"Caustic potash" Quotes from Famous Books
 ... passes over. Somewhat later, they found that it could be prepared from diazobenzene imide, provided a nitro group were present in the ortho or para position to the diazo group. The para-nitro compound is dropped slowly into a cold solution of one part of caustic potash in ten parts of absolute alcohol; the solution becomes dark red in colour and is then warmed for two days on the water bath. After the greater portion of the alcohol has distilled off, the solution is acidified with sulphuric acid and the azoimide distilled over. The yield obtained ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 - "Austria, Lower" to "Bacon" • Various
... of modifying the filaments of flax and hemp so as to convert them into cotton is by no means a new one. As long ago as 1747 it was proposed to convert flax into cotton by boiling it in a solution of caustic potash, and subsequently washing it with soap; and in 1775 Lady Moira, aided by T.B. Bailey, actually converted some refuse flax into cotton by boiling it in alkali. The result was, that the fibres seemed to be set at liberty from each other; after which it was carded on cotton cards, ...
— Atlantic Monthly, Vol. 8, No. 46, August, 1861 • Various |
