Early 19th century
Industrial activities begin at the Engis production site (Liège, Belgium).

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Early 20th century
Industrial activities begin at the Puurs production site (Antwerp, Belgium).

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1982
Production activities at the Puurs and Engis sites are merged and the Prayon-Rupel Chemical Company (Prayon for short) is created. Prayon is our parent company and is based in Engis. Main fields of activity: phosphate chemicals (phosphoric acid and derivative salts), and inorganic chemical specialities (zinc oxide, sodium hydrosulphite, fluorine salts and anti-corrosion pigments).

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1983
Founding of Silox, a company producing active zinc oxides.

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1992
We help to create Europhos, a company whose production unit in France (Les Roches de Condrieu, Lyon) becomes the Prayon Group's third production centre in Europe after Engis and Puurs.

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1996
In partnership with our shareholder OCP (Office Chérifien des Phosphates — the world's leading producer of phosphoric acid and also holder of the world's largest reserves of mineral ore), we establishe Emaphos (Morocco), a company specialising in the purification of phosphoric acid.

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1998
We acquire all of the shares in Europhos.

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2000
Prayon Inc. is established and acquires phosphate salt production units in Augusta, Georgia (USA).

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2002
Our zinc and sulphur activities are transferred to our subsidiary Silox, making it a global group with factories in Europe, India and Canada.

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2003
Europhos is incorporated into Prayon SA. The Europhos brand name is retained as a recognised symbol of a range of high-quality products acknowledged by our customers.

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2006
Opening of a new sales office in China.

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2007
Opening of a new sales office in India.

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2008
Cooperation Agreement with ALMIN allowing Prayon to expand its product range, particularly in the field of refractory.

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