Bis phthalate, also called di-2-ethylhexyl phthalate, diethylhexyl phthalate, and incorrectly called dioctyl phthalate, is an organic compound with the formula C6H42. DEHP is the most common member of
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.