Sodium Sulphite BP Ph Eur EP IP Sodium Sulfite USP NF Analytical Reagent FCC Food grade Manufacturers |
Supplier, Manufacturer, Exporter of Sodium Sulphite BP Ph Eur EP IP Sodium Sulfite USP NF Analytical Reagent FCC Food grade, Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance Food & Flavor chemicals, Reagent Grade 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, Bangladesh, 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 - cGMP and GLP approval, ISO-9001 Certified, "REACH" Registered, ISO-14001, ISO/IEC 17025, ISO-22000, FSSC 22000, ISO 45001, Kosher Certified, Halal Certified, HACCP, FSSAI. We offer Commercial Pure & IP BP EP Ph Eur USP NF JP FCC Food Grade Analytical Reagent Grades of Chemicals |
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Sodium Sulfite
Technical & Pure Sodium Sulphite
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Sodium Sulphite Heptahydrate BP Ph Eur Specifications
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 Grade Specifications
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 Food Grade Specifications
Na2SO3 Formula weight 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 Analytical Reagent Grade Specifications
Sodium Sulfite Reagent
Sodium Sulfite Anhydrous
Na2SO3
Formula Weight 126.04
CAS Number 7757-83-7
| 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% |
We also manufacture Sodium Sulfite or Sodium Sulphite EP Grade.
We manufacture and supply as under:
Manufacturers:
MUBY CHEMICALS
Ambernath Mumbai, Ankleshwar Gujarat, India
TEL: (OFFICE) +912223770100, +912223726950
Current Date Time in India GMT+5:30
e-mail: info@mubychem.com
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e-mail: us@mubychem.com
Call toll-free 1-877-682-9243 (1-877-MUBYCHEM)
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Last 9 November, 2025
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