 Application grade: food grade
Content: 96.5(%)
Particle size: 100(mesh)
CAS RN: 7722-88-5
Executive standard: HG/T2968-1999
Brand: Junlin
Alias: Sodium pyrophosphate; Tetrasodium pyrophosphate; TSPP; Tetra Sodium Pyrophosphate; Tetrasodium Diphosohate
Molecular formula: Na4P2O7
Molecular weight: 265.90
CAS RN: 13472-36-1
Properties:
White powder or crystal. Relative density 2.534, melting point 880℃, boiling point 93.8℃, specific gravity 2.534. Colorless transparent crystal or white crystalline powder. Easily soluble in water, solution in 100g water at 20℃ is 6.23; insolule in alcohol. Aqueous solution is stable under 70℃.
Uses:
In electroplating industry, it can be used in preparing electroplate liquid; in textile industry, it can be used as wool degreasant and wool bleaching agent; in papermaking industry, it can be used in bleaching paper and plant fiber; in dyeing and printing industry, it can be used as auxiliary for printing and dyeing, and for refined bleaching, etc.
Quality specification: technical grade: HG/T2968－1999; upon customer's request
food grade: HG2923－1999; FCC; upon customer's request
| Item |
Index |
| Technical grade |
food grade |
| Na4P2O7 |
Na4P2O7·10H2O |
Na4P2O7 |
Na4P2O7·10H2O |
| superior product |
First-class product |
Qualified product |
| Main content, % ≥ |
97.5 |
96.5 |
95.5 |
98.0 |
96.5 ～ 100.5 |
98.0 |
| Content of water insoluble matter, % ≤ |
0.20 |
0.10 |
0.20 |
0.10 |
| PH value (10 g/L solution) |
9.9 ～ 10.7 |
9.9 ～ 10.7 |
| Orthophosphate |
accord with the test |
accord with the test |
| Arsenic (As) content, % ≤ |
— |
0.0003 |
| Heavy metal (Pb), % ≤ |
— |
0.001 |
| Fluoride (F) content, % ≤ |
— |
0.005 |
| Heating loss, % ≤ |
— |
0.50 |
38.0 ～ 42.0 |
Packing: 25Kg, 50Kg bag; packaging ton bag; upon customer's request
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