Difference between revisions of "Boron trifluoride"
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| Section2 = {{Chembox Properties | | Section2 = {{Chembox Properties | ||
| − | | Reference = <ref name="RubberBible">{{RubberBible62nd|page=B-84}}.</ref> | + | | Reference = <ref name="RubberBible">{{RubberBible62nd|page=B-84}}.</ref><ref name="AirLiquide">{{AirLiquide | name = Boron trifluoride | id = 68 | accessdate = 2010-06-21}}.</ref> |
| Formula = BF<sub>3</sub> | | Formula = BF<sub>3</sub> | ||
| MolarMass = 67.806 g mol<sup>−1</sup> | | MolarMass = 67.806 g mol<sup>−1</sup> | ||
| − | | Appearance = | + | | Appearance = colourless gas |
| − | | Density = | + | | Density = 2.84 kg m<sup>−3</sup> |
| Solubility = reacts violently | | Solubility = reacts violently | ||
| − | | MeltingPt = −126. | + | | MeltingPt = −126.7 °C (146.4 K) |
| − | | BoilingPt = −100.3 °C | + | | BoilingPt = −100.3 °C (172.8 K) |
| − | | CriticalPt = −12.3 °C | + | | CriticalPt = −12.3 °C, 49.85 bar |
| + | }} | ||
| + | | Section3 = {{Chembox Structure | ||
| + | | MolShape = [[Trigonal planar molecular geometry|Trigonal planar]] (''D''<sub>3h</sub>) | ||
| + | | Dipole = zero | ||
| + | }} | ||
| + | | Section4 = {{Chembox Thermochemistry | ||
| + | | Reference = <ref name="AirLiquide"/><ref name="NIST">{{NIST chemistry|id=1S/BF3/c2-1(3)4|name=Borane, trifluoro-|accessdate=2010-06-21}}.</ref> | ||
| + | | DeltaHf = –1136.0(8) kJ mol<sup>−1</sup> | ||
| + | | Entropy = 254.42(20) J K<sup>–1</sup> mol<sup>–1</sup> | ||
| + | | HeatCapacity = 50 J K<sup>–1</sup> mol<sup>–1</sup> | ||
| + | | HeatVapor = 278.39 kJ kg<sup>−1</sup> at b.p. | ||
}} | }} | ||
| Section7 = {{Chembox Hazards | | Section7 = {{Chembox Hazards | ||
| − | | Reference = <ref>{{CLP Regulation|index= | + | | Reference = <ref>{{CLP Regulation|index=005-001-00-X|page=341}}</ref><ref>{{PGCH-ref|id=0062|name=Boron trifluoride}}.</ref> |
| EUIndex = 005-001-00-X | | EUIndex = 005-001-00-X | ||
| MSDS = {{ICSC-small|0231}} | | MSDS = {{ICSC-small|0231}} | ||
| GHSPictograms = {{GHS04|Press. Gas}}{{GHS06|Acute Tox. 2}}{{GHS05|Skin Corr. 1A}} | | GHSPictograms = {{GHS04|Press. Gas}}{{GHS06|Acute Tox. 2}}{{GHS05|Skin Corr. 1A}} | ||
| GHSSignalWord = DANGER | | GHSSignalWord = DANGER | ||
| − | | HPhrases = {{H-phrases|330|314}} | + | | HPhrases = {{H-phrases|330|314}} <ref group="note">Within the European Union, the following additional hazard statement (EUH014) must also be displayed on labelling: Reacts violently with water.</ref> |
| FlashPt = non-flammable | | FlashPt = non-flammable | ||
| PEL = 1 ppm ceiling ({{nowrap|3 mg m<sup>−3</sup>}}) | | PEL = 1 ppm ceiling ({{nowrap|3 mg m<sup>−3</sup>}}) | ||
}} | }} | ||
| Section8 = {{Chembox Related | | Section8 = {{Chembox Related | ||
| − | | | + | | OtherAnions = [[Boron trichloride]]<br/>[[Boron tribromide]]<br/>[[Boron triiodide]] |
| + | | OtherCations = [[Aluminium fluoride]]<br/>[[Gallium fluoride]]<br/>[[Indium fluoride]]<br/>[[Thallium fluoride]] | ||
}} | }} | ||
}} | }} | ||
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}} | }} | ||
{{FixBunching|end}} | {{FixBunching|end}} | ||
| − | '''Boron trifluoride''', BF<sub>3</sub>, is a colourless, toxic gas. It is used as a | + | '''Boron trifluoride''', BF<sub>3</sub>, is a colourless, toxic gas. It is widely used in the manufacture of [[semiconductor]] devices, to introduce trace quantities of [[boron]] into the [[silicon]] as [[P-type semiconductor|p-type dopant]].<ref name="AirLiquide"/> It is also used as a [[Lewis acid]] in [[organic synthesis]], either as the gas or (more usually) as an adduct with a weak [[Lewis base]] such as [[diethyl ether]] or [[dimethyl sulfide]]. |
| + | |||
| + | ==Notes and references== | ||
| + | ===Notes=== | ||
| + | {{reflist|group=note}} | ||
| − | ==References== | + | ===References=== |
{{reflist}} | {{reflist}} | ||
| Line 74: | Line 90: | ||
[[Category:Fluorides]] | [[Category:Fluorides]] | ||
[[Category:Nonmetal halides]] | [[Category:Nonmetal halides]] | ||
| + | [[Category:Reagents for organic chemistry]] | ||
{{CC-BY-3.0}} | {{CC-BY-3.0}} | ||
Latest revision as of 05:44, 22 June 2010
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Boron trifluoride, BF3, is a colourless, toxic gas. It is widely used in the manufacture of semiconductor devices, to introduce trace quantities of boron into the silicon as p-type dopant.[2] It is also used as a Lewis acid in organic synthesis, either as the gas or (more usually) as an adduct with a weak Lewis base such as diethyl ether or dimethyl sulfide.
Notes and references
Notes
- ↑ Within the European Union, the following additional hazard statement (EUH014) must also be displayed on labelling: Reacts violently with water.
References
- ↑ 1.0 1.1 CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-84. ISBN 0-8493-0462-8.
- ↑ 2.0 2.1 2.2 Boron trifluoride. In Gas Encyclopedia; Air Liquide, <http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=68>. (accessed 21 June 2010).
- ↑ Borane, trifluoro-. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/BF3/c2-1(3)4>. (accessed 21 June 2010).
- ↑ Index no. 005-001-00-X 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 341.
- ↑ Boron trifluoride. 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/npgd0062.html>.
External links
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See also the corresponding article on Wikipedia. |
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