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