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what is forerun in a distillation process? Why do we discard forerun when distilling?

2007-10-02 07:19:04 · 2 answers · asked by Anonymous in Science & Mathematics Chemistry

2 answers

This is the first little bit of distillate that comes over below the boiling point of the compound desired. It contains low-boiling impurities, so discard it. Keep the "center cut." Likewise, high-molecular weight impurities cause the boiling point to rise at the end.

2007-10-02 07:24:09 · answer #1 · answered by steve_geo1 7 · 1 0

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2016-03-13 06:43:34 · answer #2 · answered by ? 2 · 0 2

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