Potassium Bromide Specification
| Test |
Specification |
Result |
| Description |
A white crystalline powder. |
A white crystalline powder. |
| Solubility |
Freely soluble in water. |
Freely soluble in water. |
| Identification |
A & B |
Complies the test |
| Appearance of solution |
10 % w/v solution is clear and colourless. |
Solution is clear & colourless |
| Acidity & Alkalinity |
Not more than 0.5 ml of 0.01 M hydrochloric acid or 0.01 M sodium hydroxide is required to change the colour of the indicator. |
Complies the test |
| Heavy metals |
Max. 10 ppm |
< 0.002 ppm |
| pH (5% aq. Solution) |
6.0 to 8.8 |
6.5 to7.6 |
| Bromate |
No blue colour developes |
Complies the test |
| Arsenic |
Limit max. 2 ppm |
< 0.002ppm |
| Barium & Iron |
0.001 % |
< 0.0002 % |
| chloride |
Max. 0.6 % |
< 0.25 % |
| Sulphate |
Max. 100 ppm |
< 0.1 ppm |
| Sodium , Calcium & Magnesium |
Max 0.05 % |
< 0.0002 % |
| Loss on drying @ 1050C |
Max 1.0 % |
< 0.25 % |
| Assay (on dried basis) |
Not less than 99.0 & Not more than 100.5 % |
> 99.55 % |
