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Sodium pyrophosphate anhydrous

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
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℃.
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