| Test |
Specification...IP |
| Appearance |
Colorless large crystals or a coarse, crystalline powder; odorless; deliquescent in moist air and effloresces in dry air at temperature above 330. It dissolves in its water of crystallization at about 490. |
| Solubility |
Very soluble in water, practically insoluble in ethanol (96%). It is soluble in its water of crystallization at about 490C |
| Appearance of solution |
The solution is clear and colorless |
| pH |
6.0 to 8.4 |
| Arsenic |
Maximum 2ppm |
| Heavy metals |
Maximum 20ppm |
| Chlorides |
Maximum 200ppm |
| Sulphides |
Passes test |
| Sulphates and sulphites |
Maximum 0.2% |
| Assay |
Not less than 99% and not more than 101% |
| Test |
Specification...BP |
| Appearance |
It occurs as transparent, colorless crystals, efflorescent in dry air |
| Identification
Test A
Test B
Test C
Test D |
a. Specified test.
b. Specified test. A white precipitate is formed which rapidly becomes yellowish and then black.
c. Specified test.
d. It gives reaction of sodium. |
| Solubility |
Very soluble in water, practically insoluble in ethanol 96% |
| pH |
Between 6.0 to 8.4 |
| Appearance of solution |
The solution is clear and colorless. |
| Sulfates and sulfites |
Not more than 0.2% |
| Sulfides |
Specified test. The solution does not become violet. |
| Assay |
Not less than 99.0% and not more than 101.0% Na2S2O3. 5H2O |
| Test |
Specification...USP |
| Appearance |
It appears as transparent crystals or pellets |
| Solubility |
Freely soluble in water |
| Appearance of solution |
The solution is clear and colorless |
| Water |
Between 32% and 37% |
| Calcium |
Passes test |
| Heavy metals |
Maximum 0.002% |
| Residual solvents |
Meets the requirements |
| Assay |
Not less than 99% and not more than 100.5% |
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
Other
GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.
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