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 428
0). One mole-cule of ferric sulphate requires the same amount of hydrosulphite for reductionas one molecule of copper sulphate. Alumina may be detected in ferrous sulphate by boiling with addition ofsulphuric and nitric acids to oxidise the iron, and adding an excess of purecaustic soda. The liquid… … Fig. 118. 794 ^ MANUAL OF DYEING. precipitate will be obtained. The latter may be filtered off, washed, dried;,ignited, and weighed as Al.^Og. Acetate of Iron is sold in solution under the names of iron liquor, black-liquor, and pyrolignite of iron. The best practical method of ascertaining the…
Dyes and dyeing
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