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Updated: May 5, 2025
The assistant dashed a few drops of water on the electrodes. The sickish odour increased tremendously. I felt myself almost going, but with an effort I again roused myself. I wondered how Craig stood the fumes, for I suffered an intense headache and nausea. "Stop!" Craig thundered. "There's enough cyanogen in this room already.
To the large manufacturer it may be worth considering whether some other metallo-cyanuret, formed in a similar manner to the ferrocyanuret, might not be more advantageously employed, because the residue of the process last described contains a large quantity of cyanogen which the acid is unable to set free.
In the '40's, Bunsen, the German chemist, combined oxide of cacodyl with cyanogen, a radical of prussic acid, producing cyanide of cacodyl, or diniethyl arsine cyanide. As both of its components are of the deadliest description, it is extremely dangerous to make. It can be made only in the open air, and not without the most extreme precaution known to science. Mr.
The method, though inexpensive, yet seems to have been abandoned for some reason, and I am not aware that it is now employed anywhere. Sch. Mines Quarterly. The elements of cyanogen, combined with sulphur, form a salt radical, sulphocyanogen, C NS , which is expressed by the symbol Csy.
Several years earlier than this the way had been paved for the study of organic substances by Gay-Lussac's discovery, made in 1815, that a certain compound of carbon and nitrogen, which he named cyanogen, has a peculiar degree of stability which enables it to retain its identity and enter into chemical relations after the manner of a simple body.
Ferrocyanide of Potassium K Cfy+3HO, or K C N Fe+3HO, is generally known by the name of yellow prussiate of potassa. It contains ferrocyanogen, a compound radical, consisting of 1 eq. of metallic iron and 3 eq. of the elements of cyanogen, and is designated by the symbol Cfy. Cyanide of potassium is generated in large quantities.
Morowitch was in a weak enough condition to die as a result of the congestion produced by the gas after the traces of the cyanogen had been perhaps thrown off?" "That is precisely the impression which I wished to convey." "Might I ask whether in his semiconscious state he said anything that might at all serve as a clue?" "He talked ramblingly, incoherently.
May we not suppose that masses of it were produced during the incandescence of the earth, and that, when the waters descended, they passed through a series of changes which culminated in living plasm? Such is the "cyanogen hypothesis" of the origin of life, advocated by able physiologists such as Pfluger, Verworn, and others.
The bicyanide of mercury itself is formed when peroxide of mercury is digested with Prussian blue, the peroxide of mercury abstracting the whole of the cyanogen from the blue, and leaving the oxides of iron at the bottom of the vessel.
I am of opinion that in cases such as this, where it is not intended to adopt the chlorination or cyanogen process, it will be found most economical to crush to a coarse gauge, concentrate, calcine the concentrates, and finally amalgamate in some suitable amalgamator.
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