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| Names | |
|---|---|
| IUPAC name Bismuth(III) sulfide | |
| Other names Bismuth sulfide Dibismuth trisulfide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
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| ECHA InfoCard | 100.014.287 |
| EC Number |
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| UNII | |
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| Properties | |
| Bi2S3 | |
| Molar mass | 514.14 g·mol−1 |
| Appearance | brown powder |
| Density | 6.78 g/cm3[1] |
| Melting point | 850 ˚C[1] |
| insoluble | |
| Solubility | soluble inacids |
| −123.0·10−6 cm3/mol | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards | Irritant |
| GHS labelling: | |
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| Warning | |
| H315,H319,H335 | |
| P261,P264,P271,P280,P302+P352,P304+P340,P305+P351+P338,P312,P321,P332+P313,P337+P313,P362,P403+P233,P405,P501 | |
| Related compounds | |
Otheranions | Bismuth(III) oxide Bismuth selenide Bismuth telluride |
Othercations | Arsenic trisulfide Antimony trisulfide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Bismuth(III) sulfide (Bi2S3) is achemical compound ofbismuth andsulfur. It occurs in nature as the mineralbismuthinite.
Bismuth(III) sulfide can be prepared by reacting a bismuth(III)salt withhydrogen 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 isisostructural withstibnite (stibnite is one of the forms ofantimony(III) sulfide). 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.[2]
It can react with acids to produce the odoriferoushydrogen sulfide gas.
Bismuth(III) sulfide may be produced in the body by the reaction of the common gastrointestinal drugbismuth subsalicylate with naturally occurring sulfides; this causes temporaryblack 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.[3]
