Maleic Anhydride

[108-31-6] C4H2O3 (MW 98.06) InChI = 1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H InChIKey = FPYJFEHAWHCUMM-UHFFFAOYSA-N (reactive dienophile and dipolarophile; undergoes thermal and photochemical [2 + 2] cycloadditions; alkylating and acylating agent) Alternate Name: MA. Physical Data: mp 54–56 °C; bp 200 °C; d 1.314 g cm−3. Solubility: sol ether, acetone, chloroform, ethyl acetate, benzene, toluene, carbon tetrachloride, petroleum ether, dioxane. Form Supplied in: white solid; widely available. Drying: at 100 °C. Purification: recrystallization from acetone/petroleum ether or from hot water. Alternatively sublimed. Handling, Storage, and Precautions: toxic, an irritant, and corrosive. Avoid inhalation. Store in a tightly sealed brown bottle; avoid exposure to moisture.