Revision as of 18:00, 9 January 2012 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{chembox}} taken from revid 455227473 of page Strontium_carbonate for the Chem/Drugbox validation project (updated: ''). |
Latest revision as of 11:46, 7 October 2024 edit Itz.mas10 (talk | contribs)Extended confirmed users704 edits →Uses: appropriate reference to ferrite magnet included |
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{{ambox | text = This page contains a copy of the infobox ({{tl|chembox}}) taken from revid of page ] with values updated to verified values.}} |
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{{chembox |
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{{chembox |
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|Watchedfields = changed |
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| verifiedrevid = 442347136 |
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|verifiedrevid = 470471219 |
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| ImageFile = SrCO3.jpg |
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|ImageFile = SrCO3.jpg |
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| ImageSize = |
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| IUPACName = Strontium carbonate |
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|IUPACName = Strontium carbonate |
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| OtherNames = ] |
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|OtherNames = ] |
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| Section1 = {{Chembox Identifiers |
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|Section1 = {{Chembox Identifiers |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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|ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 14666 |
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|ChemSpiderID = 14666 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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|UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII = 41YPU4MMCA |
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|UNII = 41YPU4MMCA |
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| InChI = 1/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
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|InChI = 1/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
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| InChIKey = LEDMRZGFZIAGGB-NUQVWONBAS |
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|InChIKey = LEDMRZGFZIAGGB-NUQVWONBAS |
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| SMILES = .C()=O |
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|SMILES = .C()=O |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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|StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChI = 1S/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
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|StdInChI = 1S/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 |
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} |
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|StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChIKey = LEDMRZGFZIAGGB-UHFFFAOYSA-L |
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|StdInChIKey = LEDMRZGFZIAGGB-UHFFFAOYSA-L |
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| CASNo = 1633-05-2 |
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|CASNo = 1633-05-2 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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|CASNo_Ref = {{cascite|correct|CAS}} |
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| PubChem = 15407 |
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|PubChem = 15407 |
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| RTECS = WK8305000 |
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|RTECS = WK8305000 |
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|EINECS = 216-643-7 |
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}} |
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| Section2 = {{Chembox Properties |
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| Formula = SrCO<sub>3</sub> |
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| MolarMass = 147.63 g/mol |
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| Appearance = White or grey powder <br> ] |
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| Odor = Odorless |
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| Density = 3.5 g/cm<sup>3</sup> |
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| MeltingPt = 1290 ºC decomp. |
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| Solubility = 0.0011 g/100 ml (18 ºC) |
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| RefractIndex = 1.518 <ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, ISBN 0070494398</ref> |
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}} |
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| Section7 = {{Chembox Hazards |
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| EUIndex = Not listed |
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| NFPA-H = 1 |
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| NFPA-F = 0 |
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| NFPA-R = 0 |
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| NFPA-O = |
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| ExternalMSDS = |
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| MainHazards = |
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| FlashPt = Non-flammable |
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}} |
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| Section8 = {{Chembox Related |
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| OtherAnions = |
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| OtherCations = ]<br/>]<br/>] |
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| OtherCpds = |
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}} |
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}} |
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|Section2 = {{Chembox Properties |
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|Formula = {{chem2|SrCO3}} |
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|Sr=1|C=1|O=3 |
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|Appearance = White powder |
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|Odor = Odorless |
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|Density = 3.5 g/cm<sup>3</sup><ref name="GESTIS">{{GESTIS|Name=Strontiumcarbonat|ZVG=5190|CAS=1633-05-2|Date=2019-12-19}}</ref> |
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|MeltingPtC = 1494 |
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|MeltingPt_notes = (decomposes) |
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|Solubility = 0.0011 g/100 mL (18 °C) <br> 0.065 g/100 mL (100 °C) |
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|SolubleOther = Soluble in ] <br> Slightly soluble in ] |
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|Solvent = other solvents |
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|SolubilityProduct = 5.6{{e|−10}}<ref name="crc">{{cite book |author1=John Rumble |title=CRC Handbook of Chemistry and Physics |date=June 18, 2018 |publisher=CRC Press |isbn=978-1138561632 |pages=5–189|edition=99 |language=English}}</ref> |
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|RefractIndex = 1.518 |
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|MagSus = −47.0·10<sup>−6</sup> cm<sup>3</sup>/mol |
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}} |
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|Section3 = {{Chembox Structure |
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|CrystalStruct = Rhombic |
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}} |
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|Section4 = {{Chembox Hazards |
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|NFPA-H = 1 |
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|NFPA-F = 0 |
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|NFPA-R = 0 |
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|ExternalSDS = |
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|FlashPt = Non-flammable |
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}} |
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|Section5 = {{Chembox Related |
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|OtherCations = ]<br/>]<br/>]<br/>]<br/>] |
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}} |
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}} |
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'''Strontium carbonate''' (SrCO<sub>3</sub>) is the carbonate salt of ] that has the appearance of a white or grey powder. It occurs in nature as the mineral ]. |
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== Chemical properties == |
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Strontium carbonate is a white, odorless, tasteless ]. Being a ], it is a weak ] and therefore is reactive with ]s. It is otherwise stable and safe to work with. It is practically insoluble in ] (0.0001 g per 100 ml). The ] is increased significantly if the water is saturated with ], to 0.1 g per 100 ml. |
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== Preparation == |
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Other than the natural occurrence as a mineral, strontium carbonate is prepared synthetically in one of two processes, both of which start with naturally occurring ], a mineral form of ] (SrSO<sub>4</sub>). In the "black ash" process, celesite is ] with ] at 1100–1300 °C to form ].<ref name=hydrometallurgy>{{cite journal |journal= Hydrometallurgy |volume= 84 |issue= 3–4 |year= 2006 |pages= 239–246 |title= Dissolution kinetics of celestite (SrSO<sub>4</sub>) in HCl solution with BaCl<sub>2</sub> |first1= Salih |last1= Aydoğan |first2= Murat |last2= Erdemoğlu |first3= Ali |last3= Aras |first4= Gökhan |last4= Uçar |first5= Alper |last5= Özkan |doi= 10.1016/j.hydromet.2006.06.001 |bibcode= 2006HydMe..84..239A}}</ref> The sulfate is ], leaving the sulfide: |
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:SrSO<sub>4</sub> + 2 C → SrS + 2 CO<sub>2</sub> |
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A mixture of strontium sulfide with either ] gas or ] then leads to formation of a ] of strontium carbonate.<ref name=Ullmann>{{Ullmann|first1= J. Paul |last1= MacMillan |first2= Jai Won |last2= Park |first3= Rolf |last3= Gerstenberg |first4= Heinz |last4= Wagner |first5= Karl |last5= Köhler |first6= Peter |last6= Wallbrecht |title= Strontium and Strontium Compounds |doi= 10.1002/14356007.a25_321}}</ref><ref name=hydrometallurgy/> |
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:SrS + H<sub>2</sub>O + CO<sub>2</sub> → SrCO<sub>3</sub> + H<sub>2</sub>S |
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:SrS + Na<sub>2</sub>CO<sub>3</sub> → SrCO<sub>3</sub> + Na<sub>2</sub>S |
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In the "direct conversion" or double-decomposition method, a mixture of celesite and sodium carbonate is treated with steam to form strontium carbonate with substantial amounts of undissolved other solids.<ref name=hydrometallurgy/> This material is mixed with ], which dissolves the strontium carbonate to form a solution of ]. Carbon dioxide or sodium carbonate is then used to re-precipitate strontium carbonate, as in the black-ash process. |
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== Uses == |
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].]] |
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The most common use is as an inexpensive ] in ]s. Strontium and its salts emit a brilliant red color in flame. Unlike other strontium salts, the carbonate salt is generally preferred because of its cost and the fact that it is not ]. Its ability to neutralize acid is also very helpful in pyrotechnics. Another similar application is in ]s. |
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Strontium carbonate is used for electronic applications. It is used for manufacturing ] receivers to absorb electrons resulting from the ].<ref>{{cite web |url=http://www.primaryinfo.com/strontium-carbonate.htm |title=Strontium Carbonate |website=primaryinfo.com |accessdate=May 31, 2017}}</ref> |
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It is used in the preparation of ], ], strontium oxide, and strontium salts and in refining sugar and certain drugs. |
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It is widely used in the ceramics industry as an ingredient in glazes. It acts as a ] and also modifies the color of certain metallic oxides. It has some properties similar to ]. |
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It is also used in the manufacturing of strontium ] for ]s which are used in ]s and door magnets.<ref>{{cite web |url=https://www.stanfordmagnets.com/ceramic-ferrite-magnets.html |title=Ceramic Ferrite Magnets |website=Stanford Magnets |access-date=Oct 7, 2024}}</ref> |
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Strontium carbonate is also used for making some ]s such as ] and also for electroluminescent materials where it is first calcined into ] and then mixed with ] to make ]:x where x is typically ].{{Citation needed|date=November 2015}} This is the "blue/green" phosphor which is sensitive to ] and changes from lime green to blue.{{Citation needed|date=November 2015}} Other ]s can also be used such as ], or ] to get a yellow/orange glow instead. |
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Because of its status as a weak ], strontium carbonate can be used to produce many different strontium compounds by simple use of the corresponding acid. |
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==Microbial precipitation== |
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The ] '']'', '']'' and '']'' can precipitate strontian ] in ]. The strontium exists as ] in ] within the host calcite with the strontium content of up to one percent.<ref>{{cite book|title=Geomicrobiology, Fifth Edition| author1=Henry Lutz Ehrlich| author2=Dianne K Newman| publisher=CRC Press| date=2009|page=177}}</ref> |
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==References== |
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<references/> |
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== External links == |
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* |
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{{Strontium compounds}} |
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{{Carbonates}} |
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{{Authority control}} |
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] |
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] |
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] |