Potassium Iodide Specification
| Test |
Specification |
Result |
| Description |
A white crystalline powder, odourless, taste saline, bitter, deliquescent in moist air. |
A white crystalline powder, Odourless, taste saline, bitter, deliquescent in moist air. |
| Solubility |
Very soluble in water , freely soluble in Glycerine ; Soluble in 95 % Ethanol. |
Very soluble in water , freely soluble in Glycerin ; Soluble in 95 % Ethanol. |
| Identification |
A & B |
Complies the test. |
| Alkalinity |
Not more than 0.5 ml of 0.01 M hydrochloric acid is required to change the colour of the indicator. |
Complies the test. |
| Iodates |
No blue colour develops. |
No blue colour develops. |
| Sulphates |
Max. 150 ppm |
< 0.2 ppm. |
| Thiosulphate & Barium |
No blue coloration of the paper is discernible |
Complies the test |
| Heavy Metals |
Max . 10 ppm |
< 0.01 ppm |
| Iron |
Max. 20 ppm |
< 0.06 ppm |
| Insoluble matter |
Max. 0.02% |
< 0.0002 % |
| Calcium |
0.01 % |
< 0.0002 % |
| Magnesium |
Max.0.005 % |
< 0.0001 % |
| Sodium |
Max. 0.2 % |
< 0.0001 % |
| Nitrate,Nitrite and Amonium |
No blue coloration of red litmus paper discernible. |
Complies the test. |
| Loss on drying |
Max . 0.5 % |
< 0.20 % |
| Assay (on dried basis) |
Not Less than 99.0 to Not more than 100.5 % |
> 99.50 % |
