Chemistry:Lanthanum oxysulfide
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| Other names
lanthanum(3+); oxygen(2-); sulfide, lanthanum oxide sulfide, dilanthanum dioxide sulphide[1]
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3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| La2O2S | |
| Molar mass | 341.88 g/mol |
| Appearance | yellowish-white crystals |
| Density | 5.77 g/cm3 |
| Related compounds | |
Related compounds
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Gadolinium oxysulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Tracking categories (test):
Lanthanum oxysulfide is an inorganic compound, a salt of lanthanum and hydrogen sulfide acid, with the formula La2O2S.[2][3]
Synthesis
- La
2(SO
4)
3 + O
2 → La
2O
3 · SO
3 + 2SO
3
- La
- The resulting product is reduced with hydrogen when heated:
- La
2O
3 · SO
3 + 4H
2 → La
2O
2S + 4H
2O
- La
Physical properties
The compound forms yellowish-white hexagonal crystals.
Uses
The compound is used as a laser host material.[5]
References
- ↑ "Lanthanum Oxysulfide | CAS 12031-43-5 | Lorad Chemical Corporation". Lorad Chemical. https://loradchemical.com/products/lanthanum-oxysulfide.
- ↑ "CAS 12031-43-5 Lanthanum oxide sulfide(La2O2S) - Alfa Chemistry". Alfa Chemistry. https://www.alfa-chemistry.com/cas_12031-43-5.htm.
- ↑ "Lanthanum Oxysulfide" (in en). American Elements. https://www.americanelements.com/lanthanum-oxysulfide-12031-43-5.
- ↑ Pitha, John J.; Smith, Arthur L.; Ward, Roland (1947). "The Preparation of Lanthanum Oxysulfide and its Properties as a Base Material for Phosphors Stimulated by Infrared". J. Am. Chem. Soc. 69 (8): 1870–1871. doi:10.1021/ja01200a009. https://pubs.acs.org/doi/10.1021/ja01200a009. Retrieved 21 March 2023.
- ↑ Koechner, Walter (11 November 2013) (in en). Solid-State Laser Engineering. Springer Science+Business Media. p. 32. ISBN 978-3-662-14105-2. https://books.google.com/books?id=t0DzCAAAQBAJ&dq=Lanthanum+oxysulfide&pg=PA32. Retrieved 21 March 2023.
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