A manual of dyeing: for the use of practical dyers, manufacturers, students, and all interested in the art of dyeing (1919)
Knecht, Edmund, 1861-1925, Loewenthal, Richard, Rawson, Christopher · London : C. Griffin · leaf 144
an antichlor, thus pre-venting a tendering of the fibre. Bleaching with Permanganate of Potash.—Permanganate of potash is apowerful oxidising agent, and, as such, is capable of destroying the naturalcolouring matter of cotton. As in bleaching with chlorine, it is necessary toremove the grease and… … Fig. 35.—Plan of bleach-house with ordinary kiers. of acid, or, better still, of magnesium siilphate, to the permanganate, isnecessary to prevent the bath becoming alkaline, with consequent formation ofoxycellulose. In giving up part of its available oxygen, the permanganateyields caustic potash—…
Dyes and dyeing
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