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Polyvinylchloride (PVC) : Citrate Plasticizers
Citrates are specialty plasticizers that offer better biodegradability and
less biochemical affects, and thus found applications in PVC blood
bags; controlled release pharmaceutical drugs, gums, products that
comes contact with food such as food wrap etc. Wide varieties of citrate
based plasticizers are developed over the years.

Examples of commercially available citrates and their primary uses are
discussed here.
Triethyl citrate (TEC) - food additive, Plasticizer for food wraps
Basic structure of Triethyl citrate (TEC)
Acetyl triethyl citrate (ATEC) - plasticizer for food wraps, aerosol
hair spays, bandages
Basic structure of Acetyl triethyl citrate (ATEC)
Acetyl tributyl citrate (ATBC) - plasticizer for food wraps, aerosol
hair spays, bandages
Other Citrate Plasticizers
Tributyl citrate (TBC)-
Trioctyl citrate (TOC),
Acetyl trioctyl citrate (ATOC
Trihexyl citrate (THC),
Acetyl trihexyl citrate (ATHC),
and Trimethyl citrate (TMC).