Cobalt Chloride

Starting at: $15.00


Cobalt Chloride
chemical formula: CoCl2·6H2O
( granular )
The most well known use for Cobalt Chloride is an experiment done by most grade-school teachers. Filter paper is dipped into a Cobalt Chloride solution and allowed to dry. Once dry, the paper is blue in color, but when the air becomes humid ( as before an approaching storm ) the paper will turn pink. It's basically a humidity detector. When the paper dries out again, it returns to its blue color. The process can be repeated indefinitely. A very tiny amount goes a long way.

MSDS ( Material Safety Data Sheet )

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