Product name: succinic anhydride Cas no.:108-30-5 Einecs no.:203-570-0 Synonym name:2, 5-dioxotetrahydrofuran; dihydro-2, 5-diketotetrahydrofuran; dihydro-2, 5-furandione; butanedioic anhydride; succinic acid anhydride; succinyloxide; tetrahydro-2, 5-dioxofuran; saa; dihydrofuran-2, 5-dione; 4, 4'-oxybis(4-oxobutanoic acid) Appearance: white flake and brown flake Grade: electronic grade(99.9%min), pharma grade(99.0%min) and industrial grade(98.0%min) Use:mainly used in medicine, such as fenbufen/lederfen, vitamin a ect; resin ; coating ; electric industrial; plasticizer & adhesive ect. Free sample is available.