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1. Properties
Tetrasodium pyrophosphate, also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is a colorless transparent crystalline chemical compound with the formula Na4P2O7. It contains the pyrophosphate ion and sodium cation. Toxicity is approximately twice that of table salt when ingested orally. There is also a hydrated form, Na4P2O7 · 10(H2O).
2.Usage
Sodium pyrophosphate is used as detergent, pharmaceutical and toothpaste stabilizer, water softener, boiler antiscaling agent, metal ion chelant, and also used in electroplating, electrolysis, plant fiber blenching, etc.
3.Specification
Executive standard: HG/T 2968-2009
| Item | Index | |
| Sodium pyrophosphate anhydrous | Tetrasodium pyrophosphate decahydrate | |
| Main contentw/% ≥ | 96.5 | 98.0 |
| Water insoluble matter w/% ≤ | 0.2 | 0.10 |
| pH value (10g/L solution) | 9.9-10.7 | |
| Orthophosphate | Passes the test | |
4. Transportation and storage
Avoid rain and sunlight during the transporation, keep in dry and ventilated warehouse, to protect with under layer to prevent damp.
5.Package
The product is packed with polyethylene film two-layer bag, and the external is plastic woven bag, net weight 25kg per bag. The internal bag should be tied tightly; and the external bag should be closely stitched. In case of any special requirement, negotiation
is required.
96.5% sodium pyrophosphate TSPP as bleach of paper making
