Barium sulfide

Cubic

Ba, S

Colorless cubic crystals

Fixed

4.25 g · cm -3

> 2200 ° C.

Decomposition

Hydrolysis in water

Attention

0.5 mg · m-3

-460.0 KJ / mol

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Barium is the sulfide of barium.

Production and representation

Barium sulfide is produced from barium sulphate ( barytes ); to BaSO4 is reduced with carbon at 1000 ° C in a rotary kiln to BaS:

High purity barium can be used in small amounts to win very easily by heating barium carbonate at about 1000 ° C in a sufficiently strong current of hydrogen sulphide and hydrogen.

Properties

Physical Properties

Barium sulfide is a colorless to gray solid which is easily oxidized in air and decomposes at moisture. It crystallizes in the cubic sodium chloride structure with a lattice parameter of a = 6.39 Å and four formula units per unit cell. Impure barium sulfide phosphorescent after exposure to light.

Chemical Properties

Barium sets for the acid environment of hydrogen sulfide -free:

Use

Barium sulfide is used for the production of barium. It is reacted with acids to form the corresponding salts. example: