

Potassium Metabisulphite 500gm
$810.00 Original price was: $810.00.$700.00Current price is: $700.00.
Potassium metabisulfite is a white, crystalline powder with a characteristic sulfur dioxide-like odor. It is soluble in water and commonly used in various industries for its antioxidant and antimicrobial properties. In food and beverage production, it acts as a preservative to prevent spoilage and oxidation. Additionally, it’s used in water treatment and as a disinfectant in various industrial processes.
Uses of Potassium Metabisulphite
Analytical Chemistry:
It is used as a reagent for the determination of certain metals, such as chromium, through titration methods.
Preservation:
Similar to its food preservation role, it is used in laboratories to preserve samples susceptible to oxidation or microbial degradation.
Reduction Agent:
It serves as a reducing agent in various chemical reactions, particularly in organic synthesis and in the preparation of certain compounds.
Antioxidant:
Potassium metabisulfite is used to prevent oxidation in certain reactions where oxygen sensitivity is a concern.
Disinfectant:
In microbiology and biological laboratories, it can be used as a disinfectant for equipment and surfaces.


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Properties
- Color: Red to purplish-red.
- Solubility: Soluble in water and ethanol.
- Staining Characteristics: Stains chromatin and cytoplasmic components, providing contrast for better visualization under a microscope.
Preparation
- Ingredients:
- Carmine dye: A natural red dye extracted from the cochineal insect.
- Acetic acid: A colorless liquid organic compound with a pungent smell.
- Procedure:
- Dissolve a specific amount of carmine powder in hot distilled water.
- Add glacial acetic acid to the solution.
- Filter the mixture to remove any undissolved particles.
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Physical Properties:
- Appearance: Colorless, transparent crystals or white powder.
- Solubility: Soluble in water but insoluble in alcohol.
- Melting Point: Decomposes at high temperatures before melting.
Chemical Properties:
- Molecular Formula: KAl(SO₄)₂·12H₂O
- Molecular Weight: 474.39 g/mol (for the dodecahydrate form)
- Acidity: It is slightly acidic in aqueous solution.
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