|
item
|
Technical Grade(index)
|
Food grade(index)
|
|
Phosphorus pentoxide(asP2O5)
|
68%min
|
68%min
|
|
unactive phosphate(P205)
|
7.5%max
|
7.5%max
|
|
Iron(Fe)
|
0.05%max
|
0.05%max
|
|
PH value
|
5.8-7.3
|
5.8-6.5
|
|
Insoluble matter in water
|
0.05%max
|
0.06%max
|
|
Arsenic(As)
|
|
0.0003%max
|
|
Heavy Metal(as Pb)
|
|
0.001%max
|
|
Flouride(as F)
|
|
0.003%max
|
Mainly used as water-treatment agent, bonding agent, floatation agent, dispersant and so on.
CAS#: 10124-56-8 or 68915-31-1
(NaPO3)6