Chemistry:Praseodymium(III) sulfide

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Praseodymium(III) sulfide
Identifiers
3D model (JSmol)
EC Number
  • 234-874-1
Properties
Pr2S3
Molar mass 378.00 g/mol
Appearance brown powder
Odor rotten egg
Density 5.042 g/cm3, solid (11°C)
+10,770·10−6 cm3/mol
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondFlammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
2
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Praseodymium(III) sulfide is an inorganic chemical compound with chemical formula Pr2S3.

Preparation

Praseodymium(III) sulfide can be obtained by reacting praseodymium(III) oxide and hydrogen sulfide at 1320 °C:[1]

Pr2O3 + 3H2S → Pr2S3 + 3H2O

It could also be obtained by directly reacting sulfur with metallic praseodymium:[2]

2Pr + 3S → Pr2S3

References

  1. ↑ Georg Brauer (1975) (in de). Handbuch der präparativen anorganischen Chemie. Enke. ISBN 978-3-432-02328-1. https://books.google.com/books?id=atbvAAAAMAAJ. 
  2. ↑ A. W. Sleight and D. P. Kelly (1973) (in German), Rare-earth sesquisulfides, Ln2S3, Inorganic Syntheses, 14, McGraw-Hill Book Company, Inc., pp. 152–155 



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