|
Indexes
|
Industrial Grade
|
Food Grade
|
|
Assay Na5P3O10 % ≥
|
94.0
|
94.0
|
|
P2 O 5 % ≥
|
57.0
|
57.0
|
|
Water Insoluble Matter % ≤
|
0.15
|
0.05
|
|
Iron(Fe) % ≤
|
0.015
|
0.015
|
|
PH value (1% water solution)
|
9.2-10.0
|
9.5-10.0
|
|
Heavy Metal (as Pb) % ≤
|
|
0.001
|
|
Arsenic (As) % ≤
|
|
0.0003
|
|
Fluoride (F) % ≤
|
|
0.003
|
|
Whiteness % ≥
|
90
|
90
|
|
Ignition loss
|
1.0
|
/
|
|
density (g/cm3)
|
0.35-0.9
|
0.35-0.9
|
|
Phase I
|
10-30
|
10-30
|
