Carbic anhydride CAS 129-64-6

Norbornene dianhydride has an irritating effect on skin and mucous membranes. Norbornene diacid anhydride reacts with water to form the corresponding acid. Norbornoleic anhydride precipitated from petroleum ether is orthomorphic white columnar crystal with delixability and melting point 164 ~ 165℃. Slightly soluble in petroleum ether, soluble in benzene, toluene, acetone, carbon tetrachloride, chloroform, ethanol, ethyl acetate. When heated beyond its melting point, it is transformed into a cis-balanced mixture.