No.
|
Index
|
Tech grade
|
Food grade
|
1
|
Na5P3O10 % ≥
|
94.0
|
94.0
|
2
|
P4O10 % ≥
|
57.0
|
57.0
|
3
|
insoluble % ≤
|
0.10
|
0.05
|
4
|
Fe % ≤
|
0.015
|
0.015
|
5
|
PH
|
9.2-10.0
|
9.5-10.0
|
6
|
Pb % ≤
|
|
0.001
|
7
|
As % ≤
|
|
0.0003
|
8
|
F % ≤
|
|
0.003
|
9
|
whiteness %≥
|
90
|
90
|
11
|
specific weight (g/cm3)
|
0.35-0.9
|
0.35-0.9
|