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Mubychem Group, established in 1976, is the pioneer manufacturer of Zinc Chloride, Ammonium Chloride, Calcium Chloride, Potassium Chloride, Sodium Acetate, Sodium Thiosulfate, Sodium Sulfite, Pharmaceutical, Fragrance & Flavor chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India. |
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Sodium Sulfite USP NF Sodium Sulphite BP Manufacturers
Buy Sodium Sulphite; Door Delivery
For MSDS Sheet Click
MSDS; Sodium Sulfite
Manufacturers; Sodium Sulphite MSDS
Sodium Sulfite
Technical & Pure Sodium Sulphite
Also IP BP Ph. Eur. USP-NF ACS AR LR FCC Food Grades
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
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 ChemicalsACS Specifications
Sodium Sulfite ACS
Sodium Sulfite Anhydrous
Na2SO3
Formula Wt 126.04
CAS Number 7757-83-7
REQUIREMENTS
|
Assay |
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
Sodium Sulphite manufacturers
Sodium Sulfite manufacturers at:
MUBY CHEMICALS
S-8, SARIFA MANSION, 2ND FLANK ROAD,
CHINCHBUNDER, MUMBAI 400009, INDIA.
TEL: (OFFICE) 91-22-23770100, 23726950,
23774610, 23723564. FAX: 91-22-23728264.
e-mail:
info@mubychem.com
Cell Call
to Anmol: +91-9821870100
USA & Canadian Customers may Call
773-829-5811
Copyright and Usual Disclaimer is
Applicable.
Last updated
12 December, 2011
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