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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
Manufacturing
