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Potassium Chloride

Other Trading Names:

  • Muriate of Potash (MOP)
  • Potassium Salt
  • Sylvite (when found naturally)
  • Kali Chloratum

CAS Number: 7447-40-7

HS Code: 3104.20

Types of Packaging:

  • 25kg Bag
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Potassium Chloride

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Colorless, elongated, prismatic or cubital crystals or white granular powder, odorless.


>99.9 >98.0 when it contains added substances


Freely soluble in water. Insoluble in ethanol

Heavy Metals (as Pb)


Loss of Drying


Arsenic (AS)

<3 ppm

Lead (Pb)

<2 ppm

Mercury (Hg)


Chemical Description 

Chemical Identity:

  • Chemical Name: Potassium Chloride
  • Chemical Formula: KCl
  • CAS Number: 7447-40-7
  • Molecular Weight: 74.55 g/mol

Physical Properties:

  • Appearance: Colorless or white, odorless crystals or crystalline powder.
  • Density: 1.98 g/cm³
  • Melting Point: 776°C (1429°F)
  • Boiling Point: 1420°C (2588°F)
  • Solubility: Soluble in water, slightly soluble in glycerol, insoluble in ethanol.

Chemical Properties:

  • Taste: Salty taste, similar to table salt.
  • pH of Solution: Neutral (pH 7) when dissolved in water.
  • Stability: Chemically stable under standard conditions.
  • Hygroscopicity: Absorbs moisture from the air.

Safety Information:

  • Toxicity: Generally low toxicity but can be harmful in large doses.
  • Irritation: Can cause skin and eye irritation upon contact.
  • Handling Precautions: Use protective gloves and eyewear when handling.
  • Storage: Store in a cool, dry, well-ventilated area.

Applications and Uses:

  • Agriculture: Major component in fertilizers as a source of potassium.
  • Food Industry: Used as a salt substitute and food preservative.
  • Pharmaceuticals: Treats potassium deficiency, used in IV solutions.
  • Chemical Manufacturing: Precursor for producing other potassium compounds.
  • Oil Drilling: Component in drilling muds.
  • Water Softening: As a regeneration agent in water softeners.
  • Scientific Research: Laboratory reagent.

Environmental Impact:

  • Eco-Friendliness: Non-toxic to the environment at low concentrations.
  • Bioaccumulation: Does not bioaccumulate in organisms.
  • Disposal Methods: Dispose of according to local regulations.

Regulatory Information:

  • HS Code: 3104.20 for international trade classification.
  • Regulations: Subject to regulations depending on usage and region.
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Potassium Chloride