Glutaric anhydride [ 108-55-4 ]

Purity: 98%, needle crystal. Soluble in ethanol and ethyl ether, THF. Used in plastics, rubber, resin, pharmaceutical and other production and amide preparation. E anhydride by hydrogen peroxide oxidation available peroxide e malonic acid. Will 420ml distilled water and 221.7 g30 % of hydrogen peroxide mixing, then add e 342g, acuteness mixing two anhydride, maintain at 15 ℃ reaction, add 7.6 g hydrogen peroxide continue to heat preservation 1 hour, quiet place 24h, filter out crystallization water after washing and drying, infrared lamp white powder peroxide into two acid, melting point 89-90 ℃ (90 ℃ start decomposing).