Sodium Sulfite USP
Abstract:
Sodium sulfite is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3. Sodium sulfite exhibits bleaching, de-sulfurizing, and dechlorinating activities.
Uses/Applications:
It is used as a preservative to prevent dried fruit from discoloring, and for preserving meats.
Identity:
Molecular Formula: Na2SO3
Molecular Weight: 126.0 g/mol
CAS No.: 7757-83-7
Specifications:
| Test | Specification |
| Characters | It occurs as a white or almost white powder. |
| Identification
Test(A) Test (B) Test (C) |
(a) Specified Test. A pink color is produced. (b) It gives reaction of sulfate. (c) It gives reaction of sodium |
| Solubility | Freely soluble in water, very slightly soluble in ethanol (96 %). |
| Appearance of solution | Solution is clear and colorless |
| Thiosulfates | Not more than 0.1% |
| Iron | Not more than 10ppm |
| Selenium | Not more than 10ppm |
| Zinc | Not more than 25ppm |
| Residual Solvents | Meets the requirement. |
| Assay | Not less than 95.0% 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.
