|
|
 Molecular
Formula: (NH4)2SO4
Molecular Weight: 132.13
Property: white
or light-colored crystalline solid.
Uses:
used in biochemical, leather making and
food industry; used to produce compound fertilizers or
directly as fertilizer in agricultural industry.
Specification: packed
in bag, net weight: 50Kg/bag.
Standard:
GB535-1995
Quality
Index: |
|
Item
|
Index |
|
Excellent
Grade |
First
Grade |
Qualified
Grade |
| Nitrogen Content, %≥ |
21.0 |
21.0 |
20.5 |
| Moisture, %≤ |
0.2 |
0.3 |
1.0 |
| Free Acid, %≤ |
0.03 |
0.05 |
0.20 |
| Iron(Fe), %≤ |
0.007 |
|
|
| Arsenic (As), %≤ |
0.00005 |
|
|
| Heavy Metals, %≤ |
0.005 |
|
|
| Water-insoluble Matters,
%≤ |
0.01 |
|
|
|
