Difference between revisions of "Beryllium oxide"
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| + | {{chembox | ||
| + | | Name = Beryllium oxide | ||
| + | | OtherNames = Beryllia, [[Bromellite]] | ||
| + | | Section1 = {{Chembox Identifiers | ||
| + | | CASNo = 1304-56-9 | ||
| + | | CASNo_Ref = {{cascite}} | ||
| + | | EINECS = 215-133-1 | ||
| + | | RTECS = DS4025000 | ||
| + | }} | ||
| + | | Section2 = {{Chembox Properties | ||
| + | | Reference = <ref>{{RubberBible62nd|page=82}}.</ref> | ||
| + | | Formula = BeO | ||
| + | | MolarMass = 25.012 g mol<sup>−1</sup> | ||
| + | | Appearance = white solid | ||
| + | | Density = 3.01 g cm<sup>−3</sup> | ||
| + | | Solubility = 200 µg dm<sup>−3</sup> | ||
| + | | MeltingPt = 2530(30) °C | ||
| + | | BoilingPt = ''approx.'' 3900 °C | ||
| + | | ThermalConductivity = 4 W cm<sup>−1</sup> K<sup>−1</sup> <!-- unreferenced --> | ||
| + | | BandGap = 10.6 eV <!-- unreferenced --> | ||
| + | | RefractIndex = 1.719, 1.733 | ||
| + | }} | ||
| + | | Section3 = {{Chembox Structure | ||
| + | | Reference = | ||
| + | | CrystalStruct = hexagonal, [[Pearson symbol|hP4]] | ||
| + | | SpaceGroup = P6<sub>3</sub>/''mc'' (No. 186) | ||
| + | }} | ||
| + | | Section4 = {{Chembox Thermochemistry | ||
| + | | Reference = <ref>{{CODATA thermo}}.</ref> | ||
| + | | DeltaHf = –609.4(25) kJ mol<sup>−1</sup> | ||
| + | | Entropy = 13.77(4) J K<sup>–1</sup> mol<sup>–1</sup> | ||
| + | }} | ||
| + | | Section7 = {{Chembox Hazards | ||
| + | | Reference = <ref>{{CLP Regulation|index=004-003-00-8|page=341}}</ref> | ||
| + | | EUIndex = 004-003-00-8 | ||
| + | | MSDS = {{ICSC-small|1325}} | ||
| + | | GHSPictograms = {{GHS06|Acte Tox. 2, Acute Tox. 3}}{{GHS08|Carc. 1B, STOT RE 1, STOT SE 3, Skin Sens. 1, Eye Irrit. 2, Skin Irrit. 2}} | ||
| + | | GHSSignalWord = DANGER | ||
| + | | HPhrases = {{H-phrases|350|330|301|372|319|335|315|317}} | ||
| + | | FlashPt = Non-flammable | ||
| + | | LD50 = 2062 mg/kg (mouse, oral) | ||
| + | }} | ||
| + | | Section8 = {{Chembox Related | ||
| + | | OtherAnions = [[Beryllium sulfide]]<br/>[[Beryllium selenide]]<br/>[[Beryllium telluride]] | ||
| + | | OtherCations = [[Magnesium oxide]]<br/>[[Calcium oxide]]<br/>[[Strontium oxide]]<br/>[[Barium oxide]] | ||
| + | }} | ||
| + | }} | ||
'''Beryllium oxide''', BeO, is a [[basic oxide]]. As with all [[beryllium]] compounds, it is highly [[carcinogen]]ic.<ref name="IARC">{{IARC beryllium}}.</ref> | '''Beryllium oxide''', BeO, is a [[basic oxide]]. As with all [[beryllium]] compounds, it is highly [[carcinogen]]ic.<ref name="IARC">{{IARC beryllium}}.</ref> | ||
| Line 8: | Line 55: | ||
*{{CICAD|32|name=Beryllium and Beryllium Compounds}} | *{{CICAD|32|name=Beryllium and Beryllium Compounds}} | ||
*{{HSG|044|name=Beryllium}} | *{{HSG|044|name=Beryllium}} | ||
| + | *[http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc13/icsc1325.htm International Chemical Safety Card 1325] | ||
| + | * [http://www.npi.gov.au/database/substance-info/profiles/13.html National Pollutant Inventory - Beryllium and compounds] | ||
| + | *[http://www.cdc.gov/niosh/npg/npgd0054.html NIOSH Pocket guide to Chemical Hazards] | ||
[[Category:Beryllium compounds]] | [[Category:Beryllium compounds]] | ||
[[Category:Oxides]] | [[Category:Oxides]] | ||
| − | |||
| − | |||
{{CC-BY-3.0}} | {{CC-BY-3.0}} | ||
Revision as of 15:05, 20 June 2010
| Beryllium oxide | |
|---|---|
| Other names | Beryllia, Bromellite |
| Identifiers | |
| CAS number | [] |
| EC number | |
| RTECS | DS4025000 |
| Properties[1] | |
| Chemical formula | BeO |
| Molar mass | 25.012 g mol−1 |
| Appearance | white solid |
| Density | 3.01 g cm−3 |
| Melting point |
2530(30) °C |
| Boiling point |
approx. 3900 °C |
| Solubility in water | 200 µg dm−3 |
| Band gap | 10.6 eV |
| Thermal conductivity | 4 W cm−1 K−1 |
| Refractive index (nD) | 1.719, 1.733 |
| Structure | |
| Crystal structure | hexagonal, hP4 |
| Space group | P63/mc (No. 186) |
| Thermochemistry[2] | |
| Std enthalpy of formation ΔfH |
–609.4(25) kJ mol−1 |
| Standard molar entropy S |
13.77(4) J K–1 mol–1 |
| Hazards[3] | |
| Material safety data sheet (MSDS) | ICSC |
| EU index number | 004-003-00-8 |
| GHS pictograms |  
|
| GHS signal word | DANGER |
| GHS hazard statements | H350, H330, H301, H372, H319, H335, H315, H317 |
| Flash point | Non-flammable |
| LD50 | 2062 mg/kg (mouse, oral) |
| Related compounds | |
| Other anions | Beryllium sulfide Beryllium selenide Beryllium telluride |
| Other cations | Magnesium oxide Calcium oxide Strontium oxide Barium oxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Beryllium oxide, BeO, is a basic oxide. As with all beryllium compounds, it is highly carcinogenic.[4]
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p 82. ISBN 0-8493-0462-8.
- ↑ Cox, J. D.; Wagman, D. D.; Medvedev, V. A. CODATA Key Values for Thermodynamics; Hemisphere: New York, 1989. ISBN 0891167587, <http://www.codata.org/resources/databases/key1.html>.
- ↑ Index no. 004-003-00-8 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 341.
- ↑ Beryllium and Beryllium Compounds. In Beryllium, Cadmium, Mercury, and Exposures in the Glass Manufacturing Industry; IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 58; International Agency for Research on Cancer: Lyon, France, 1993; pp 41–117. ISBN 92-832-1258-4, <http://monographs.iarc.fr/ENG/Monographs/vol58/mono58-6.pdf>.
External links
- IPCS Environmental Health Criteria 106: Beryllium
- IPCS Concise International Chemical Assessment Document 32: Beryllium and Beryllium Compounds
- IPCS Health and Safety Guide 044: Beryllium
- International Chemical Safety Card 1325
- National Pollutant Inventory - Beryllium and compounds
- NIOSH Pocket guide to Chemical Hazards
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