Products – Anmol Chemicals Private Limited

Sodium Sulfite USP


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.



It is used as a preservative to prevent dried fruit from discoloring, and for preserving meats.



Molecular Formula: Na2SO3

Molecular Weight: 126.0 g/mol

CAS No.: 7757-83-7



Test Specification
Characters It occurs as a white or almost white powder.


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.


We Manufacture Bulk Dugs/API, Excipients, pharmaceuticals (IP/BP/USP/NF/PH. EUR./JP), Speciality Chemicals (Pure/AR/ACS), mineral fortifiers (FCC). our manufacturing facility is GLP, GMP (FDA) approved, ISO 9001, ISO 14001, ISO 22000, FSSC 22000, FSSAI, kosher, halal, COPP and WHO-GMP certified.

Good Manufacturing Practice Certified by World Health Organization (WHO-GMP)
Written Confirmation Certification (WC)
Good Manufacturing Practice (EXCiPACT cGMP)
Good Manufacturing Practice (cGMP)
Good Laboratory Practice (GLP)