Potassium Metabisulfite

Potassium Metabisulfite

(CDE REGISTRATION NO.: F20240000174)

Name: Potassium Metabisulfite

Other name: Potassium Pyrosulfite

M.F.: K₂S₂O₅

M.W.: 222.32 (Average value)

CAS No.: 16731-55-8 

Packaging:  1kg/bag/carton; 5kg/bag/carton; 20kg/bag/drum

Appearance: 

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

Quality Standard:  USP2024; EP11.0

Application: 

It can be used as an antioxidant in medicines, food additives, and preservatives in cosmetics.

Incompatibility:

Potassium Metabisulfite is incompatible with strong acids, water, and most common metals. It can react with nitrite and sodium nitrate at room temperature, sometimes producing flames; and explosions can occur when there is water; it reacts with acid to escape sulfur dioxide. Potassium Metabisulfite can also fade some colorants and affect the stability of vitamins.

Safety:The dosage as an antioxidant is generally considered safe. Exceeding the recommended dosage may cause skin damage, such as adverse reactions, allergies, and irritation.

Storage:

Potassium Metabisulfite decomposes at temperatures above 150°C. In the air, especially in a humid environment, it is easily oxidized to potassium sulfate. In aqueous solution, Potassium Metabisulfite generates potassium bisulfite, which has a strong reducing ability.

Preserve in well-fitted, tight containers, avoid exposure to excessive heat, protected from light.