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Tetrapotassium Pyrophosphate (TKPP)

Tetrapotassium pyrophosphate (TKPP) is a detergent builder, water softener, dispersing agent, chelating agent, buffering agent and emulsifier. It holds applications in cleaning, water treatment, boiler descaling, oil drilling and more.


Solid TKPP is a white conglomerate or grain-like granule. As a liquid, it comes as a clear, odourless solution, soluble in water but insoluble in ethanol.

TKPP is often used as a highly-soluble, low-sodium and environmentally-friendly alternative to sodium acid pyrophosphate (SAPP, also known as sodium pyrophosphate).

A technical grade chemical potassium phosphate derivative, TKPP has excellent chelating capabilities and holds application across cleaning, water treatment, oil and gas and more.

CAS Number
TKPP; Sodium Pyrophosphate; Tetrasodium Phosphate; TSPP
25kg (solid), 25L, 200L, 1000L and bulk transfer (liquid)


Cleaning Chemicals & Detergents

• A soap and detergent builder.
• A water softener and combines magnesium to sequester it from detergents.
• Used to reactivate detergents or soaps that have combined calcium to make insoluble scum.

Water Treatment

• TKPP has a higher solubility in water treatment formulations than sodium derivatives.
• Used in cooling tower water treatment processes as both a corrosion and scale inhibitor.
• Used in boiler descaling to avoid inefficiency, plugged tubes, under-deposit corrosion, hot spots caused by scale build up.

Oil & Gas

• Used in oil drilling fluid and in the mining of ore and clay.
• Prevents scale and corrosion buildup in pipes, pumps and other equipment.

Food Additives

• In food grade format, TKPP has widespread applications as a buffering agent, thickening agent, emulsifier and preservative for extending shelf life.

Textile Chemicals & Dyes

• Dyeing: Used to improve colour fastness and dye absorption.
• Paints and coatings: a levelling agent, sequestrant and pigment dispersant.
• Ceramic and porcelain production: used as a dispersing agent.


• Synthetic rubber production.
• Electroplating: to remove surface oxidation and prepare metal surfaces.
• Concrete production: a retarder for improving workability and controlling setting time.
• Fire extinguishers: An additive in fire retardant formulations.

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


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