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 368
d with4Va lbs caustic soda lye 75° T\v;7x/2 ,, boiling water and subsequently6/2 „ cold water are added,then10 „ castor oil soap*I dissolved in50 „ hot water are added and the whole diluted with cold water to20 gallons.If a more yellowish red is desired, the addition of RedDeveloper is omitted,… … *) The preparation of castor oil soap has been described on page 244. 352 Paranitranilinc Red Both Paranitraniline C and Nitrazol C may be used for deve-loping. The following description explains the method of workingwith either product. Developing with Paranitraniline C.In a bucket LiquorA.…
Dyes and dyeing
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