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393567489捐助贵宾 (正式写手)
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afterthe addention is completed, TFSNB product is isolated and purified by first forming the sodium salt and then separating such salt from the organics,dissolving the separated salt in water ,washing the aqueous solution with dichloromethane and then acidifying such solution to separate the product as a denser-than-water milky liquid.subsequent vacuum distillation results in TFSNB as a colorless liquid having a a>99% putity. [ Last edited by 393567489 on 2009-12-31 at 11:34 ] |
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2楼2009-12-31 11:44:47