| ≥1 piece |
|
No.
|
Parameter
|
Unit
|
food Grade
|
|
1
|
Appearance
|
White powder or white
|
|
|
2
|
Assay (Na5P3O10 ）
|
%
|
≥85.0
|
|
2
|
P2O5
|
%
|
≥56.0
|
|
3
|
Water insoluble matter
|
%
|
≤0.05
|
|
4
|
PH （ 1% solution ）
|
9.5-10.0
|
|
|
5
|
PPM
|
≤10
|
|
|
6
|
PPM
|
≤3
|
|
|
7
|
Fluoride(as F)
|
PPM
|
≤50
|
|
8
|
Heavy Metals (as Pb)
|
PPM
|
≤4
|
|
9
|
As
|
%
|
≥90
|
|
10
|
Bulk density
|
g/ml
|
0.75
|