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Chemical database: Potassium carbonate

chemistry tutorials - potassium carbonate

Chemical formula K2CO3
Molar mass 138.20 g mol -1
Density 2.29 g cm -3
Melting point 891 °C
Boiling point decomposition
Solubility 112 g in 100 mL H2O (20 °C)
CAS number 584-08-7
Hazards chemistry tutorials - potassium carbonate - additional data: (R:22-36/37/38)(S:26-36)

Potassium carbonate is a salt which comes in form of a white solid at standard conditions. It is used in the production of soap, glass, and certain types of ceramics. Potassium carbonate is sometimes used as a drying agent, especially in organic chemistry. It is also used in the production of certain types of alcoholic beverages. In certain cases it can also serve as a substitute for ordinary baking powder, which contains sodium bicarbonate. Potassium carbonate is also used for softening hard water and, in form of an aqueous solution, for extinguishing certain types of fire.

Potassium carbonate could possibly be found in firms which manufacture glass and ceramics. Shops which sell equipment for the production of soap could also sell this compound. Since potassium carbonate is not a particularly dangerous compound, ordering it from chemical selling companies shouldn't be a problem. Alternatively, it can also be obtained relatively simply, by extracting it from wood ash.


  Acetic acid
  Acetylsalicylic acid
  Ammonium nitrate
  Calcium carbide
  Calcium carbonate
  Calcium hydroxide
  Calcium oxide
  Hydrochloric acid
  Hydrogen peroxide
  Iron(III) oxide
  Lithium carbonate
  Methyl ethyl ketone
  Nitric acid
  Potassium carbonate
  Potassium chlorate
  Potassium chloride
  Potassium metabisulphite
  Potassium nitrate
  Potassium permanganate
  Sodium acetate
  Sodium benzoate
  Sodium bicarbonate
  Sodium bromide
  Sodium carbonate
  Sodium chloride
  Sodium hydroxide
  Sodium hypochlorite
  Sulphuric acid
  Trichloroisocyanuric acid