High-Purity Dibasic and Monobasic Potassium Phosphates

Potassium phosphates are the salts of potassium and phosphate ions. The primary forms of potassium phosphate include monopotassium phosphate and dipotassium phosphate, both of which are used for myriad applications in the manufacturing and food industries.

Monopotassium Phosphate

Monopotassium phosphate is known by several names. It’s commonly referred to as KDP, MKP, or monobasic potassium phosphate. The compound can exist in several polymorphs, and single crystals are paraelectric at room temperature. Once cooled below −150 °C they become ferroelectric.

Monobasic potassium phosphate is an integral component of some of the most important commercial fertilizers on the planet. Fertilizer-grade MKP powder is often used as a nutrient source for greenhouses and hydroponic farms.

In its crystallized form, the compound has notable non-linear properties. It’s frequently used to build optical modulators and non-linear optics like second-generation harmonics. Monopotassium phosphate is usually supplied as a white granular powder or in the form of colorless crystals.

Dipotassium Phosphate

Dipotassium phosphate is also known as dibasic potassium phosphate. It’s formed by the stoichiometric reaction of phosphoric acid with potassium hydroxide. It’s a highly water-soluble salt and is typically supplied as a white, granular powder.

Food grade dibasic potassium phosphate is used as a buffering agent. It is commonly used in food processing, particularly for dry powder beverages and as a mineral supplement. It is also used as a stabilizer for non-dairy creamers to prevent coagulation. It has several pharmacological uses including being a humectant and serving as a nutrient for antibiotic production.

Like monobasic potassium phosphate, dipotassium phosphate is also used in the production of commercial fertilizers.

Potassium Phosphate from Noah Chemicals

Noah Chemicals is a leading American chemicals supplier. Our online catalog offers a staggering array of high-purity chemicals and chemical compounds in a wide variety of amounts, including potassium phosphate.

We currently offer potassium phosphate monobasic as an ACS Reagent grade powder. Research orders are available in amounts as small as 5 KG and bulk orders are available in amounts ranging from 250 KG to 5,000 KG, and larger upon request.

Noah Chemicals also offers potassium phosphate dibasic in ACS Reagent grade powder form. Research orders are available in quantities of 5 KG and 25 KG and bulk orders are available in volumes of 200 KG and 1,000 KG, although special bulk orders are available upon request.


For more information on the custom chemical services available from Noah Tech, reach out to our in-house chemists today using this form.


To place an order for potassium phosphate directly, start by browsing our online chemicals catalog.



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