Benzyl butyl phthalate is used as a plasticizer for polyvinyl chloride in vinyl floor tiles, vinyl foam and carpet backing, in cellulosic resins, and as an organic intermediate. It has also been used as a solvent and fixative in perfume. It is a colorless and odorless organic chemical. Exposure to benzyl butyl phthalate occurs during its production and use as a plasticizer, mainly in polyvinyl chloride products. It has been detected at low levels in indoor air, water, and a few foods. Benzyl butyl phthalate is classified as a substance toxic to reproduction. It demonstrated estrogen and anti-androgen activity. Prenatal exposure to phthalates could lead to smaller penis size and incomplete descent of testicles in baby boys.