Sodium Sulphite BP

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

Test (A)

Test (B)

Test (C)

Test (D)


(a) Solution S is slightly alkaline

(b) It gives the reaction of Sulphates.

(b)It gives the 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 S is clear and colorless.
Thiosulfates Not more than 0.1%.
Iron Not more than 10 ppm, determined on solution S1.
Selenium Not more than 10 ppm.
Zinc Not more than 25 ppm.
Microbial Contamination




Not more than 103 cfu/g

Not more than 102 cfu/g

Bacterial Endotoxin Not more than 5 IU/g
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.


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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