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Dipotassium Phosphate

A versatile inorganic compound with common application in fertilisers, water treatment, detergents and food production.


Water soluble and with high phosphorus and potassium content, the predominant industrial use for DKP is fertiliser manufacture.

It is also valued for its corrosion inhibition, buffering and chelating properties, with uses across water treatment and detergents. As a food grade material, it also has extensive use in food production.

DKP appears as a white or colourless water-soluble salt. Our technical grade DKP is available as a solution, whilst our food grade DKP is a powder.

CAS Number
EC Number
Potassium monohydrogen phosphate, Phosphoric acid dipotassium salt, Potassium phosphate dibasic
25kg (solid); 25L, 200L, 1000L, bulk transfer (liquid)
Chemical formula



• Fertiliser manufacture: A primary or secondary source of phosphorus and potassium for promoting plant health

Cleaning Chemicals & Detergents

• Detergent manufacture: Buffering agent, water softener and chelating agent to improve product efficiency and effectiveness

Farm & Livestock

• Animal feeds: A source of potassium and phosphorus

Food Additives

• Emulsifier, stabiliser, buffering and chelating agent: Improves texture, flavour and shelf life of cheeses, dry powder beverages, pharmaceutical products, mineral supplements and more
• Nutrition: In health and fitness products; DKP is a source of potassium and plays a role in adenosine triphosphate (ATP) production, a molecule required for energy

Healthcare Chemicals

• Pharmaceuticals: Buffering agent in many formulations

Water Treatment

• Corrosion inhibition: Chelates metal ions prevent scale buildup in pipes, boilers, and other water-carrying systems and equipment
• Buffering agent: Stabilises water pH


• Cosmetics: Buffering agent in formulations.
• Laboratories: Buffering agent for solution preparation.

Product info download

We are a leading manufacturer, supplier and distributor of dipotassium phosphate, as well as a range of other commodity chemicals for every industry sector.

Since 1973, we have been trusted by thousands of customers across the UK and Europe to provide the highest standard of products and service.

Please note: We are unable to sell chemicals to members of the public.


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