Disclosure of Share Buy-Back Transactions Made by Air Liquide on Its Own Shares between August 28 to September 4, 2007

Regulatory News: In accordance with the regulations governing Share buy-back programs, Air Liquide (Paris:AI) hereby declares the following transactions executed on its own shares : Trading date   Number of shares   Weighted average price   Total amount € 28 August 65,000 90,73 € 5,897,580 € 29 August 35,000 90,69 € 3,174,290 € 31 August 54,371 92,99 € 5,055,959 € 3 September 42,500 92,65 € 3,937,706 € 4 September 35,000 91,97 € 3,218,835 € Total period 231,871 91,79 € 21,284,370 € With nearly 37,000 employees in 72 countries, Air Liquide is a world leader in industrial and medical gases and related services, The Group offers innovative solutions based on constantly enhanced technologies and produces air gases (oxygen, nitrogen, argon, rare gases…) and many other gases including hydrogen, The Group contributes to the manufacturing of many everyday products: bubbles in sparkling beverages, protective atmosphere for packed foods, oxygen for hospitals and homecare patients, ultra-pure gases for the semiconductor industry, hydrogen to desulfurize fuels,,, Air Liquide is committed to sustainable development and helps to protect life, Founded in 1902, Air Liquide has successfully developed a long-term relationship with its shareholders built on trust and transparency and guided by the principles of corporate governance, Since the publication of its first consolidated financial statements in 1971, Air Liquide has posted strong and steady earnings growth, Sales in 2006 totaled 10,949 million euros, with sales outside France accounting for almost 80%, Air Liquide is listed on the Paris stock exchange and is a component of the CAC 40 and Eurostoxx 50 indices (ISIN code FR 0000120073). www,airliquide,com