NO. | TESTS | OBSERVATION | LIMIT |
---|---|---|---|
1. | Description | COMPLIES | White crystalline powder. |
2. | Solubility | COMPLIES | Freely soluble in water. |
3. | Identification | COMPLIES | Gives reaction of NH4 salt & chlorides. |
4. | Clarity & Color of soln. | COMPLIES | 10% w/v sample sol. is clear & colorless. |
5. | PH of 50% w/v Sol | COMPLIES | Between 4.5 to 6.0. |
6. | Arsenic | COMPLIES | Less than 4 PPM. |
7. | Calcium | COMPLIES | Less than 4 PPM. |
8. | Iron | COMPLIES | Less than 20 PPM. |
9. | Heavy Metals | COMPLIES | Less than 10 PPM. |
10. | Basic Sulphate | COMPLIES | Less than 150 PPM. |
11. | Thiocynate | COMPLIES | To Comply as per IP. |
12. | Sulphated Ash | COMPLIES | Less than 0.1 % |
13. | Loss on drying | COMPLIES | Less than 1.0 % |
14. | Assay | COMPLIES | Betn 99.0% to 100.5% cal. on dried basis. |