Products – Anmol Chemicals Private Limited

Sodium Sulfite BP


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…BP
Characters It occurs as a white or almost white powder.


Test (B)

Test (C)

Test (D)


(a) Solution is slightly alkaline

(b) It gives reaction of sulfates

(c) It gives reaction of sodium

(d) It complies with the limits of the assay.

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
Microbial Limit Test

Total Aerobic Microbial Count

Total Combined yeast/moulds Count


Not more than 103 cfu/g

Not more than 102 cfu/g

Assay Not less than 95.0% and not more than 100.5% of Na2SO3.


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)