Differences in properties between decahydrate pyrophosphate and anhydrous sodium pyrophosphate

Generally speaking, sodium pyrophosphate refers to sodium pyrophosphate decahydrate.

Molecular weight of Na4P2O7 sodium pyrophosphate 265.90

White crystalline powder. The density is 2.534g/cm3. Melting point 880 C. It is soluble in water, alkaline in aqueous solution and insoluble in alcohol. Complexes with alkaline earth metal salts. It is easy to absorb moisture and deliquescence in the air. Sodium pyrophosphate decahydrate is used in electroplating industry to prepare electroplating bath, which can form a complex with iron. Wool textile industry is used as wool degreaser and bleaching agent. The paper industry is used to bleach paper and plant fibers. Printing and dyeing industry is used as auxiliaries in printing and dyeing and bleaching. As toothpaste additive, daily chemical industry can form colloid with calcium hydrogen phosphate and play a stabilizing role. It can also be used to synthesize detergent and produce shampoo and other products. As a water softener in water treatment. As a rust remover in mechanical processing. It is used as dispersant and emulsifier in chemical production.

The molecular weight of anhydrous sodium pyrophosphate Na4P2O7 is 265.90

White powder or crystallization. Melting point 880 C. The density was 2.534g/cm3. Soluble in water. It is insoluble in alcohol. Its aqueous solution is alkaline. The water solution is stable at 70 C and hydrolyzes to disodium hydrogen phosphate when boiling. It can form complex with alkaline earth metal ions and white silver pyrophosphate when it meets Ag+. Easy to deliquescence. Phosphoric acid and soda are neutralized to form disodium hydrogen phosphate, which is then prepared by heating in a fluidized bed polymerization furnace. It can be used as synthetic detergent and auxiliaries in dyeing, finishing and bleaching. It is used to prepare dispersants, emulsifiers, wool degreasers, plant fiber bleaching agents, and raw materials for the production of other pyrophosphates.

Zhengzhou Yucai Phosphate Chemical Plant specializes in producing: sodium hexametaphosphate, sodium pyrophosphate, sodium tripolyphosphate, disodium hydrogen phosphate, industrial phosphoric acid, trisodium phosphate, aluminium dihydrogen phosphate, solid aluminium dihydrogen phosphate, liquid aluminium dihydrogen phosphate, sodium dihydrogen phosphate and other phosphate products after more than 30 years of continuous pursuit and development, relying on skilled chemical technology and product development, equipment updating and many other phosphate products. Colleges and universities have established a good cooperative and sharing relationship, playing a brand (Yucai Phosphate) in the chemical industry!