Cloud Chamber Solvents: Identifying Mystery Liquid

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Discussion Overview

The discussion revolves around identifying a mysterious purple liquid observed in a cloud chamber. Participants explore potential causes and compositions of the liquid, considering the interaction between solvents and materials used in the chamber's construction.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant observed a purple, flammable liquid pooling at the bottom of their cloud chamber, suspecting it may be a result of solvent interaction between isopropyl alcohol and difluoroethane.
  • Another participant inquires about the presence of a dark background paper in the chamber setup.
  • A participant describes their cloud chamber construction, noting that a previous version had air leaks and that the purple liquid did not appear in a new, more airtight design.
  • One participant suggests that the purple color might be due to something extracted from the sponge used in the chamber.
  • Another participant questions the extraction theory, pointing out that the purple liquid only appeared in the chamber with air leaks, while the improved version did not show the same issue.

Areas of Agreement / Disagreement

Participants express differing views on the cause of the purple liquid, with some proposing it may be due to solvent interactions and others suggesting it could be related to the sponge material. The discussion remains unresolved with multiple competing hypotheses.

Contextual Notes

The discussion highlights uncertainties regarding the chemical interactions at play, the role of the chamber's construction, and the specific materials involved. Assumptions about the source of the purple liquid and the conditions under which it appears are not fully clarified.

Thundagere
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I recently observed a liquid pooling at the bottom of my cloud chamber. It was purple in color and rather odd. It was certainly flammable, which leads me to believe that it was a result of solventing between the supersaturated alcohol and the canned air used for my chamber.
http://imageshack.us/a/img525/7906/20121122131134.th.jpg
I'm not quite sure what it is. I know that it was probably a combination of the Isopropyl alcohol and the difluroethane, but I'm not sure on this. Could anyone help me out?
 
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Does your cloud chamber have a dark background paper?
 
THe one that I was using had the pain spray painted onto it. It was essentially a jar, with a metal top. The sponge was attached to the metal, and the outside bottom of the jar was spray painted black.
Incidentally, I found out that one had air leaks. I made a new one with sheet metal and a plastic box. The purple liquid did not appear.
 
Perhaps the purple is something extracted from the sponge.
 
But why would it only be extracted from the sponge in an air leak? In the good one, nothing showed up.
 

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