Calvert, F. (Frederick) Crace', 1819-1873, Stenhouse, John, Groves, Charles Edward, 1841-1920 · Manchester : Palmer & Howe · leaf 255
COCHINEAL PINK, STEAM STYLE. Woollen goods may be dyed, and cotton and silk goodsprinted also in purple and mauve colours, with a peculiarcompound of the colouring matter of cochineal with am-monia, known in the trade as ammoniacal cochineal. Thissample has been supplied by Messrs. Z. Heys and… … AMMONIACAL COCHINEAL. 218 DYEING AND CALICO PRINTING. AMMONIACAL Cochineal.—When one part of groundcochineal is left in contact with three parts of ammonia forseveral weeks, a chemical action ensues between the car-minic acid and the ammonia, the latter losing hydrogenand the former oxygen, so that…
Dyes and dyeing · Calico-printing
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