SODIUM CITRATE (trisodium citrate) C6 H5 O7 N3 a · 2HOH CAS: 68-04-2 Properties:  White crystals or granular powder, odorless, stable in air, pleasant acid tast, soluble in water, insoluble in alcohol, mp loses 2HOH at 150C, bp decomposes at red heat.  Combustible. Derivation:  Sodium sulfate solution is treated with calcium citrate, filtered, concentrated and crystallized.   Grade:  Highest purity, medicinal; pure; commercial; CP; USP; FCC. Use:  Soft drinks, photography, frozen desserts, meat products, detergents, special cheeses, electroplating, sequestrant and buffer, nutrient for cultured buttermilk, removal of sulfur dioxide from smelter waste gases, medicine (diuretic, expectorant), anticoagulant for blood withdrawn from body.