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 316
of 2 lbs. 600 c.c. naphthol solution are addedAfresh. For developing, 2,400 grms. Nitrosamine in paste are mixed with 15litres water (18° C.) and 900 grms. hydrochloric acid (32° Tw.). A pale yellowprecipitate is formed, Avhich should dissolve within ten minutes, leaving onlya slight quantity of… … Fig. 67. between 15° and 22° C. For developing the first 2 lbs. yarn, 7 litres of thissolution and 8 litres water are required, and for each further lot 1 litre ofsolution is added. After developing, the yarn is soaped for fifteen minutes at60° C. in a solution of 1,200 grms. neutral soap in 350…
Dyes and dyeing
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