Aurous iodide is also obtained as a green solid by acting upon gold with iodine.
I i, i Oavev H (+ lx' 1 3) aurous 6py?7 Tor) Beou cis TPkOS.
Aurous oxide, Au 2 0, is obtained by cautiously adding potash to a solution of aurous bromide, or by boiling mixed solutions of auric chloride and mercurous nitrate.
Aurous chloride, AuCl, is obtained as a lemon-yellow, amorphous powder, insoluble in water, by heating auric chloride to 185°.
Gold dichloride, probably Au 2 C1 4, =Au.AuC1 4, aurous chloraurate, is said to be obtained as a dark-red mass by heating finely divided gold to 140°- 170° in chlorine.