Thallium(I) sulfide

Dark gray to black solid

Fixed

8.39 g · cm -3

448.4 ° C ( under nitrogen)

Risk

Template: Infobox chemical / molecular formula search available

Thallium (I ) sulfide is an inorganic chemical compound of thallium from the group of sulfides.

Production and representation

Thallium (I ) sulfide can be obtained by reaction of sulfur with thallium

Be won or by the reaction of thallium ethylate with hydrogen sulfide.

Properties

Thallium (I ) sulfide is a deep black as a fine powder solid which is practically insoluble in water. He smears similar to graphite when rubbed. Above 300 ° C and volatilization of the compound begins. It has a hexagonal crystal structure similar to that of lead (II ) iodide - type (a = 122.0, c = 181.7 pm ).