TSPP Tetra Sodium Pyrophosphate
Cas No.: 7722-88-5
Molecular formula: Na4P2O7
Specification:
Item |
Standard |
Packing |
Tech. Grade |
Food grade |
Content |
96.5%min |
96.5%min |
25kg/bag |
P2O5 |
51.50%min |
51.50%min |
PH of 1% water solution |
9.9-10.7 |
9.9-10.7 |
Fineness (through
60 mesh) |
90%min |
90%min |
Heavy metals, as Pb |
--- |
0.001%max |
Arsenic, as As |
--- |
0.0003%max |
Fluoride as F |
--- |
0.005%max |
Water insoluble |
0.10%max |
0.10%max |
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 |
Application |
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. |
|
