| Chemistry name: | disodium pyrophosphate; sodium acid pyrophosphate; disodium diphosphate; disodium dihydrogen pyrophosphate; SAPP |
| M Formula: | Na2H2P2O7•6H2O |
| Properties: | |
| White, crystalline powder. Mp (decomposes) 220C, d 1.862. Soluble in water. | |
| Derivation: | |
| Incomplete decomposition of monobasic sodium phosphate. | |
| Grade: | |
| Technical, food, FCC. | |
| Use: | |
| Electroplating, metal cleaning and phosphatizing, drilling muds, baking powders and leavening agent, buffer, sequestrant, peptizing agent in cheese and meat products, frozen desserts. | |