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Or magenta treated with a bleaching-agent in just sufficient quantity to decolorise it is invisible when used for writing.
2
It is little liable to become rancid, and is completely decolorised by animal charcoal.
3
A solution of permanganate of potassium is decolorised by a ferrous salt, but not by a ferric one.
4
To the development, in the liquids, of various substances, capable of exerting a decolorising influence on the coloring matter.
5
The blues of cobalt, on whatever base they may be prepared, are distinguished from native and artificial ultramarines by not being decolorised by acids.