Potassium Carbonate

Other Trading Names:

  • Potash
  • Kaliumcarbonat
  • Dipotassiumcarbonate 

CAS Number: 584-08-7

HS Code: 283640

Types of Packaging:

  • 25kg PP/PE bag
Inquiry right-arrow $100.00
Availability: In stock
Potassium Carbonate

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Test Item


K2CO3 % ≥


KCL % ≤


K2SO4 %  ≤


 Fe     %  ≤


Water insoluble  %  ≤


Heating loss  %  ≤


Chemical Description

  • Potassium carbonate (molecular formula: K2CO3), also known as potash or pearl ash, appears as a white powder or as colorless solid crystal with salty taste and delicacies.
  • It can be dissolved in water to form a strongly alkaline solution. However, it is insoluble in organic solvents such as ethanol. It has wide applications.
  • For example, it can be used as a drying agent, buffering agent and a source of potassium in the laboratory.
  • It can also be used for the manufacturing of fire extinguishers, soap, glass, and softened water. In addition, it is also used during the production of cocoa powder to balance pH.
  • Moreover, it can be supplied to effervescent tablets which can conveniently provide potassium when there are low levels of potassium in the blood for patients caused by various kinds of factors.
  • In industry, potassium carbonate is manufactured through first performing electrolysis of potassium chloride to generate potassium hydroxide, followed by reaction with carbon dioxide to derive the product. It is toxic upon eye contact, inhalation and ingestion.
  • For rats, it has an oral LD50 being 1870 mg/kg. It has chronic effects on humans, causing damage to the mucous membranes, skin, and eyes.
  • It belongs to monoclinics, and is white powder or granular crystal. It is easily soluble in water but insoluble in alcohol and ether.
  • Potassium carbonate can serve as an effective alkaline agent and dough conditioner and is capable of hindering the fermentation process in noodles.
  • It can be applied to pasta food, where its application quantity must be in accordance with production requirements. In addition, potassium carbonate can be used for the production of optical glass, as it enhances the transparency, strength, and refractive coefficient of the material.
  • It is also useful as a welding electrode, preventing arc-breaking during welding. Further applications of potassium carbonate include its utility as a vat dye and as a white discharging agent for ice dyeing.
  • It can be utilized as an absorbent for removing carbon dioxide and hydrogen sulfide, and quantities can be mixed with soda ash to create a dry powder extinguishing agent.
  • Potassium carbonate is a white, crystalline, salt that forms basic aqueous solutions used in the production of fertilizer, glass, ceramics, explosives, soaps, chemicals, and wool treatments.
  • It was the main compound once referred to as potash, although the term today is not reserved exclusively for potassium carbonate, but for several potassium salts.
  • In the fertilizer industry, potash refers to potassium oxide, K2O, rather than potassium carbonate. Pearlash is a purer form of potash made by heating potash to remove impurities.
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Potassium Carbonate