1 | Description | Colorless, odorless, deliquescent crystals, hygroscopic | Colorless, odorless, deliquescent flakes or crystals, hygroscopic |
2 | Solubility | Complies | Very soluble in water; freely soluble in alcohol & in ethanol (96%) |
3 | Identification (By Water) | 52.7% | 51.0% - 55.0% |
4 | Identification (Magnesium 1) | Complies | A white crystalline precipitate which insoluble in 6N ammonium hydroxide should form |
5 | Identification (Chloride) | Complies | A curdy white precipitate that insoluble in nitric acid but soluble in a slight excess 6N ammonium hydroxide should form |
6 | Assay | 99.5% | 98.0%- 101.0% |
7 | Insoluble matter | 0.002% | NMT 0.005% |
8 | Appearance of solution | Complies | Clear and colorless solution. |
9 | Sulphate (SO4) | Less than 0.005% | NMT 0.005% |
10 | Barium(Ba) | Complies | No turbidity should produce within 2 hrs. |
11 | Calcium (Ca) | 0.0009% | NMT 0.01% |
12 | Potassium (K) | Complies | No turbidity should produce within 5 min. |
13 | Bromide (Br) | Less than 500 ppm | NMT 500 ppm |
14 | Arsenic (As) | Less than 2 ppm | NMT 2 ppm |
15 | Iron (Fe) | Less than 10 ppm | NMT 10 ppm |
16 | pH | 5.74 | 4.5-7.0 |
17 | Acidity & alkalinity | Complies | Not more than 0.3ml of either 0.01M hydrochloric acid or 0.01M sodium hydroxide should require to change the colour of the indicator. |
18 | Water | 52.7% | 51.0% - 55.0% |