Product size, kg




Potassium carbonate

Carbonate of potash, dipotassium carbonate, sub-carbonate of potash, pearl ash,  salt of wormwood, spagyric salt




 Potassium carbonate 2DPotassium carbonate 3D


Potassium carbonate





Molar mass

138,205 g/mol


2,43 g/cm3


In water:

112 g/100 mL (20 °C) 
156 g/100 mL (100 °C)

In methanol:

3.11 g/100 mL (25 °C) 


It is a white salt with the chemical formula K2CO3. It is freely soluble in water but insoluble in ethanol. The aqueous solution has strong alkaline properties. It can be produced by the absorption of carbon dioxide by potassium hydroxide. Potassium carbonate is used in the manufacture of soap and glass.

In agriculture, potassium carbonate is used as a source of potassium in fertilizers. It accelerates plant growth. It also helps retain water in the soil. The application of this chemical compound strengthens the roots and stems of plants.

In the textile industry It is used as a bleaching agent. It is also widely used to wash and dye wool and for tanning and washing leather products.

In wine production, potassium carbonate is used as a drying agent (to remove water from the air) and to reduce acidity in the production of mead or wine.

In cosmetics, potassium carbonate is used as a milder analogue of sodium hydroxide in the manufacture of soaps. The resulting soaps are milder than sodium soaps. It is also possible to obtain a more liquid soap base using potash caustic. Key INCI function:

  • pH adjuster: Stabilizes the pH of cosmetics

In the glass industry, it is used for the glazing of ceramic pots, to obtain color and transparency of glass.

In the food industry, it is used as a food additive to regulate acidity, as a stabilizer or flavor enhancer, and in combination with sodium carbonate to produce the yellow color of noodles and the fluffiness of Chinese noodles and dishes.

In water purification, it is used as a water softening agent;

In fire extinguishing systems, used as a condensed aerosol in fire extinguishers or as a wood preservative/retardant. The impregnation of wood with potassium carbonate produces a porous structure on the surface as it heats up, which increases the wood's ignition temperature to 900C compared to the natural ignition temperature of wood.

In the metalworking industry, potassium carbonate is used as a component of welding fluxes. It is commonly used for arc welding, e.g. as a component of electrode coatings.

In animal husbandry, potassium carbonate is used as an ingredient in animal feed to enrich the feed with potassium and at the same time reduce the acidity of the feed.


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*- The pictures of the goods may not correspond to the actual appearance, color, assembly or shape of the goods and their packaging. The information in the product description is of a general nature and may not correspond to the information on the packaging of the product and may not be the exact use of the product. The information given on the stocks and prices of goods may, in certain cases, differ from the actual prices and stocks of goods

Signal word: Caution

Hazard icons:

Danger phrases:

H315 Irritating to skin

H319 Causes severe eye irritation

H335 May cause respiratory irritation

Precautionary statements:

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353 IN CASE OF CONTACT WITH SKIN (or hair): immediately remove all contaminated clothing. Wash skin with water [or spray].

P305+P351+P338 IN EYES: wash gently with water for several minutes. Remove contact lenses, if present and if easy to do so. Continue washing eyes.

P310 Seek medical attention immediately.


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