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Topic: What is tars?  (Read 4052 times)

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Offline mir

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What is tars?
« on: October 10, 2006, 05:48:32 PM »
What is tars? And where do it come from? How do we avoid loosing substrate or product to tars?  ???
I have experienced it a lot while extracting arene methyl ethers.
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Offline Bakegaku

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Re: What is tars?
« Reply #1 on: October 10, 2006, 10:11:05 PM »
Tars are a group of viscous liquid hydrocarbons.  They come from heavier fractions of petroleum, similar fossil deposits, I believe certain decay processes and can be produced upon destructional distillation of woods and coal.
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Offline mir

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Re: What is tars?
« Reply #2 on: October 11, 2006, 04:16:28 AM »
I dont mean that tar-thing you get out of the roots of pinetrees. But that ugly lumps of black solids I always get in the seperator funnel when I extract something. Is that a radical reaction of some sort?
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Fragment to fragment clings, and thus they grow
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