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Phosphate esters are 100% active anionic surfactants which are produced as the free acid by either of two chemical routes.

Monoesters are produced by the reaction of either alcohols, alcohol ethoxylates or phenyl ethoxylates with polyphosphoric acid, whereas mixtures of mono and diesters are produced by reaction of the same feedstock with phosphorous pentoxide.

Phosphate esters are highly versatile surfactants offering a wide range of properties and applications. The main advantages of phosphate esters over many other surfactants are their alkali stability and solubility. They are excellent hydrotropes and are effective coupling agents which give outstanding wetting, emulsification and detergency. As such they are used widely in emulsion polymerization, textile auxiliaries, maintenance chemicals, metal finishing, and many other applications.

Phosphate esters have a unique range of properties which are exploited in the production of specialized chemical processing aids for industry. Being stable in high concentrations of alkali, they are especially useful in household and maintenance cleaning products, where high active heavy duty products are required

Due to their alkali tolerance, phosphate esters have specific uses in heavy duty alkaline cleaners. As well as having excellent detergent properties, phosphate esters also possess hydrotroping properties which assist in the formulation of high active alkaline cleaners, oven cleaners and floor cleaners/strippers.