Dipropyl heptyl phthalate (DPHP) - 53306-54-0

Key Functions: Food Contact & Additives, Plasticizers & Polymer

DPHP is an ortho phthalate with a backbone of C7 branched with a propyl side chain. DPHP belongs to the High Molecular Weight Phthalate Esters (HMWPE) group, which are primarily used as industrial chemicals that are associated with polymers to impart flexibility in polyvinyl chloride (PVC) resins. They are also used as synthetic base stocks for industrial lubricating oils and compressor fluids. The United States Food and Drug Administration (U.S. FDA) has also approved DPHP for use in food packaging and handling. Typical concentrations of DPHP in end use products, including automobile undercoating, building materials, wires, cables, shoes, adhesives, pool liners, and gloves, range from 30 to 60%. In general DPHP is manufactured in a closed system by catalytically esterifying phthalic anhydride with isomeric decyl alcohols (CPSC 2019).

Chemical Synonyms 1,2-Benzenedicarboxylic acid, 1,2-bis(2-propylheptyl) ester; Bis(2-propylheptyl) phthalate; Bis-(2- propylheptyl) phthalate; EINECS 258-469-4 (ChemIDplus 2022).

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