Bismuth sulfide

Bismuth(III) sulfide

Names
IUPAC name Bismuth(III) sulfide
Other names Bismuth sulfide Dibismuth trisulfide
Identifiers
CAS Number	1345-07-9 Y
3D model (Jmol)	Interactive image
ChemSpider	141425 Y
ECHA InfoCard	100.014.287
InChI InChI=1S/2Bi.3S/q2*+3;3*-2 Y Key: YNRGZHRFBQOYPP-UHFFFAOYSA-N Y InChI=1/2Bi.3S/q2*+3;3*-2 Key: YNRGZHRFBQOYPP-UHFFFAOYAA
SMILES [BiH3+3].[BiH3+3].[S-2].[S-2].[S-2]
Properties
Chemical formula	Bi2S3
Molar mass	514.16 g/mol
Appearance	brown powder
Density	6.78 g/cm3
Melting point	850 ˚C
Solubility in water	insoluble
Solubility	soluble in acids
Magnetic susceptibility (χ)	-123.0·10−6 cm3/mol
Hazards
Main hazards	Irritant
R-phrases	R36/37/38
S-phrases	S26, S37
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Bismuth(III) sulfide is a chemical compound of bismuth and sulfur. It occurs in nature as the mineral bismuthinite.

Bismuth(III) sulfide can be prepared by reacting a bismuth(III) salt with hydrogen sulfide:

Bismuth (III) sulfide can also be prepared by the reaction of elemental bismuth and elemental sulfur in an evacuated silica tube at 500 °C for 96 hours.

Bismuth(III) sulfide is isostructural with Sb₂S₃, stibnite. Bismuth atoms are in two different environments, both of which have 7 coordinate Bismuth atoms, 4 in a near planar rectangle and three more distant making an irregular 7-coordination group.

It can react with acids to produce the odoriferous hydrogen sulfide gas.

Bismuth(III) sulfide may be produced in the body by the reaction of the common gastrointestinal drug bismuth subsalicylate with naturally occurring sulfides; this causes temporary black tongue when the sulfides are in the mouth and black feces when the sulfides are in the colon.

It is used as a starting material to produce many other bismuth compounds.