Specification Property                     Specification                 Analytical Method
diisobutyl phthalate, Min by wt.               99.5%                  gaschromatography
acidity  mg/g max by wt                         0.10                      GB/T1668
flash point ℃  min by wt                        155                        GB/T6489
relative density(20℃)                      1.037-1.044                   GB/T4472
loss on heating  max by wt                     0.2%                         GB/T11133
color (APHA)  max by wt                        30                       the method of pt-co