Skoblikoff, Jahresb., 1852, p. 428; W.
Sidot (Jahresb., 1869, p. 2 43), E.
Olszewski, Jahresb., 1883, p. 75).
Vogel, Jahresb., 18 53, p. 643), CS 2 -1-KHO+-R OH =H20+RO CS SK.
Berzelius (Jahresb., 182 5, 4, p. 91) by the action of chlorine on silicon, and is also obtained when an intimate mixture of silica and carbon is heated in a stream of chlorine and the products of reaction fractionated.
Chappuis, Jahresb., 1886, p. 202).
Cloez, Jahresb., 18 53, p. 468); or by the action of tin and hydrochloric acid on cyanogen (T.
I: Jahresb., 1849, 2231 by estimating the amount of carbon dioxide formed on burning graphite or diamond in a current of oxygen, the value obtained being 12.0 (o = 16).
Clarke, Jahresb., 1881, p. 7).
Andre, Jahresb., 1886, p. 627).
Butlerow, Jahresb., 1864, p. 496; Ann.
Berthelot, Jahresb., 1851), or when petroleum is led through a red-hot tube packed with charcoal (A.
Baudrimant, Jahresb., 1880, p. 393); by the action of 50% sulphuric acid on cyanamide: CN NH2+H20= CO(NH 2) 2; by the action of mercuric oxide on oxamide (A.