The dyeing of cotton and other vegetable fibres with the dyestuffs of Leopold Cassella & Co. Frankfort o. M (1902)
Leopold Cassella & Co · Frankfort o.M. : Leopold Cassella & Co. · leaf 308
t been obtained, two more passages aregiven. For dyeing subsequent lots, the dye-bath is replenished with: -4/0 Diamine Black BH J> weight of the warps5 cryst. Glaubers salt i calculateJ. weightto :alculated on the dryof the wbe dyed. The Dyeing of Cotton Warps, 291 Diazotising. The warps are… … Two small wooden casks I and II are placed above the dia-zotising vat; one of these casks contains the dissolved nitrite, whilstthe other is filled with dilute hydrochloric acid. For 100 lbs of warps are used: 3 lbs nitrite of soda dissolved in10 gallons waterand10 lbs hydrochloric acid mixed…
Dyes and dyeing
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