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| | | [http://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=5444c028-3fcd-4b37-82e4-3cce0f53488a] |
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| | align="center" colspan="2" | [[Image:Strontium chloride hexahydrate.jpg|200px|Strontium chloride hexahydrate.jpg]] <br/> '' Strontium chloride hexahydrate ''
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| | align="center" colspan="2" | '''[[systematic name|IUPAC]] name''' <br/> Strontium chloride
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| |- style="border-top: 3px solid gray"
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| ! bgcolor="#ffddaa" colspan="2" | General
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| | bgcolor="#ffeedd" | [[Molecular formula]]
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| | SrCl<sub>2</sub>
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| | bgcolor="#ffeedd" | [[Molar mass]]
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| | 158.53 g/mol (anhydrous)
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| 266.62 g/mol (hexahydrate)
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| | bgcolor="#ffeedd" | Appearance
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| | White crystalline solid
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| | bgcolor="#ffeedd" | [[CAS number]]
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| | [10476-85-4] (hexahydrate)
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| [10025-70-4] (anhydrous)
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| | bgcolor="#ffeedd" | [[MSDS]]
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| | [[Wikisource:Strontium chloride MSDS|Strontium chloride MSDS]]
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| ! bgcolor="#ffeedd" colspan="2" | Other names
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| | colspan="2" |
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| * '''Strontium(II) chloride'''
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| ! bgcolor="#ffddaa" colspan="2" | Bulk properties
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| | bgcolor="#ffeedd" | [[Density]]
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| | 3.052 [[gram|g]]/[[centimetre|cm]]³ (anhydrous, monoclinic form)
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| 1.672 [[gram|g]]/[[centimetre|cm]]³ (dihydrate)
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| 1.930 [[gram|g]]/[[centimetre|cm]]³ (hexahydrate)
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| | bgcolor="#ffeedd" | [[Solubility]]
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| | [[water]]: 53.8 [[gram|g]]/100 [[centimetre|cm]]³ (20 °[[celsius|C]])
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| [[ethanol]]: very slightly soluble
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| [[acetone]]: very slightly soluble
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| | bgcolor="#ffeedd" | [[Melting point]]
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| | 874 °[[celsius|C]] (1147 [[kelvin|K]])
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| | bgcolor="#ffeedd" | [[Boiling point]]
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| | 1250 °[[celsius|C]] (1520 [[kelvin|K]])
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| | bgcolor="#ffeedd" | Hazards:
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| | Irritant
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| ! bgcolor="#ffddaa" colspan="2" | Structure
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| | bgcolor="#ffeedd" | [[Coordination geometry]]
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| | octahedral (six-coordinate)
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| | bgcolor="#ffeedd" | [[Crystal structure]]
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| | Deformed [[titanium(IV) oxide|TiO<sub>2</sub>]]
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| | bgcolor="#ffeedd" | [[Hydrate]]s
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| | dihydrate (rare)
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| hexahydrate
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| ! bgcolor="#ffddaa" colspan="2" | Related compounds
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| | bgcolor="#ffeedd" | [[strontium fluoride]]
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| [[strontium bromide]]
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| [[strontium iodide]]
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| | [[calcium chloride]]
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| [[barium chloride]]
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| |}
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| '''Strontium chloride''' (SrCl<sub>2</sub>) is a [[salt]] of [[strontium]] and [[chlorine]]. It is ionic and water-soluble. It is less toxic than [[barium chloride]], though more toxic than [[calcium chloride]]. It emits a bright red colour when heated in a flame.
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| == Chemical Properties ==
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| Strontium chloride is a typical [[ion]]ic metal [[salt]], and it can be used as a source of other strontium compounds such as strontium chromate:
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| SrCl<sub>2</sub>([[aqueous|aq]]) + [[sodium chromate|Na<sub>2</sub>CrO<sub>4</sub>]]([[aqueous|aq]]) → SrCrO<sub>4</sub>([[solid|s]]) + 2 [[sodium chloride|NaCl]]([[aqueous|aq]])
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| SrCl<sub>2</sub> always acts as a simple [[salt]], and it is completely neutral in solution.
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| == Preparation ==
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| Strontium chloride can be prepared from [[strontium hydroxide]] or [[strontium carbonate]] reacting with [[hydrochloric acid]]:
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| [[strontium hydroxide|Sr(OH)<sub>2</sub>]]([[aqueous|aq]]) + 2 [[hydrochloric acid|HCl]]([[aqueous|aq]]) → SrCl<sub>2</sub>([[aqueous|aq]]) + 2 [[water (molecule)|H<sub>2</sub>O]]([[aqueous|aq]])
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| It can also be prepared by the union of the elements, [[strontium]] and [[chlorine]].
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| == Uses ==
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| There are no major uses for strontium chloride, though it can be used to prepare less common compounds of strontium, and may be useful in reducing gum sensitivity, and is known as Elecol for this purpose. Certain toothpastes such as Sensodyne are called "strontium chloride toothpastes," although most now use potassium nitrate instead (with the exception of Sensodyne original). Like barium chloride it can be used to test for [[sulfate]] ion, though not at such low concentration, since [[strontium sulfate]] is more soluble than [[barium sulfate]].
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| SrCl<sub>2</sub>([[aqueous|aq]]) + [[sulfate|SO<sub>4</sub><sup>2−</sup>]]([[aqueous|aq]]) → SrSO<sub>4</sub>([[solid|s]]) + 2 [[chloride|Cl<sup>−</sup>]]([[aqueous|aq]])
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| Strontium chloride is occasionally used as a flame colouring agent (red) in [[pyrotechnics]], and in small quantities in [[glass]] making and [[metallurgy]]. It is added to some toothpastes to reduce [[periodontal disease]], and is used in [[homeopathic medicine]] under the name of ''strontium chlorii''.
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| The [[radioactive]] [[isotope]] strontium-89 is usually administered in the form of strontium chloride: it is used for the treatment of [[bone cancer]].
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| Sea water aquaria must add small amounts of strontium chloride to the water, as it is consumed in the production of the [[exoskeleton]]s of certain [[plankton]].
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| == Precautions ==
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| Although much less toxic than barium chloride, strontium chloride should still be handled with care.
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| ==External links==
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| [[Category:Chlorides]]
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| [[Category:Strontium compounds]]
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| [[Category:Metal halides]]
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| [[de:Strontiumchlorid]]
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| [[ja:塩化ストロンチウム]]
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| [[pt:Cloreto de estrôncio]]
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