritating material.
However, ingestion of large quantities may be harmful.
LD50 (cat, oral): 8.5 g/kg
LD50 (mouse, IP): 1.15 g/kg
LD50 (rat, oral): 7 g/kg
Approved in the USA for direct food contact in food films.
Acetyltriethyl citrate is prepared by the esterification of citric acid
with ethanol followed by acylation with acetic anhydride.
Acetyltriethyl citrate occurs as a clear, odorless, practically colorless
Acetyltriethyl citrate should be stored in dry, closed containers at
temperatures not exceeding 388℃. When stored in accordance with
these conditions, acetyltriethyl citrate is a stable product.
ATEC is produced by the reaction of citric acid triethyl ester
with acetic acid anhydride. It is used as a solvent plasticizer
for cellulose nitrate and cellulose acetate.
Acetyltriethyl citrate is incompatible with strong alkalis and
Acetyltriethyl citrate is used to plasticize polymers in formulated
pharmaceutical coatings. The coating applications include
capsules, tablets, beads and granules for taste masking, immediate
release, sustained-release and enteric formulations. It is also
used in diffusion-controlled release drug delivery systems.
Aqueous-based pharmaceutical coat-