1 | Description | White powder, having the odour of sulfur dioxide. | White granules or powder, having the odour of sulfur dioxide. |
2 | Solubility | Complies | Freely soluble in water, practically insoluble in ethanol and in diethyl ether. |
3 | Identification A (By Chemical test) | Complies | Gives positive test for sodium |
4 | Identification B (By Chemical test) | Complies | Gives positive test for bisulfite |
5 | Clarity and colour of solution | Complies | The solution is clear and colorless. |
6 | Thiosulfate (S2O3) | Complies | No turbidity is produced |
7 | Heavy metals | Less than 20ppm | NMT 20ppm |
8 | Iron (Fe) | Less than 20ppm | NMT 20ppm |
9 | Arsenic (As) | Not detected | NMT 4ppm |
10 | Assay | 65.2% | NLT 64.0% and NMT 67.4 % of SO2 |
11 | Total aerobic microbial count | Less than 100 CFU/gm | NMT 100 CFU/gm |
12 | Total combined yeast and molds count | Less than 100 CFU/gm | NMT 100 CFU/gm |
13 | Pseud. aeruginosa | Absent/gm | should be absent/gm |
14 | Staphylococcus aureus | Absent/gm | should be absent/gm |
15 | E.coli | Absent/gm | should be absent/gm |
16 | Bile-tolerant gram negative bacteria | Absent/gm | should be absent/gm |
17 | Salmonella | Absent/10 gm | should be absent/10gm |
18 | Candida albicans | Absent/gm | should be absent/gm |
19 | Bacterial endotoxin test | Less than 6.0 EU/gm | NMT 6.0 EU/gm |