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Trisodium Phosphate

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CAS Number


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Other Names

Tertiary Sodium Phosphate
Phosphoric acid, trisodium salt
Sodium Orthophosphate, Tertiary
Tribasic sodium phosphate
Sodium orthophosphate
Sodium Phosphate, tribasic
Trisodium Orthophosphate
Tribasic sodium orthophosphate
Trisodium Phosphate Hexahydrate
Sodium tertiary phosphate
Trisodium Phosphate (Anhydrous)

Trisodium Phosphate

About Trisodium Phosphate

Trisodium Phosphate, commonly abbreviated as TSP, is a chemical compound with the formula Na₃PO₄. It is an inorganic compound and a salt of sodium and phosphate. TSP is typically found as a white, crystalline solid that is highly soluble in water. It is produced through the reaction of phosphoric acid with sodium hydroxide. TSP has a wide range of applications due to its ability to act as a cleaning agent, food additive, and industrial chemical.

Cleaning Agent

TSP is a powerful cleaning agent and degreaser. It is commonly used in household cleaning products, particularly for removing grease and grime from surfaces such as walls, floors, and kitchen appliances. It is effective at cutting through tough stains and residues.

Paint and Surface Preparation

TSP is used in painting and surface preparation as a deglosser and surface cleaner. It helps improve paint adhesion and prepares surfaces for painting or wallpapering.

Food Additive

In the food industry, TSP is used as a food additive, primarily as an emulsifying agent and pH regulator. It is commonly found in certain processed foods, where it assists with texture, color, and pH control.

Industrial Applications

TSP is used in various industrial processes, including water treatment, as a buffer in chemical reactions, and as a flux in soldering. It also finds use in detergents and cleaning formulations for industrial settings.

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