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 145
cidat Ti Tw., to which the permanganate is added in concentrated solution intwo or three diflferent portions. Under these conditions, the yarn does notturn brown, the acid being strong enough to decompose any peroxide ofmanganese which might form, according to the equation— MnOa + H2SO4 = MnS04 +… … % Fig. 36.—Plan of bleach-house with Mather kier. bleaching bath. Manzoni maintains that, in working by this method, a muchsmaller amount of permanganate is necessary than in the old process ; he findsthat half a kilo, of permanganate is sufficient to produce a good ordinary whiteon 100 kilos, of…
Dyes and dyeing
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