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.
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Sodium Sulphite BP IP Sodium Sulfite USP NF ACS Analytical Reagent FCC Food grade Manufacturers

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Sodium Sulfite
Technical & Pure Sodium Sulphite
Also IP BP Ph. Eur. USP-NF ACS AR LR FCC Food Grades

Sodium Sulfite

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 [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

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 Analytical Reagent

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%

Manufacturers:

MUBY CHEMICALS
Ambernath Mumbai, Ankleshwar Gujarat, India
TEL: (OFFICE) 91-22-23770100, 23726950
Current Date Time in India GMT+5:30

e-mail: info@mubychem.com

USA & Canadian Customers may
e-mail: usa@mubychem.com
Call toll-free 1-844-682-9243 (1-844-MUBYCHEM)

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Last 18 May, 2017

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