Trisodium citrate dihydrate, also known as sodium citrate, is an organic compound that has white to colorless crystals. Odourless, with a cool salty taste. Stable in room temperature and air, slightly soluble in wet air, weathering in hot air. Lose crystal water heated to 150 ℃. It is easily soluble in water, glycerol, alcohol and other organic solvents. It is decomposed by overheating, slightly deliviate in humid environment and slightly weathering in hot air.

Items	Standard
Appearance	White crystals or crystalline powder
Odor	Characteristic
Clarity and color of Solution	Conforms
Loss on drying	11.0 - 13.0%
Usage	acidity regulator etc.
Pb	< 10ppm
Assay	99.0 - 101.0%
Chemical formula	C6H5­O7Na3.2H2O
Sulfate (SO4)	150 ppm max
Chloride (Cl)	50 ppm max
Alkalinity	Conforms
Oxalate	300 ppm max
Storage	in the shade cool

Sodium citrate is used as acidity regulator, flavor agent and stabilizer in food and beverage industry. Used as an anticoagulant, phlegm dispersant and diuretic in the pharmaceutical industry; In detergent industry, sodium tripolyphosphate can be substituted as non-toxic detergent additive. It is also used in brewing, injection, photographic medicine and electroplating.