Bis(2-ethylhexyl) phthalate
Bis(2-ethylhexyl) phthalate (di-2-ethylhexyl phthalate, diethylhexyl phthalate, diisooctyl phthalate, DEHP; incorrectly — dioctyl phthalate, DIOP) is an organic compound with the formula C6H4(CO2C8H17)2. DEHP is the most common member of the class of phthalates, which are used as plasticizers. It is the diester of phthalic acid and the branched-chain 2-ethylhexanol. This colorless viscous liquid is soluble in oil, but not in water.
PVC is used extensively in sewage pipe due to its low cost, chemical resistance, and ease of jointing. Phthalate plasticizers are essential for the utility of PVC, which is too brittle otherwise.
Phthalates, or phthalate esters, are esters of phthalic acid. They are mainly used as plasticizers, i.e., substances added to plastics to increase their flexibility, transparency, durability, and longevity. They are used primarily to soften polyvinyl chloride (PVC). Note that while phthalates are usually plasticizers, not all plasticizers are phthalates. The two terms are specific and unique and cannot be used interchangeably.
Plasticised PVC has excellent electrical insulation properties and is extensively used as sheathing for wires and cables.
Market trend in decreasing use of low orthophthalates including DEHP
Toy dolls manufactured in China and seized by U.S. Customs and Border Protection in 2013 due to high phthalate levels
Update on non-classified plasticisers and the European REACH Candidate Classification including pending authorisation
