Bleaching Mineral-Stained Maple

The effect of various bleaching agents on mineral-stained maple was studied. It was not possible to eliminate the stain without bleaching the wood to a very light color. However, with peracetic acid and sodium chlorite under certain conditions it was possible to lighten the color of the stain without greatly changing the color of the adjacent wood. With most other bleaching agents the stain was more difficult to bleach than the “clear” wood. Some success was attained by bleaching the stained area only, using peracetic acid in a gel of carboxylmethylcellulose.

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