Or magenta treated with a bleaching-agent in just sufficient quantity to decolorise it is invisible when used for writing.

It is little liable to become rancid, and is completely decolorised by animal charcoal.

A solution of permanganate of potassium is decolorised by a ferrous salt, but not by a ferric one.

To the development, in the liquids, of various substances, capable of exerting a decolorising influence on the coloring matter.

The blues of cobalt, on whatever base they may be prepared, are distinguished from native and artificial ultramarines by not being decolorised by acids.