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Potassium Carbonate

Product Information

CAS Number

584-08-7

Additive Number

501

Safety Data Sheets Download

Other Names

Potassium carbonate, Liquid
Potassium carbonate 15%
Potassium carbonate, 50% Solution
Carbonic acid, dipotassium salt, aqueous solution
Benfield V2o5
Pearl Ash
Vanadium Pentoxide 6%
Potash
Carbonic Acid, Dipotassium Salt

Potassium Carbonate

About Potassium Carbonate

Potassium carbonate (K₂CO₃) is an inorganic compound that consists of potassium, carbon, and oxygen. It is a mild, alkaline salt commonly used in various industrial processes.

Form: It typically comes as a white, granular powder or crystals, and is highly soluble in water.

Potassium Carbonate Uses

Glass and Ceramics Production

Potassium Carbonate is widely used in the glass industry to manufacture specialty and optical glass. It acts as a fluxing agent, lowering the melting point of silica and improving the clarity, strength, and durability of the final product. In ceramics, it enhances glaze adhesion and provides a smooth, glossy finish while contributing to improved thermal expansion control.

Food and Beverage Industry

In the food sector, Potassium Carbonate serves as a buffering agent, acidity regulator, and leavening agent. It is used in cocoa and chocolate processing to neutralise acidity, in noodle and pretzel production to enhance texture, and as a mineral fortifier in certain beverages. Its recognition as a safe food additive makes it valuable across global food manufacturing systems.

Detergents and Cleaning Agents

Potassium Carbonate is an important ingredient in liquid soaps and detergents, where it functions as a mild alkali that aids in grease removal and pH stabilisation. It helps saponify fats and oils, contributing to effective cleaning without harsh residues. Its water softening properties also enhance detergent performance in hard-water conditions.

Agriculture and Fertilisers

In agriculture, Potassium Carbonate is used as a potassium source in fertiliser formulations. It provides an essential macronutrient that supports plant growth, fruit development, and stress tolerance. Its chloride-free composition makes it particularly suitable for crops sensitive to saline conditions, such as tobacco, grapes, and certain horticultural species.

Chemical Manufacturing and Industrial Applications

Potassium Carbonate acts as a precursor or intermediate in the production of potassium-based chemicals, including potassium silicates, phosphates, and soaps. It is also employed in the manufacture of dyes, inks, and photographic chemicals, as well as in gas scrubbing systems to remove acidic impurities such as carbon dioxide and hydrogen sulfide.

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