Trisodium Citrate Dihydrate(C6H5Na3O7•2H2O) is an organic compound with a white to colorless crystal appearance. Trisodium Citrate Dihydrate characteristics： (1) Safe and non-toxic performance.  (2) It is biodegradable.  (3) Excellent solubility, and the solubility increases with the increase of water temperature. (5) Good pH adjustment and buffering performance. Sodium citrate is a weak acid and strong alkali salt, which can form a strong pH buffer when combined with citric acid. Application of sodium citrate: -Sodium citrate is non-toxic, has pH regulation properties and good stability, so it can be used in the food industry. Mainly used as flavoring agent, buffer agent, emulsifier, expansion agent, stabilizer and preservative, etc. In addition, sodium citrate is compatible with citric acid, used as a variety of jams, jelies, fruit juices, drinks, cold drinks, gelling agent, nutrient supplement and flavor agent.-In medicine, sodium citrate can be used as an anticoagulant and blood transfusion agent, preservation and processing of blood products.-Sodium citrate has good water solubility, so it is gradually becoming a substitute for sodium tripolyphosphate, which is used to produce phosphate-free laundry detergent, especially phosphate-free liquid detergent. Adding a certain amount of sodium citrate to the detergent can obviously increase the decontamination ability of the detergent.