Potassium carbonate is an inorganic compound with the chemical formula K2CO3. It is an inorganic compound that dissolves in water and often exists in the form of a wet solid. This compound is mainly used in the production of soaps and glass.
This white salt is also known as potash carbonate. Potassium carbonate is widely used in various industries such as the food industry, agricultural industry, and the production of chemical fertilizers, in the production of paints and inks, in the manufacture of chemicals.
Physical and chemical properties:
This alkaline salt appears as a white powder or colorless crystal. it tastes similar to that of table salt.
Potassium carbonate is also known as potash or pearl ash.
This compound is soluble in water but it does not soluble in organic solvents such as ethanol, ether, and acetone.
This compound can absorb moisture from the air, so it has a moist appearance.
|Molar mass||138.205 g/mol|
|Appearance||White, hygroscopic solid|
|Melting Point||891 °C (1,636 °F; 1,164 K)|
|PH (0.1M)||11.5 -11.6|
|Solubility in water||110.3 g/100 mL (20 °C)|
149.2 g/100 mL (100 °C)
|Solubility||3.11 g/100 mL (25 °C) methanol|
Insoluble in alcohol, acetone
Chemical Structure Depiction
Carbonate of potash, dipotassium carbonate, sub-carbonate of potash, pearl ash, potash, salt of tartar, salt of wormwood.
sodium acetate, calcium chloride.
The structure of potassium carbonate:
K2CO3 is an ionic compound. Ionic compounds contain oppositely charged ions and are held together by an electrostatic absorbing force.
In this structure, carbonate anion CO32- in the center to which two potassium cations are attached. This crystal is at a temperature below 47 ° C and is used for organic compounds.
Potassium carbonate production process:
– In the first step, potassium chloride is converted to potassium hydroxide, and in the second step, it reacts with carbon dioxide to produce potassium carbonate.
2 KOH + CO2 → K2CO3 + H2O
-Potassium bicarbonate can be decomposed by heating to obtain potassium carbonate and carbon dioxide:
2 KHCO3 → K2CO3 + H2O + CO2
-The new reaction method takes place in fluidized bed reactors that do not contain water in the final product.
Applications and Uses of Potassium Carbonate:
-One of the most important applications of this compound is in the field of agriculture and the production of agricultural fertilizers. Potassium carbonate is one of the three main nutrients needed by plants. Plant roots are strengthened by this inorganic compound.
This compound is used in the chemical industry as a raw material for the manufacture of chemical compounds.
This inorganic compound is a dryer and is used to dry ketones and alcohols before distillation.
-This compound is used as a cooking ingredient in some countries with certain conditions and amounts. This acidity regulating salt is used in the production of various foods such as chocolate, sweets, and sports supplements.
-The most common use of potassium carbonate is in soap making, which is often soft and liquid.
-It is also used in the textile industry. Potash is widely used for washing and dyeing leather products.
-Potassium carbonate is used to make special glass
Other applications include making glazes for pottery, producing pigments, and inks.
In the glass industry:
This material is mostly used in the glass industry. Glass made of this material has properties such as higher refractive index, higher electrical resistance, and greater efficiency in higher temperature ranges and improves the colors inside the glass.
this combination is used to produce special glass such as TV screen glass, laboratory glasses, and optical lenses.
Reduce water hardness:
Magnesium and calcium are two causes of water hardness, and the use of potassium carbonate prevents the accumulation of calcium and magnesium in water and prevents the deposition of these salts in the piping system. If this substance is used in high doses, it can cause skin irritations and allergies, but in moderate and low concentrations, it will not pose a threat to human health.
Safety information of potassium carbonate:
Potassium carbonate irritates the skin and eyes and causes respiratory problems if inhaled and it can cause inflammation of the skin, eyes, throat, and stomach.
It is very harmful if swallowed because this substance is highly alkaline and causes irritation or corrosion of living tissues.
When working with this combination, observe all safety points.
Packing and storage:
Store in a dry and cool place, away from strong acids with proper ventilation in a tightly closed container.