Indium monochloride, InCl

Indium monochloride, InCl, prepared by heating the dichloride with excess of indium and distilling the product in carbon dioxide, is a dark red solid which melts to a blood-red liquid. Its vapour density at 1100° to 1400° is about 5.3 (air = 1), corresponding to the simple formula. Water decomposes it into the trichloride and metallic indium.