Zirax plc ("Zirax" or the "Company"), the AIM quoted speciality chemical company focused on the development, production and sale of oilfield process chemicals and de-icing solutions is pleased to announce that it has won the contract to supply 15,000 Metric Tonnes ('MT') of calcium chloride based de-icers to Moscow City Council for its 2008/09 winter season.

The Company was notified today that, on 28 May 2008, Pennygold Trading Supplies ('Pennygold') acquired 1,900,000 ordinary shares of 1p each (the 'Ordinary Shares') in the Company.