Specifications: Property: It is white grain or piece substance with pungent ordor. In open air it easily becomes. Into meleic acid which is rather corrosive. It dissolve in acetone, erher,ethyl acelate, etc. Usage: It used in production of unsaturated polyester resin. It also is used in coating, pharmaceutics, agricultural, surfactant, additive of plastics, etc. It is main material of binary acid with four carbons, 1,4-butanediol r-butyrolactone, tetrahydrofuran specification: Appearance white pastille purity(by MAN) wt% 99.5 min Melten Colour APHA 20max Solidifying point 52.4cmin Ash PPM 20max Iron PPM 5max