| Description |
Colourless crystals or a white, crystalline powder.
|
Identification |
The solution gives the reactions of potassium salts and of chlorides
|
| Appearance of solution |
Solution should be Clear and colorless
|
Acidity or alkalinity |
Not more than 0.5 ml of 0.01 M sodium hydroxide or 0.01 M hydrochloric acid for neutralisation to bromothymol blue solution
|
| Arsenic |
NMT 1 ppm
|
Barium |
Solution is not more opalescent than a mixture of 5 ml of solution A and 6 ml of water.
|
| Heavy metals |
NMT 10 ppm
|
Calcium & magnesium |
The solution remains clear
|
| Iodides |
The substance shows no blue colour after 5 minutes.
|
Sulphates |
NMT 300 ppm
|