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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: darrin on March 16, 2010, 02:51:08 PM

Title: wet/dry indicators
Post by: darrin on March 16, 2010, 02:51:08 PM

I'm looking for something that will be colored while in a liquid state and clear when dry.  Does anyone know what is in Elmer's brand Spackle or glue stick that is pink when wet and dries white?

Title: Re: wet/dry indicators
Post by: Mitsunobo on March 22, 2010, 04:32:48 PM

An indicator similar to what you described would be blue vitriol or copper sulfate. It is blue when its wet and grey when its dry.