Strontium hydroxide

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

<templatestyles src="Chembox/styles.css"/>

Template:Chembox image cellTemplate:Chembox headerbarTemplate:Chembox IndexlistTemplate:Chembox JmolTemplate:Chembox ChEMBLTemplate:Chembox ECHATemplate:Chembox E numberTemplate:Chembox IUPHAR ligandTemplate:Chembox UNIITemplate:Chembox CompToxTemplate:Chembox headerbarTemplate:Chembox SolubilityInWaterTemplate:Chembox headerbarTemplate:Chembox headerbarTemplate:Chembox headerbarTemplate:Chembox Datapage checkTemplate:Chembox Footer
Strontium hydroxide
Template:Longitem Template:Unbulleted list
ChEBI Template:Unbulleted list
ChemSpider Template:Unbulleted list
DrugBank Template:Unbulleted list
EC Number Template:Unbulleted list
Template:Longitem 847042
KEGG Template:Unbulleted list
Template:Longitem Template:Unbulleted list
RTECS number Template:Unbulleted list
Script error: No such module "collapsible list".
Script error: No such module "collapsible list".
Template:Longitem Sr(OH)2
Molar mass 121.63 g/mol (anhydrous)
139.65 g/mol (monohydrate)
265.76 g/mol (octahydrate)
Appearance prismatic colourless crystals
deliquescent
Density 3.625 g/cm3 (anhydrous)
1.90 g/cm3 (octahydrate)
Melting point Template:Chembox CalcTemperatures
Boiling point Template:Chembox CalcTemperatures
Solubility insoluble in acetone
soluble in acid, NH4Cl
Basicity (pKb) 0.3 (first OH–), 0.83 (second OH–)[2]
Template:Longitem −40.0·10−6 cm3/mol
Template:Longitem tetragonal (octahydrate)
NFPA 704 (fire diamond) Template:NFPA 704 diamond
Flash point Template:Chembox CalcTemperatures
Template:Longitem Strontium oxide
Strontium peroxide
Template:Longitem Beryllium hydroxide
Magnesium hydroxide
Calcium hydroxide
Barium hydroxide

Template:Chembox Footer/trackingScript error: No such module "TemplatePar".Template:Short description

Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. It is synthesized by combining a strontium salt with a strong base. Sr(OH)2 exists in anhydrous, monohydrate, or octahydrate form.

Preparation

Because Sr(OH)2 is slightly soluble in cold water, its preparation can be easily carried out by the addition of a strong base such as NaOH or KOH, drop by drop to a solution of any soluble strontium salt, most commonly Sr(NO3)2 (strontium nitrate). The Sr(OH)2 will precipitate out as a fine white powder. From here, the solution is filtered, and the Sr(OH)2 is washed with cold water and dried.[3]

Applications

Strontium hydroxide is used chiefly in the refining of beet sugar and as a stabilizer in plastic. It may be used as a source of strontium ions when the chlorine from strontium chloride is undesirable. Strontium hydroxide absorbs carbon dioxide from the air to form strontium carbonate.

Safety

Strontium hydroxide is a severe skin, eye and respiratory irritant. It is harmful if swallowed.

References

<templatestyles src="Reflist/styles.css" />

  1. ↑ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, Template:ISBN
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".

Script error: No such module "Check for unknown parameters".

External links

Script error: No such module "Navbox". Template:Hydroxides

Script error: No such module "Authority control".

Retrieved from "http://debianws.lexgopc.com/wiki143/index.php?title=Strontium_hydroxide&oldid=2343853"