Tetrasodium Pyrophosphate (TSPP)
Molecular formula：Na4P2O7
Molecular weight： 265.9
CAS No.: 7722-88-5
Properties:
White powder; Soluble in water but insoluble in ethanol; Relative density 2.45 and melting point 890 ; Deliquescent in the open air. Its aqueous solution shows weak alkalinity and is stable at 70 but will be hydrolyzed into di-sodium phosphate when boiled .
Uses:
Applied in industries of detergents as detergent auxiliary, paper production to bleach and electroplating etc.
Packing and storage:
Packed in 25 Kg, 50 Kg or 1000 Kg net bags. It must be stored in places well ventilated and dry.
Specification:
|
NO
|
Indexes
|
|
Tech Grate
|
|
1
|
Appearance
|
|
|
|
2
|
Assay%≥
|
|
96
|
|
3
|
Iron(Fe) %≤
|
|
0.05
|
|
4
|
Water insoluble matter %
|
|
0.2
|
|
5
|
Heavy Metals(as Pb)%
|
|
|
|
6
|
Arsenic(As)% ≤
|
|
|
|
7
|
PH Value
|
|
|
|
8
|
Ortho Phosphate
|
|
|
