Quality Standards:content: 98.5%; S: 1ppm Property and Purpose: diisobutyl phthalate is slightly soluble in water, and soluble in cellulose acetate, cellulose acetate butyrate, cellulose nitrate, ethyl cellulose, polyvinyl chloride, polyvinyl acetate, polyvinyl butyral polystyrene and other resins, mainly used as plasticizers.