Bismuth(III) sulfide

Bismuth(III) sulfide
Bismuth(III) sulfide
Identifiers
CAS number 1345-07-9 YesY
ChemSpider 141425 YesY
Jmol-3D images Image 1
Properties
Molecular formula Bi2S3
Molar mass 514.16 g/mol
Appearance brown powder
Density 6.78 g/cm3[1]
Melting point

775 ˚C[2]

Solubility in water insoluble
Solubility soluble in acids
Hazards
R-phrases R36/37/38
S-phrases S26, S37
Main hazards Irritant
 YesY sulfide (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

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

Contents

Synthesis

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

\mathrm{2 \ Bi^{3+} + 3 \ H_2S \longrightarrow \ Bi_2S_3 + 6 \ H^+}

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.

\mathrm{2 \ Bi + 3 \ S \longrightarrow \ Bi_2S_3 }

Properties

Bismuth(III) sulfide has a trigonal prismatic crystal structure. It can react with acids to produce the odoriferous hydrogen sulfide gas.

Uses

It is used as a starting material to produce many other bismuth compounds. [3]

References

  1. ^ WebElements Periodic Table of the Elements
  2. ^ D. Cubicciotti, "The Bismuth-Sulfur Phase Diagram," J. Phys. Chem., 66, 1205, (1962).
  3. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0070494398

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