Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance & Flavor chemicals, Shale Gas Fracturing Chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, China, Germany, France, Italy, Portugal etc. The products are offered as per required specifications and in correct shape and size in mm or meshs or microns as specified by the buyer. The participating units have one or more accreditations like FDA - GMP approval; ISO-9001:2008 Certified; "REACH" Pre-registered; ISO-22000:2005; Kosher Certified; Halal Certified; HACCP FSSAI. We offer Commercial Pure & IP BP USP FCC Food Grade ACS AR Analytical Reagent Grades of Chemicals
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Sodium Sulphite BP IP Sodium Sulfite USP NF ACS Analytical Reagent FCC Food grade Manufacturers
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For MSDS Sheet Click MSDS of Sodium Sulfite Sodium Sulphite BP USP NF IP ACS Analytical Reagent FCC Food grade Manufacturers
British Pharmacopoeia 2009
Sodium Sulphite Heptahydrate BP
Sodium Sulfite BP
Action and use
48.0 per cent to 52.5 per cent of Na2SO3.
Freely soluble in water, very slightly soluble in ethanol (96 per cent).
A. Solution S (see Tests) is slightly alkaline.
B. To 5 ml of solution S add 0.5 ml of 0.05 M iodine. The solution is colourless and gives reaction of sulphates.
C. Solution S gives reaction (a) of sodium (2.3.1).
D. It complies with the limits of the assay.
Dissolve 10 g in water R and dilute to 100 ml with the same solvent.
To 20.0 g add 25 ml of water R . Shake until mostly dissolved, and carefully and progressively, add 15 ml of hydrochloric acid R . Heat to boiling. Cool and dilute to 100.0 ml with water.
Appearance of solution
Solution S is clear and colourless.
Maximum 0.05 per cent.
Maximum 5 ppm, determined on solution S1.
Maximum 5 ppm.
Maximum 12.0 ppm.
Maximum 5 ppm.
Sodium Sulfite USP NF
Na2SO3 126.0 [7757-83-7]
Sodium Sulfite USP NF
Contains not less than 95.0 percent and not more than 100.5 percent of Na2SO3
A: Dissolve 5 g of in 100 mL of water. [NOTE—Reserve portions of the solution so obtained for use in Identification test B and in the test for Color and clarity of solution.] Add a drop of phenolphthalein TS: a pink color is produced.
B: To 5 mL of the solution from Identification test A, add 0.5 mL of iodine TS: the solution is colorless, and it meets the requirements of the barium chloride test for Sulfate.
C: It meets the requirements of the pyroantimonate precipitate test for Sodium.
Color and clarity of solution— Examine the solution prepared for Identification test A: the solution is clear and colorless.
Heavy metals: 10 3g per g, the Test Preparation being prepared as follows. To 8.0 g of Sodium Sulfite add 25 mL of water. Shake until mostly dissolved, and slowly and carefully add 15 mL of hydrochloric acid. Heat to boiling. Cool, and dilute with water to 100.0 mL. Use a 25-mL portion.
Limit of iron— not more.
Limit of selenium— not more than 10 3g per g is found.
Limit of thiosulfates— not more than 25 µg per g is found.
Sodium Sulfite FCC Food Grade
Na2SO3 Formula wt 126.04
INS: 221 CAS: [7757-83-7]
It occurs as a white or tan to slightly pink powder. It undergoes oxidation in air. Its solutions are alkaline to litmus and to phenolphthalein. One gram dissolves in about 4 mL of water. It is sparingly soluble in alcohol.
Function: Preservative; antioxidant; bleaching agent.
Identification: A 1:20 aqueous solution gives positive tests for Sodium and for Sulfite.
Assay: Not less than 95.0% of Na2SO3.
Lead: Not more than 2 mg/kg.
Selenium: Not more than 0.003%.
Sodium Sulfite Anhydrous ACS Analytical Reagent
Sodium Sulfite ACS
Sodium Sulfite Anhydrous
Formula Wt 126.04
CAS Number 7757-83-7
Assay min. 98.0% Na2SO3
Insoluble matter 0.005% Free acid Passes test Titrable free base 0.03 meq/g Chloride (Cl) 0.02% Heavy metals (as Pb) 0.001% Iron (Fe) 0.001%
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Last 23 March, 2017
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