Beech, Franklin · London, Scott, Greenwood, New York, Van Nostrand co · leaf 22
f the wool and so make it feelharsher. Strong acids have a disintegrating action on thewool fibre. There is a very considerable difference betweenthe action of acids on wool and on cotton, and this differenceof action is taken advantage of in the woollen industry toseparate cotton from wool by the… … Fig. 5.—Wool Fibre Heated with Acid. form of a powder, while the wool is not affected, sulphuricacid is used very largely in dyeing wool with the acid- andazo-colouring matters. Nitric acid affects wool in a very similar manner to theacids named above when used in a dilute form; if strong itgives a…
Dyes and dyeing -- Wool
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