STATE OF FIBRES AND ACTION OF ASSISTANTS 89 The influence of time on the absorption of sulphuric acid in the cold (4°C.) is shown in the follow- ing curve. (Mills and Takamine.) … Time of immersion. INFLUENCE OF TIME ON ABSORPTION OF ACID. [OH2. 250 cc.: Wool 2.61 grms.: H2S04.6625 grms. Time unit £ hour.] Action of Acids in Dyeing. Acid colours.—The generally accepted theory here is that the sodium salts of the sulphonic acids are decomposed, and the dye acids set free.…
Dyeing · Dyes · General chemistry · Dying · Chemistry
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