Sodium pyrophosphate, also known as tetrasodium diphosphate and tetrasodium phosphate, is divided into anhydrous and decahydrate. The decahydrate is colorless or white crystal or crystalline powder, and the anhydrous is a white powder, soluble in water, but insoluble in ethanol and other organic solvents.
Main purposes
It is used in the electroplating industry to prepare electroplating solutions and can form complexes with iron. In wool spinning industry, it is used as wool degreasing agent and wool bleaching agent. Used in the paper industry for bleaching paper and plant fibers. In the printing and dyeing industry, it is used as an additive in printing, dyeing and fine bleaching. In the daily chemical industry, it is used as a toothpaste additive. It can form a colloid with calcium hydrogen phosphate and play a stabilizing role. It can also be used to synthesize detergents and produce shampoo and other products. Sodium pyrophosphate Dow Corning emulsion not only has the function of softening water, but also can redissolve insoluble salts of calcium and magnesium. For example, if dirt mixed with insoluble calcium soap or other metal soaps in clothing fibers can redissolve it and improve Decontamination ability. In addition, sodium pyrophosphate has the effect of deflocculation and emulsification of oil and fat, which is called peptizing property. It can also further reduce the surface tension and interfacial tension of the surfactant solution and play a role in washing. Used as a rust remover in machining. Used as dispersant and emulsifier in chemical production. It can also be used as water treatment agent as water softener, oil drilling, etc.
Uses in food
In the food industry, it is used as a quality improver, emulsifier, buffer, chelating agent, etc. 1. In the food industry, it is used as a food quality improver, PH regulator, metal ion chelating agent, emulsifying dispersant, adhesive, etc., mainly used in meat and aquatic product processing to improve PH value and water holding capacity, and keep meat fresh and tender. Stabilize natural pigments and prevent fat spoilage; 2. Used in pasta to enhance the processing performance of pasta and improve the quality of pasta; 3. Used as a quality improver in cans, juice drinks, and dairy products; 4. Used to avoid discoloration of fruits after processing Phenomenon; 5. In addition, it can also be used as an egg cleaning fluid, an emulsifier for cheese, and an additive for soy sauce and soy milk.
