Citric Acid → HCID 86749178, compound

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Reaction Steps

Monoammonium maleate (2,627 g of 94% concentration wet salt, 0.0186 mole) and citric acid (0,395 g, 0.0021 mole) were ground together and thoroughly mixed to form a slightly wetted mass. This mixture was placed in the aluminum reaction vessel to form a layer and then was heated at about 240°-260° C. for 40 minutes in a convection oven. The resulting product was a red-brown solid foam, weight 1.991 g, representing 92% theoretical yield of polysuccinimidecitric acid copolymer. Hydrolysis of this product with sodium hydroxide at room temperature produced an aspartic acid-citric acid copolymer having molecular weights by GPC of Mw 1196, Mn 613, Mw/Mn 1.95.

Provenance & Evidence