Glutaric anhydride is also known as gluconic anhydride, or GA. Glutaric anhydride is a needle, the proportion is 1.429, melting point 41 ~ 56, boiling point 287, soluble in ether, ethanol tetrahydrofuran, etc. After absorbing water, it is diacid. By glutaric nitrile react with hydrochloric acid to rise into glutaric acid and ammonium chloride, pure glutaric acid, was again in 300 ℃ dehydration system of glutaric anhydride.

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