Na4P2O7 CAS 7722-88-5 Tetrasodium Pyrophosphate
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China [CN] Food used Tetrasodium Pyrophosphate, Na4P2O7
Chemical name:Tetrasodium Pyrophosphate
Other name:TSPP,Sodium pyrophosphate anhydrous,Sodium diphosphate tetrabasic
Molecular Formula: Na4P2O7
Molecular weight:265.9
Cas no:7722-88-5
Properties:White powder, easily soluble in water but insoluble in ethanol; Density at 2.45g/cm³ and melting point at 890℃; Deliquescent in the open air. The water solution shows weak alkalinity and stable at 70℃, but will be hydrolyzed into disodium phosphate when boiled.
Applicant:applied in industries of detergents as detergent auxiliary, paper production to bleach and electroplating; In food industry it is used as buffering agent, emulsifier, nutrition ingredients and quality improver.
Packing:packed in 25kgs PP/PE bags.
Specification:
| NO | Specifications | Industrial Grade | FoodGrade |
| 1 | Assay (as Na4P2O7 )% | 96.5 MIN | 96.5 MIN |
| 2 | P2O5 %≥ | 51.5 | 51.5 |
| 3 | Ortho Phosphates | Pass | Pass |
| 4 | PH Value | 9.9-10.7 | 9.9-10.7 |
| 5 | Water Insoluble matter % ≤ | 0.2 | 0.2 |
| 6 | Size (through 60mesh sieve) | 90% Min. | 90% |
| 7 | L.O.I. % ≤ | 0.5 | |
| 8 | (As F)%≤ | 0.005 | |
| 9 | (As As)%≤ | 0.0003 |
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