Other names: Tetra-Sodium pyrophosphate; TSPP
CAS number: 7722-88-5
Molecular formula: Na4P2O7
Molecular Weight: 265.9
Characteristics:
Sodium pyrophosphate is a white powder; Soluble in water but insoluble in ethanol; Relative density 2.45 and melting point 890; Deliquescent in the open air. Its aqueous solution shows weak alkalinity and is stable at 70 but will be hydrolyzed into di-sodium phosphate when boiled.
Specification:
| Items |
Food Grade |
| Appearance |
white powder |
| Assay (as Na4P2O7 )% ≥ |
96.5 |
| P2O5 % ≥ |
51.5 |
| Ortho Phosphates |
Pass |
| PH Value |
9.9-10.7 |
| Water Insoluble matter % ≤ |
0.2 |
| Size (through 60mesh sieve) |
90% Min. |
| Loss on ignition % ≤ |
0.5 |
| (As F)% ≤ |
0.005 |
| (As As)% ≤ |
0.0003 |
Packing:
In 25kg pp woven bags with plastic liner.
Use:
Sodium pyrophosphate 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.
MSDS: Available when required.
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