Zinc citrate dihydrate, CAS 5990-32-9

Zinc citrate is a zinc salt of citric acid (2-hydroxy-1,2,3-propanetricarboxylic acid); a C6 tricarboxylic acid. Zinc citrate is an odorless, white granular or crystalline powder, and is slightly soluble in water. It exists as a dihydrate and trihydrate forms. As an organic zinc salt, zinc citrate is known for its high zinc content (ca. 31%). Compared with other zinc salts, such as chloride, sulfate, phosphate, nitrate, etc., citrate shows superior biological compatibility. In biochemical processes, zinc acts as an essential trace element that has a critical role in maintaining structural and catalytic functions of >200 enzymes involved in major metabolic pathways. Exemplary applications of zinc citrate are substitute for zinc sulfate, antioxidant, odor neutralizer, dye mordant, feed additive, wood preservative, etc.