"Caustic potash" Quotes from Famous Books
 ... melts below the boiling point of water. It is insoluble in water, but dissolves in alcohol and in ether. When boiled with weak caustic soda it melts but is not dissolved by the alkali; it can, however, be dissolved by boiling with alcoholic caustic potash. This wax is found fairly uniformly distributed over the surface of the cotton fibre, and it is due to this fact that raw cotton is wetted by water only ...
— The Dyeing of Cotton Fabrics - A Practical Handbook for the Dyer and Student • Franklin Beech
... 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
... only 38 grains of charcoal, the combustion occupying about sixteen minutes. Favre and Silbermann adopted the plan of ascertaining the weight of the substances consumed by calculation from the weight of the products of combustion. Carbonic acid was absorbed by caustic potash, as also was carbonic oxide, after having been oxidized to carbonic acid by heated oxide of copper, and the vapor of water was absorbed by concentrated sulphuric acid. The adoption of this system showed that it was in any case necessary to analyze the products of combustion in ...
— Scientific American Supplement, No. 441, June 14, 1884. • Various
... may also be converted into saturated acids by heating to 300 deg.C. with solid caustic potash, which decomposes them into acids of the stearic series with liberation of hydrogen. This reaction, with oleic acid, for example, is generally represented ...
— The Handbook of Soap Manufacture • W. H. Simmons
... 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 |
