|
Item |
Value | ||||||
|
Industry Grade |
Food Grade | ||||||
|
85% |
75% | ||||||
|
Excellent |
Grade 1 |
Grade 2 |
Excellent |
Grade 1 |
Grade 2 | ||
|
Colority ≤ |
20 |
30 |
40 |
20 |
30 |
40 |
20 |
|
Content (H 3 P O 4 ), % ≥ |
85.0 |
85.0 |
85.0 |
75.0 |
75.0 |
75.0 |
75.0~86.0% |
|
Chloride(Cl ) , % ≤ |
0.0005 |
0.0005 |
0.001 |
0.0005 |
0.0005 |
0.001 |
|
|
Sulphates( SO 4 ), % ≤ |
0.003 |
0.005 |
0.01 |
0.003 |
0.005 |
0.01 |
|
|
Iron(Fe), % ≤ |
0.002 |
0.002 |
0.005 |
0.002 |
0.002 |
0.005 |
|
|
Arsenic (As) , % ≤ |
0.0001 |
0.005 |
0.01 |
0.0001 |
0.005 |
0.01 |
0.00005 |
|
Arsenic (Pb), % ≤ |
0.001 |
0.001 |
0.05 |
0.001 |
0.001 |
0.05 |
0.0005 |
|
Heavy metals ( F), % ≤ |
|
|
|
|
|
|
0.0010 |
|
Easily oxidated matter( H 3 PO 3 ), % ≤ |
|
|
|
|
|
|
0.012 |
