Potassium Metabisulphite Metabisulfite BP USP IP FCC Food grade Manufacturers

Supplier, Manufacturer, Exporter of Potassium Metabisulfite or Potassium Metabisulphite, 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 etc.

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Potassium Metabisulfite CAS Number 16731-55-8, Molecular Weight 222.3, Chemical Formula K2S2O5

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Potassium Metabisulfite
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Potassium Metabisulfite

Potassium Metabisulphite BP

K2S2O5 - 222.3 - CAS 16731-55-8

DEFINITION
Potassium metabisulphite (potassium disulphite).
Content
95.0 per cent to 101.0 per cent.

CHARACTERS
Appearance
White or almost white powder, or colourless crystals.
Solubility
Freely soluble in water, slightly soluble in ethanol (96 per cent).

IDENTIFICATION
A. pH (see Tests).
B. To 5 ml of solution S (see Tests), add 0.5 ml of 0.05 M iodine. The mixture is colourless and gives reaction of sulphates.
C. Solution S gives reaction of potassium.

TESTS
Solution S
Dissolve 5.0 g in carbon dioxide-free water R and dilute to 100 ml with the same solvent.
Appearance of solution
Solution S is clear and colourless.
pH
3.0 to 4.5 for solution S.
Thiosulphates
To 2.00 g add 25 ml of a 42.5 g/l solution of sodium hydroxide and 75 ml of water. Shake until dissolved and add 10 ml of formaldehyde and 10 ml of acetic acid. After 5 min, titrate with 0.05 M iodine using 1 ml of starch solution. Carry out a blank titration. The difference between the volumes consumed in the 2 titrations is maximum 0.15 ml.
Iron
Maximum 10 ppm.
Selenium
Maximum 10 ppm.
Zinc
Maximum 25 ppm.
Heavy metals
Maximum 10 ppm.


Potassium Metabisulfite USP

Potassium Metabisulfite
K2S2O5 222.33
Disulfurous acid, dipotassium salt.
Dipotassium pyrosulfite [CAS 16731-55-8].

Potassium Metabisulfite contains an amount of K2S2O5 equivalent to not less than 51.8 percent and not more than 57.6 percent of SO2.

Identification— A solution (1 in 20) responds to the tests for Potassium and for Sulfite.
Iron— Dissolve 1.00 g in 14 mL of dilute hydrochloric acid (2 in 7), and evaporate on a steam bath to dryness. Dissolve the residue in 7 mL of dilute hydrochloric acid (2 in 7), and again evaporate to dryness. Dissolve the resulting residue in a mixture of 2 mL of hydrochloric acid and 20 mL of water, add 3 drops of bromine TS, and boil to expel the bromine. Cool, and dilute with water to 47 mL: the limit is 0.001%.
Heavy metals— Dissolve 2 g in 20 mL of water, add 5 mL of hydrochloric acid, evaporate on a steam bath to about 1 mL, and dissolve the residue in 25 mL of water: the limit is 0.001%.


Potassium Metabisulfite FCC Food Grade

Potassium Pyrosulfite
K2S2O5 Formula weight 222.31
INS: 224 CAS: [16731-55-8]

DESCRIPTION
Potassium Metabisulfite occurs as white or colorless, free flowing crystals, crystalline powder, or granules. It gradually oxidizes in air to the sulfate. It is soluble in water, but it is insoluble in alcohol. Its solutions are acid to litmus.

Function: Preservative; antioxidant; bleaching agent.

REQUIREMENTS
Identification: A 1:10 aqueous solution gives positive tests for Potassium and for Sulfite.
Assay: Not less than 90.0% of K2S2O5.
Lead: Not more than 2 mg/kg.
Iron: Not more than 10 mg/kg.
Selenium: Not more than 5 mg/kg.

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

USA, Canada, Mexico and other American
neighbouring buyers may
e-mail: us@mubychem.com
Call toll-free 1-844-682-9243 (1-844-MUBYCHEM)

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Last 27 August, 2022

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