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benzene purification
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nubee
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Joined: 18 Feb 2005
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Location: homeless
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benzene purification

 Tue Apr 19, 2005 6:50 am		 Reply with quote
Very pure benzene is best prepared from the commercial product by repeatedly shaking it with small quantities of sulphuric acid to remove thiophen, C4 H4 S, which is not easily removed in any other way. The product is fractionated and then partly frozen. The unfrozen liquid retains most of the impurities, and the crystals separating at 5oC. are very pure benzene.
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TokenJ

Joined: 20 Jun 2005
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re: benzene purification

 Wed Jul 20, 2005 6:58 pm		 Reply with quote
fraction distalation is you best bet. but i have heard of fraction crystaliseation
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TokenJ

Joined: 20 Jun 2005
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re: benzene purification

 Wed Jul 20, 2005 6:59 pm		 Reply with quote
fraction distalation is you best bet. but i have heard of fraction crystaliseation
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