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4,4-dimethylenebiphenyldiphosphonic acid was pre-pared by hydrolyzing 4,4 -bis-(diethoxyphosphono-methyl)-diphenyl with concentrated hydrochloric acid for 96 h under refluxing. |
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zhtear99: ½ð±Ò+1, ¸ÐлÈÈÐÄÓ¦Öú£¬»¶Ó³£À´~ 2013-01-02 18:04:03
aslh: ½ð±Ò+1, ÎÒÖ÷ÒªÊÇÏëÖªµÀÓ¢ÎÄÎïÖʵľßÌåÃû³Æ 2013-01-02 18:16:10
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aslh: ½ð±Ò+1, ÎÒÖ÷ÒªÊÇÏëÖªµÀÓ¢ÎÄÎïÖʵľßÌåÃû³Æ 2013-01-02 18:16:10
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2Â¥2013-01-02 14:13:34
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3Â¥2013-01-02 18:14:52
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4Â¥2013-01-05 11:32:36
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