From silicic acid, by evaporation with hydrochloric acid.
"Scientific American Supplement, No. 324, March 18, 1882" by Various
This is the fluor acid which volatilises the siliceous substance.
"Theory of the Earth, Volume 1 (of 4)" by James Hutton
It consists of clay, sand, silicic acid and gypsum.
"Scientific American Supplement, No. 821, Sep. 26, 1891" by Various
Silicic acid is not only indispensible to the growth of hair, but it forms a direct connection between blood and nerve tissues.
"Valere Aude" by Louis Dechmann
Water reacts most vigorously with it, producing silicic acid, and liberating hydrogen selenide.
"Scientific American Supplement, No. 841, February 13, 1892" by Various
The silicic acid remains insoluble.
"A System of Instruction in the Practical Use of the Blowpipe" by Anonymous
As stated in the discussion of fluorine, it is formed when hydrofluoric acid acts upon silicon dioxide or a silicate.
"An Elementary Study of Chemistry" by William McPherson
For yellow soaps, containing a low percentage of fatty acids, solutions of silicate of soda of varying strengths are generally used.
"The Handbook of Soap Manufacture" by W. H. Simmons
A very peculiar property of this acid is its union with siliceous earths, which I have already mentioned.
"Conversations on Chemistry, V. 1-2" by Jane Marcet
It is not only on the basic substances upon which it acts, but also on the phosphoric and silicic acids, which it sets free.
"Manures and the principles of manuring" by Charles Morton Aikman
Pour the silicic acid solution into a large porcelain basin.
"The Elements of Bacteriological Technique" by John William Henry Eyre
Gels may be either rigid, as in the case of those of silicic acid, etc., or elastic, as are those of gelatin, egg-albumin, agar-agar, etc.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
Siliceous earth is corroded by this acid.
"Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry" by Joseph Priestley
At the commencement of this article, it was stated that silicic acid, or silica, could be made soluble in water.
"British Manufacturing Industries" by L. Arnoux