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Topic: 3A sieves discoloring solvents  (Read 2514 times)

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Offline tensor

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3A sieves discoloring solvents
« on: October 18, 2007, 03:25:13 PM »
I have isopropanol and methanol both over 3A sieves that have never been used. At first the solvents looked ok, but then over a few days the isopropanol is pink and the methanol is a light peach color. Why is this?
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