Bismuth(III) sulfide

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Bismuth(III) sulfide
IUPAC name Bismuth(III) sulfide
Other names Bismuth sulfide
Dibismuth trisulfide
Identifiers
CAS number [1345-07-9]
Properties
Molecular formula Bi2S3
Molar mass 514.16g mol-1
Appearance brown powder
Density 6.78 g cm-3[1]
Melting point

685 ˚C[2]
Solubility in water Insoluble in water
Hazards
Main hazards Irritant
R-phrases R36/37/38
S-phrases S26, S37
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

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

[edit] 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^+}

[edit] Properties

Bismuth(III) sulfide has a trigonal prismatic crystal structure.

[edit] References

  1. ^ WebElements Periodic Table of the Elements
  2. ^ http://www.espi-metals.com/msds's/Bismuth%20Sulfide.htm