[Specification]
1) Anhydrous Trisodium Phosphate
|
Item
|
Industrial Grade
|
Food Grade
|
|
Appearance:
|
White powder
|
White powder
|
|
Content (Na3PO4):
|
98%min
|
98%min
|
|
P2O5content:
|
42.4%min
|
42.4%min
|
|
Na2O:
|
36-40
|
36-40
|
|
PH value(1% aqueous solution):
|
11.5-12.5
|
11.5-12.5
|
|
Loss on ignition:
|
2.0%max
|
2.0%max
|
|
Sulphate:
|
- |
0.05%max
|
|
Fluorate:
|
- |
0.005%max
|
|
Chloride:
|
- |
0.014%max
|
|
Heavy Metals(based on Pb):
|
- |
0.001%max
|
|
Arsenic (base on As):
|
- |
0.0003%max
|
(2) Trisodium Phosphate Dodecahydrate
|
Item
|
Industrial Grade
|
Food Grade
|
|
Content (Na3PO4.12H2O):
|
98%min
|
98%min
|
|
P2O5content:
|
18.3%min
|
18.3%min
|
|
Sulphate:
|
0.5%max
|
0.5%max
|
|
Chloride:
|
0.3%max
|
0.02%max
|
|
Water insoluble matter:
|
0.1%max
|
0.1%max
|
|
Na2O:
|
15.5-19
|
15.5-19
|
|
Heavy metal(based on Pb)
|
- |
0.001%max
|
|
Arsenic(based on As):
|
- |
0.003%max
|
[Application] Used as soft water agent for boiler, clearing agent in electroplating, etc.