Is tetrasodium pyrophosphate/TSPP the same as sodium pyrophosphate decahydrate?
Sodium pyrophosphate usually exists in two forms, decahydrate and anhydrous. When you buy tetrasodium pyrophosphate/TSPP, you have to distinguish what kind of sodium pyrophosphate you need from sodium pyrophosphate decahydrate. Tetrasodium pyrophosphate is more widely used. Food grade sodium pyrophosphate is a common legal food additive in food, while industrial grade sodium pyrophosphate/TSPP is widely used in water treatment, printing and dyeing, washing and other industries. Na4P2O7.10H2O, molecular formula of sodium pyrophosphate decahydrate, relative molecular weight 446.07, decahydrate is colorless or white crystalline or crystalline powder. Tetrasodium pyrophosphate/TSPP molecular formula Na4P2O7, relative molecular weight 265.90, anhydrous substance is white powder, soluble in water, insoluble in ethanol and other organic solvents. The quality requirement of sodium pyrophosphate is relatively high. The sodium pyrophosphate of Chuandong Chemical Group uses hot acid as raw