Sodium 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 95 % Ethanol. |
Very soluble in water , freely soluble in 95 % Ethanol. |
| Identification |
A & B |
Complies the test. |
| Appearance of solution |
Solution S is clear and colourless. |
Solution is clear and colourless. |
| Alkalinity |
Not more than 0.7 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. |
| Sulphate |
Max. 150 ppm |
< 0.2 ppm. |
| Thiosulphate & Barium |
No blue coloration of the paper is discernible |
Complies the test |
| Heavy Metals |
Max . 10 ppm |
< 0.03 ppm |
| Iron |
Max. 20 ppm |
< 0.02 ppm |
| Calcium |
Max.0.002 % |
< 0.0001 % |
| Magnesium |
Max.0.001 % |
< 0.0001% |
| Insoluble matter |
Max.0.01 % |
Should be Nil |
| Nitrate,Nitrite and Amonium. |
No blue coloration of red litmus
paper is discernible. |
Complies the test |
| Loss on drying |
Max . 1.0 % |
< 0.30 % |
| Assay (on dried basis) |
Not Less than 99.0 to Not more than 100.5 % |
> 99.50 % |
