1 | Description | Colorless, odorless, deliquescent crystals. | Colorless, odorless, deliquescent flakes or crystals |
2 | Solubility | Passes | Very soluble in water; freely soluble in alcohol. |
3 | Assay | 99.6% | 99.0% - 101.0% |
4 | Identification (Magnesium 1) | Passes | A white crystalline precipitate which insoluble in 6N ammonium hydroxide should form |
5 | Identification (Magnesium 2) | Passes | A bright red turbidity should produce which gradually settles to give a bright red precipitate |
6 | Identification (Chloride) | Passes | A curdy white precipitate that insoluble in nitric acid but soluble in a slight excess 6N ammonium hydroxide should form |
7 | Appearance of solution | Passes | Clear and colorless solution |
8 | Insoluble matter | Less than 0.005% | NMT 0.005% |
9 | Acidity or Alkalinity | Passes | NMT 0.3 mL of 0.01 M hydrochloric acid or 0.01 M sodium hydroxide should require to change the colour of the indicator. |
10 | pH(5% w/v in water) | 5.84 | 5.0 – 7.0 |
11 | Bromide (Br) | Less than 0.05% | NMT 0.05% |
12 | Sulfate (SO4) | Less than 0.005% | NMT 0.005% |
13 | Heavy metals (as Pb) | Less than 0.001% | NMT 0.001% |
14 | Aluminium (Al) | Less than 0.0001% | NMT 0.0001% |
15 | Arsenic (As) | Less than 0.0002% | NMT 0.0002% |
16 | Barium (Ba) | Passes | No turbidity should produced within 2 h. |
17 | Calcium (Ca) | Less than 0.01% | NMT 0.01% |
18 | Iron (Fe) | Less than 0.0005% | NMT 0.0005% |
19 | Mercury(Hg) | Less than 0.0001% | NMT 0.0001% |
20 | Potassium (K) | Less than 0.05% | NMT 0.05% |
21 | Ammonium(NH4) | Less than 0.005% | NMT 0.005% |
22 | Lead (Pb) | Less than 0.0004% | NMT 0.0004% |
23 | Water | 52.33% | 51.0% – 55.0% |
24 | Total aerobic microbial count | Less than 100CFU/gm | NMT 100CFU/gm |
25 | Total Yeast and mold count | Less than 100CFU/gm | NMT 100CFU/gm |
26 | Bacterial endotoxins | Less than 3.0 IU/gm | NMT 3.0IU/gm |