MadSci Network: Chemistry
Query:

Re: What is the blue substance created in electrolosys?

Date: Mon Apr 24 11:03:09 2000
Posted By: Kai Bester, Post-doc/Fellow, Environmental Science, Institute for Reference Materials and Measurements
Area of science: Chemistry
ID: 955313141.Ch
Message:

Now this is a bit puzzling, as little data is available.

I assume the salt is sodium chloride (Normal salt as supplied for e.g. 
cooking?) I also assume the wires are copper wires and are in contact with 
the solution?

If this is so, the blue might be copper chloride (should be blue-greenish)
or, if sulfate is present, blue as copper sulfate may be formed.

I also assume "short" means something like an hour? If it has been days, 
algae growth might be considered.

So:

use sulfate free salt, carefully keep the wire from contact with the
solution.

Have fun.

Kai Bester




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