Grades |
IP |
BP |
USP |
EP |
Appearance of solution |
Clear in acetic acid |
Clear |
Clear |
Clear |
Arsenic |
Max 2 ppm |
Max 2 ppm |
Max. 4 ppm |
Max. 2 ppm |
Iron |
Max 400 ppm |
Max 400 ppm |
Max. 0.02 % |
Max. 400 ppm |
Heavy Metals |
Max 0.002% |
Max 20 ppm |
Max. 0.003 % |
Max. 20 ppm |
Chloride |
0.1% Max. |
700 PPM Max. |
0.1 % Max. |
Max. 0.07 % |
Calcium |
0.75% Max. |
0.75% Max. |
0.45 % Max. |
Max. 0.75 % |
Copper |
No Blue Colour |
- |
- |
- |
Soluble Substance |
1 % Max. |
1 % Max. |
1.0 % Max. |
Max. 1.0 % |
Substance In-soluble in Acetic Acid |
0.05% Max. |
0.05% Max. |
0.05 % Max. |
Max. 0.05 % |
Sulphate |
0.3% Max. |
0.3% Max. |
- |
Max. 0.3 % |
Microbial Limits |
- |
- |
Should meet requirements |
- |
Assay as MgO |
40.0 % to 43.5 % |
40.0 % to 45.0 % |
40.0 % to 43.5 % |
40.0 % to 45.0 % |