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Mubychem Group, is a mature manufacturing company since generations. Engaged in manufacture and supply of Sodium Sulphite BP Ph Eur EP JP IP Sodium Sulfite USP NF API ACS Analytical Reagent FCC Food grade Manufacturers Food Grade, Pharmaceutical Intermediates and Excipients, Oil field & fracturing chemicals, Specialty tailor made grades of chemicals in India. With several manufacturing facilities in India and world wide contacts and toll manufacturers we are exporting to all the countries in the world.. |
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Sodium Sulphite BP Ph Eur EP IP JP Sodium Sulfite USP NF ACS Analytical Reagent FCC Food grade Manufacturers
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
Antioxidant.
DEFINITION
Content
48.0 per cent to 52.5 per cent of Na2SO3.
CHARACTERS
Appearance
Colourless crystals.
Solubility
Freely soluble in water, very slightly soluble in ethanol (96 per cent).
IDENTIFICATION
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.
TESTS
Solution S
Dissolve 10 g in water R and dilute to 100 ml with the same solvent.
Solution S1
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.
Thiosulphates
Maximum 0.05 per cent.
Iron
Maximum 5 ppm, determined on solution S1.
Selenium
Maximum 5 ppm.
Zinc
Maximum 12.0 ppm.
Heavy metals
Maximum 5 ppm.
Sodium Sulfite USP NF
Na2SO3 -- 126.0 CAS 7757-83-7
Sodium Sulfite USP NF
Contains not less than 95.0 percent and not more than 100.5 percent of Na2SO3
Identification—
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
Na2SO3 Formula wt 126.04
INS: 221 CAS: 7757-83-7
DESCRIPTION
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.
REQUIREMENTS
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
Reagent Chemicals
ACS Specifications
Sodium Sulfite ACS
Sodium Sulfite Anhydrous
Na2SO3
Formula Wt 126.04
CAS Number 7757-83-7
REQUIREMENTS
Assay | min. 98.0% Na2SO3 |
MAXIMUM ALLOWABLE
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% |
Sodium Sulphite BP Sodium Sulfite USP NF ACS Analytical Reagent FCC Food grade Manufacturers at:
MUBY CHEMICALS GROUP
DONGRI-CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE) 91-22-23770100, 91-22-23726950, 91-22-23774610, 23723564.
e-mail: info@mubychem.com
