• Product Name:Monopotassium phosphate
  • Molecular Formula:KH2PO4
  • Purity:99%
  • Molecular Weight:136.08
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Product Details;

CasNo: 7778-77-0

Molecular Formula: KH2PO4

Appearance: white powder

Buy High Quality 99% Pure Monopotassium phosphate 7778-77-0 Efficient Shipping

  • Molecular Formula:KH2PO4
  • Molecular Weight:136.08
  • Appearance/Colour:white powder 
  • Melting Point:252.6 °C(lit.) 
  • Boiling Point:158oC at 760 mmHg 
  • PSA:90.40000 
  • Density:2.338 g/mL at 25 °C(lit.) 
  • LogP:-0.49040 


Agricutural Grade MKP 0-52-34 Monopotassium Phosphate Fertizlier NPK 00:52:34


Monopotassium phosphate (MKP) is a chemical compound with the formula KH2PO4. It is a soluble salt that consists of potassium cations (K+) and phosphate anions (H2PO4-).



  • Chemical formula: KH2PO4
  • Molecular weight: 136.09 g/mol
  • Appearance: White crystalline powder or granules
  • Solubility: Highly soluble in water
  • pH (1% solution): Approximately 4.5
  • Density: 2.34 g/cm³
  • Melting point: 252.6°C (486.7°F)
  • Boiling point: Decomposes above 400°C (752°F)

Data Sheet:
Here is a general data sheet for monopotassium phosphate:

  • Chemical formula: KH2PO4
  • CAS number: 7778-77-0
  • EC number: 231-913-4
  • Synonyms: Potassium dihydrogen phosphate, Potassium phosphate monobasic
  • Molecular weight: 136.09 g/mol
  • Density: 2.34 g/cm³
  • Solubility in water: Soluble
  • Solubility in other solvents: Insoluble in organic solvents
  • pH: Approximately 4.5 (1% solution)
  • Shelf life: Typically stable for several years if stored properly


  • High solubility: Monopotassium phosphate is highly soluble in water, allowing for easy preparation of solutions.
  • pH buffering: MKP acts as a pH buffer, helping to maintain a stable pH range in various applications.
  • Nutrient source: It provides a source of potassium and phosphate, which are essential nutrients for plant growth.
  • Compatibility: MKP is compatible with most fertilizers and agrochemicals, making it suitable for use in agriculture.
  • Low salt index: It has a low salt index, meaning it has a minimal impact on soil salinity when used as a fertilizer.
  • Versatility: Monopotassium phosphate is used in a wide range of applications, including agriculture, food processing, and laboratory settings.


  • Agriculture: MKP is commonly used as a fertilizer in agricultural practices to provide essential nutrients (potassium and phosphate) to plants. It is especially beneficial for crops that require higher potassium levels, such as fruits, vegetables, and flowering plants.
  • Food industry: Monopotassium phosphate is used as a food additive and a buffering agent in various food processing applications. It helps regulate acidity, improve food texture, and enhance the stability of processed foods.
  • Laboratory use: MKP is employed in laboratory settings as a reagent in the preparation of buffers or culture media for biological and biochemical experiments.
  • Fire extinguishing agents: It is sometimes used in fire extinguishing agents due to its ability to suppress combustion and act as a flame retardant.
  • Industrial applications: Monopotassium phosphate finds applications in industries such as water treatment, metal cleaning, and electroplating, where it acts as a corrosion inhibitor and pH regulator.

Packaging 1kg-15kg packing 2 PE bag inside + 1 foil bag outside in carton
25kg-50kg packing 2 PE bag inside + 1 foil bag outside in drum
Other packing Customized packing
Drum Size D38cm*H60cm or customized, 25 kg/ drum
Shipping 1-50kg International Express Fast and convenient Door to Door
50-500kg Air Transportation Fast and cheap To Air Port
Above 500kg Sea Transportation Cheap and convenient To Port




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