Potassium Phosphate Dibasic Anhydrous, ACS Grade *


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About Potassium Phosphate Dibasic Anhydrous, ACS Grade

Potassium phosphate dibasic anhydrous, often abbreviated as K2HPO4, is a chemical compound composed of potassium (K+), hydrogen (H+), and phosphate (PO43-) ions. The "anhydrous" designation indicates that it does not contain any water molecules within its crystal structure.

Common Uses and Applications

  • Buffering Agent: Potassium phosphate dibasic anhydrous is commonly used as a buffering agent in various biochemical and molecular biology applications. It helps maintain a stable pH in solutions, particularly in the physiological range.
  • Fertilizer: It is used in agriculture as a source of potassium and phosphorus, essential nutrients for plant growth.
  • Food Additive: It may be used as a food additive in certain products, primarily as a pH regulator or stabilizer.
  • Laboratory Reagent: It is used as a reagent in various chemical and biochemical experiments and analyses.


Chemistry Table


Potassium Phosphate Dibasic Anhydrous, ACS Grade Specifications

Assay Min 98.0%
pH of a 5% Solution @ 25°C 8.5-9.6
Insoluble Matter 0.01%
Loss on Drying @ 105°C 1.0%
Chloride 0.003%
Nitrogen Compounds 0.001%
Sulfate 0.005%
Heavy Metals (as Pb) 5 ppm
Iron 0.001%
Sodium 0.05%

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