DI-BUTYL PHTHALATE(DBP) Formula: C6H4(COOC4H9)2 M.W.: 278.17 Specifications: Color(APHA) 25 max Ester content 99.0%min Acid number mg KOH/g 0.1max Specific gravity (20/20oC) 1.044-1.048 Heating loss (125oC, 3hr) 0.5%max Flash point(open cup) 160oCmin Packing: In 200 kg net iron drum. di-butyl phthalate(CAS No. 84-74-2).