| Names | |
|---|---|
| Other names Didysprosium trisulfide | |
| Identifiers | |
| CAS Number | |
| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.031.995 
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| EC Number |
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| PubChem CID | |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Dy2S3 |
| Molar mass | 421.18 g·mol |
| Appearance | brown crystals |
| Density | 6.08 g/cm |
| Solubility in water | moderately soluble |
| Related compounds | |
| Related compounds | Lanthanum(III) sulfide |
| Hazards | |
| GHS labelling: | |
| Pictograms |  
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| Signal word | Danger |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
Dysprosium(III) sulfide is a binary inorganic compound of dysprosium and sulfur with the chemical formula Dy2S3.
Synthesis
Heating of pure substances in an inert atmosphere or vacuum:
- 2Dy + 3S → Dy2S3
The effect of hydrogen sulfide on dysprosium(III) oxide:
- Dy2O3 + 3H2S → Dy2S3 + 3H2O
Physical properties
Didysprosium trisulfide forms yellow-orange-brown crystals of two modifications: cubic and monoclinic systems.
There is evidence that Dy2S3 forms crystals of brown-red, black, or green color.
The crystals are stable in dry air, but in humid air they are slowly hydrolyzed. The compound is moderately soluble in water and acids.
Chemical properties
Dy2S3 oxidizes when strongly heated in air:
- Dy2S3 + 3O2 → Dy2O2S + 2SO2
References
- Bouroushian, Mirtat (23 April 2010). Electrochemistry of Metal Chalcogenides. Springer Science & Business Media. p. 32. ISBN 978-3-642-03967-6. Retrieved 1 August 2024.
- Toxic Substances Control Act (TSCA) Chemical Substance Inventory. Cumulative Supplement to the Initial Inventory: User Guide and Indices. U.S. Environmental Protection Agency, Office of Toxic Substances. 1980. p. 128. Retrieved 1 August 2024.
- "Dysprosium Sulfide". American Elements. Retrieved 1 August 2024.
- "WebElements Periodic Table » Dysprosium » didysprosium trisulphide". webelements.com. Retrieved 1 August 2024.
- Haynes, William M. (4 June 2014). CRC Handbook of Chemistry and Physics. CRC Press. p. 4-63. ISBN 978-1-4822-0868-9. Retrieved 1 August 2024.
- "Buy DYSPROSIUM SULFIDE | 12133-06-1 | BenchChem". benchchem.com. Retrieved 1 August 2024.
| Dysprosium compounds | |
|---|---|
| Dy(II) | |
| Dy(III) | |
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