Ogled vira Magnezijev oksid

{{Preusmeritev|Magnezija|antično grško mesto v Joniji|Magnezija na Meandru}}
{{chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 414322178
| ImageFile = Magnesium oxide.jpg
| ImageFile2 = NaCl polyhedra.png
| IUPACName = magnezijev oksid
| OtherNames = magnezija<br/>[[periklaz]]
|Section1={{Chembox Identifiers
| CASNo = 1309-48-4
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 3A3U0GI71G
| EINECS = 215-171-9
| PubChem = 14792
| ChEMBL_Ref = {{ebicite|changed|EBI}}
| ChEMBL = 1200572
| InChI =
| RTECS = OM3850000
 }}| Section2 = {{Chembox Properties
| Formula = MgO
| MolarMass = 40,3044 g/mol
| Appearance = bel prašek
| Odor = brez vonja
| Density = 3,58 g/cm³
| MeltingPtC = 2852
| BoilingPtC = 3600
| Solubility = 0.0086 g/100 mL (30 °C)
| SolubleOther = topen v [[kislina|kislini]] in [[amonijak]]u <br> netopen v [[alkohol]]u
| ThermalConductivity=45–60&nbsp;W·m<sup>−1</sup>·K<sup>−1</sup><ref>[http://www.konoshima.co.jp/en/resdev/004.html Application of magnesium compounds to insulating heat-conductive fillers]. konoshima.co.jp</ref>
| RefractIndex = 1,736
| pKa = 10,3
| BandGap= 7,8 eV<ref>{{cite journal |journal=Solid State Communications |volume=55 |year=1985 |pages=351–5 |title=Self-consistent electronic structures of MgO and SrO |first1=O.E. |last1=Taurian |doi=10.1016/0038-1098(85)90622-2 |last2=Springborg |first2=M. |last3=Christensen |first3=N.E. |issue=4 |url=http://users-phys.au.dk/nec/Papers/necSSC/SSC55351.pdf |bibcode=1985SSCom..55..351T |access-date=2014-03-31 |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303213012/http://users-phys.au.dk/nec/Papers/necSSC/SSC55351.pdf |url-status=dead }}</ref>
}}
| Section3 = {{Chembox Structure
| CrystalStruct = [[halit]] (kubična), cF8
| SpaceGroup = Fm<u style="text-decoration:overline">3</u>m, No. 225
| Coordination = oktaedrična (Mg<sup>2+</sup>); oktaedrična (O<sup>2–</sup>)
| LattConst_a =
}}
| Section4 = {{Chembox Thermochemistry
|   DeltaHf = −602&nbsp;kJ·mol<sup>−1</sup><ref name=b1>{{navedi knjigo |last=Zumdahl |first=Steven S. |title=Chemical Principles |url=https://archive.org/details/chemicalprincipl0000zumd_u9g0 |edition=6 |publisher=Houghton Mifflin Company |year=2009 |isbn=0-618-94690-X |page=A22}}</ref>
|   Entropy = 27&nbsp;J·mol<sup>−1</sup>·K<sup>−1</sup><ref name=b1/>
 }}
|Section7={{Chembox Hazards
| ExternalSDS = [http://www.inchem.org/documents/icsc/icsc/eics0504.htm ICSC 0504]
| EUClass =
| RPhrases = {{R36}}, {{R37}}, {{R38}}
| SPhrases =
| MainHazards = [[Metal fume fever]], Irritant
| NFPA-H = 1
| NFPA-F = 0
| NFPA-R = 0
| NFPA-S =
| FlashPt = Non-flammable
| LD50 =
| PEL = TWA 15 mg/m<sup>3</sup> (fume)<ref name=PGCH/>
| REL = None designated<ref name=PGCH/>
| IDLH = 750 mg/m<sup>3</sup> (fume)<ref name=PGCH>{{PGCH|0374}}</ref>
 }}
| Section6 = {{Chembox Related
| OtherAnions = [[magnezijev sulfid]]
| OtherCations = [[berilijev oksid]]<br/>[[kalcijev oksid]]<br/>[[stroncijev oksid]]<br/>[[barijev oksid]]
| OtherFunctn =
| Function =
| OtherCpds = [[magnezijev hidroksid]]<br/>[[magnezijev nitrid]]
}}
}}

'''Magnezijev oksid''', pogovorno '''magnezija''' ([[kemijska formula]] '''MgO'''), je bel prah ali brezbarven [[kristal]], nastane pri gorenju [[magnezij]]a v [[zrak|zraku]] ali v [[kisik]]u. Je tipičen [[bazotvornost oksidov|bazotvoren oksid]]. Uporablja se ga da kot sredstvo za nevtralizacijo želodčne kisline ([[antacid]]) in v nekaterih industrijskih procesih predvsem kot žarovzdržen [[material]] za [[orodje]], saj je temperaturno zelo odporen ([[tališče]] ima pri 2800 stopinjah celzija).

== Sklici in opombe ==
{{sklici|1}}

== Glej tudi ==
* [[vrečka za magnezijo]]

{{chem-stub}}
[[Kategorija:Magnezijeve anorganske spojine]]
[[Kategorija:Oksidi]]
{{normativna kontrola}}