Selenium tetrabromide
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| Selenium tetrabromide | |
|---|---|
| IUPAC name | tetra-μ3-bromido-tetrakis(tribromidoselenium) |
| Identifiers | |
| Standard InChI | InChI=1S/Br16Se4/c1-17(2,3)13- 18(4,5,6)14(17)20(10,11,12)15( 17)19(13,7,8,9)16(18)20 |
| Standard InChIKey | SPEQDFMFVYVPLS-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| Properties[1] | |
| Chemical formula | Se4Br16 |
| Molar mass | 1594.3 g mol−1 |
| Appearance | red-brown crystals |
| Melting point |
75 °C decomp. |
| Solubility in water | hydrolyzes |
| Structure (α-phase)[2] | |
| Space group | P31c |
| Lattice constant | a = 1020.0(7) pm, c = 3035.1(18) pm |
| Structure (β-phase)[2] | |
| Space group | P2/c |
| Lattice constant | a = 1702 pm, b = 1039 pm, c = 1549 pm, α = 90°, β = 117°, γ = 90° |
| Hazards[3][4] | |
| EU index number | 034-002-00-8 |
| GHS pictograms |   
|
| GHS signal word | DANGER |
| GHS hazard statements | H301, H331, H373, H400, H410 |
| GHS precautionary statements | P260, P261, P264, P270, P271, P273, P301+312, P304+340, P311, P314, P321, P330, P391, P403+233 |
| PEL (U.S.) | 0.2 mg m−3 TWA (as Se) |
| Related compounds | |
| Other anions | Selenium tetrafluoride Selenium tetrachloride |
| Other cations | Tellurium tetrabromide Polonium tetrabromide |
| Other compounds | Selenium monobromide Diselenium dibromide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Selenium tetrabromide, SeBr4, is the highest of the bromides of selenium. It is used as a photoreceptor dopant in electrophotography[5] and as an additive in silver electroplating baths.[1]
Notes and references
Notes
References
- ↑ 1.0 1.1 Ukeles, S. D.; Freiberg, M. Bromine, Inorganic Compounds. In Kirk-Othmer Encyclopedia of Chemical Technology; John Wiley: New York, 2002. DOI: 10.1002/0471238961.021815131001031.
- ↑ 2.0 2.1 Born, P.; Kniep, R.; Mootz, D. Phasenbeziehungen im System Se–Br und die Kristallstrukturen des dimorphen SeBr4. Z. Anorg. Allg. Chem. 1979, 451 (1), 12–24. DOI: 10.1002/zaac.19794510103.
- ↑ Index no. 034-002-00-8 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 428.
- ↑ "Selenium compounds (as Se)" in 29 C.F.R. § 1910.1000 Table Z-1, 54 FR 36767, September 5, 1989, as amended. Selenium. In Pocket Guide to Chemical Hazards; U.S. Department of Health and Human Services (NIOSH) Publication No. 2005-149; Government Printing Office: Washington, DC, 2005. ISBN 9780160727511, <http://www.cdc.gov/niosh/npg/npgd0550.html>.
- ↑ Teshima, T.; Nozaki, N.; Koyama, M., et al. (Stanley Electric Co.) Flexible multi-layer photoreceptor of electrophotography. US Patent 4226929, published 7 October 1980.
External links
- WebElements
- IPCS Environmental Health Criteria 58: Selenium
- IPCS Poisons Information Monograph 483: Selenium
- Selenium, NIOSH Pocket Guide to Chemical Hazards
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