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Explanation: Purification of benzene - Patent Review GB19610028479 19610804- [ Traduire cette page ]It has been proposed to overcome the disadvantages by distilling, so-called "defronting", the benzene immediately it is produced, which eliminates the ... www.wikipatents.com/gb/0925854.html - 50k - En cache - P
xxx:::::::::: Iraq Local time: 18:09 Native speaker of: English PRO pts in category: 40