It is very volatile, the vapour being heavy and very inflammable.
The freezing points and vapour pressures of solutions of sugar are also in conformity with the theoretical numbers.
Either they are placed in a leaden cupboard into which the vapour is introduced, or they are dipped for a few seconds in a mixture of one part of chloride of sulphur and forty parts of carbon disulphide or purified light petroleum.
The platinum is maintained at a bright red heat, either by a gas flame or by an electric furnace, and the vapour is passed over it by leading in a current of oxygen.
It possesses an extremely pungent smell, and its vapour is extremely irritating to the eyes.