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 149
only a small portion of theyarn lies beneath the surface of the liquid, the rest being exposed to the air,the carbonic acid of which liberates free hypochlorous acid from the bleachingliquor, and thus assists materially in the bleaching.3 Sour with sulphuric acid 1° Tw. Wash well. 4. Scald {i.e.,… … Figs. 37 and 38. —Haubolds reeling machine for linen 5ara. 8. Dip—i.e., steep two hours—in bleaching powder ^° Tw. 9. Sour in sulphuric acid |° Tw. 10. Scald for three to four hours with 1 to 1|^ per cent, soda ash. 11. Dip in bleaching powder J^° Tw. 12. Sour in sulphuric acid |° Tw. Wash well and…
Dyes and dyeing
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