Sodium salt

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TETRA SODIUM PYROPHOSPHATE (TSPP)

Guaranteed Technical Specifications

Chemical formula: Na4P2O7 
Standard executed: HG/T2968-1988
Throughput: 5000t/a

Properties

White powder, easily soluble in water, density at 2.45, melting point at 890℃, its water solution is alkaline, PH value in 1% solution is 9.9~10.7 

Uses

Mainly used as detergent in washing, bleach in paper-making, and electroplating, etc. For food grade it is mainly used as food additive, buffering agent, emulsification agent, and nourishment, and modifying agent, etc.

Packing and storage

Plastic-woven sack with polythene inner bag, net weight at 25kg, 50kg or 1000kg. Store at a ventilated, dry place.

  • Other Parameters

序號 No
指標名稱 Specifications
工業級 Industrial grade
食品級 Food grade
1  
主含量(以Na4P2O7計)%≥ Main contents
96.5
96.5
2
五氧化二磷(以P2O5計)%≥ Phosphorus pentoxide
51.50
51.50
3
正磷酸鹽 Phosphate
符合檢驗 Qualified
符合檢驗 Qualified
4
PH值(1%水溶液) PH value of 1% solution
9.9—10.7
9.9-10.7
5
細度(通過60目篩)%≥ Fineness (through 60 mesh)
90  
90
6
重金屬(以Pb計)%≤ Heavy metals, as Pb
0.001
7
砷(以As計)%≤ Arsenic, as As
0.0003
8
氟化物(以F計)%≤ Fluoride as F
0.005
9
水不溶物%≤ Water insoluble
0.10
0.10

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