Artificial dye-stuffs; their nature, manufacture, and uses (1917)
Ramsey, Albert R. J, Weston, H. Claude (Hubert Claude) · London, Routledge; New York, Dutton · leaf 50
fine stream, the agitators, the speed of which isabout sixty revolutions a minute, keeping the contentsof the nitrating vessel constantly stirred. The mixedacids employed are made up of 6,600 lbs. of sulphuricacid (H2SO4) and 5,000 lbs. of nitric acid (HNO,),which are thoroughly mixed by means of… … 36 ANILINE AND THE AZO DYE-STUFFS nitration is in progress the temperature of the mixturein the nitrating pan should not be allowed to rise above60° C, and if it exceeds this at any time, the flow ofmixed acids should be retarded so as to keep thetemperature within the stated limit. The agitation…
Dyes and dyeing
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