Editing Barium hydroxide (section)

{{Chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 476994496
| Name = Barium hydroxide
| ImageFile1  = Ba(OH)2monohydrate.tif
| ImageFile2 = Ba(OH)2 octahydrate.JPG
| ImageName = Barium hydroxide octahydrate
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 26408
| InChI = 1/Ba.2H2O/h;2*1H2/q+2;;/p-2
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 32592
| SMILES = [Ba+2].[OH-].[OH-]
| InChIKey = RQPZNWPYLFFXCP-NUQVWONBAR
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/Ba.2H2O/h;2*1H2/q+2;;/p-2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = RQPZNWPYLFFXCP-UHFFFAOYSA-L
| CASNo = 17194-00-2
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo2_Ref = {{cascite|correct|CAS}}
| CASNo2 = 22326-55-2
| CASNo2_Comment = (monohydrate)
| CASNo3_Ref = {{cascite|correct|CAS}}
| CASNo3 = 12230-71-6
| CASNo3_Comment = (octahydrate)
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 1OHB71MYBK
| UNII2_Ref = {{fdacite|correct|FDA}}
| UNII2 = P27GID97XM
| UNII2_Comment = (monohydrate)
| UNII3_Ref = {{fdacite|correct|FDA}}
| UNII3 = L5Q5V03TBN
| UNII3_Comment = (octahydrate)
| RTECS = CQ9200000
| PubChem = 28387
| Gmelin = 846955
| EINECS = 241-234-5
  }}
|Section2={{Chembox Properties
| Formula = Ba(OH)<sub>2</sub>
| MolarMass = 171.34 g/mol (anhydrous) <br> 189.355 g/mol (monohydrate) <br> 315.46 g/mol (octahydrate)
| Appearance = white solid
| Solubility = ''mass of BaO (not Ba(OH)<sub>2</sub>):'' <br> 1.67 g/100 mL (0&nbsp;°C) <br> 3.89 g/100 mL (20&nbsp;°C) <br> 4.68 g/100 mL (25&nbsp;°C) <br> 5.59 g/100 mL (30&nbsp;°C) <br> 8.22 g/100 mL (40&nbsp;°C) <br> 11.7 g/100 mL (50&nbsp;°C)  <br> 20.94 g/100 mL (60&nbsp;°C) <br> 101.4 g/100 mL (100&nbsp;°C){{Citation needed|date=May 2020}}
| Solvent = other solvents
| SolubleOther = low
| MeltingPtC = 78
| MeltingPt_notes = (octahydrate)<br/>300&nbsp;°C (monohydrate) <br> 407&nbsp;°C (anhydrous)
| BoilingPtC = 780
| BoilingPt_notes = 
| Density = 3.743 g/cm<sup>3</sup> (monohydrate) <br> 2.18 g/cm<sup>3</sup> (octahydrate, 16&nbsp;°C)
| RefractIndex = 1.50 (octahydrate) 
| pKb = 0.15 (first OH<sup>–</sup>), 0.64 (second OH<sup>–</sup>)<ref>{{cite web|language=de|url=http://www.periodensystem-online.de/index.php?show=list&id=acid&prop=pKb-Werte&sel=oz&el=92|title=Sortierte Liste: pKb-Werte, nach Ordnungszahl sortiert. - Das Periodensystem online}}</ref>
| MagSus = −53.2·10<sup>−6</sup> cm<sup>3</sup>/mol  }}
|Section3={{Chembox Structure
| Coordination = 
| CrystalStruct = octahedral
  }}
|Section4={{Chembox Thermochemistry
| Thermochemistry_ref = <ref>{{CRC90}}</ref>
| DeltaHf = &minus;944.7&nbsp;kJ·mol<sup>−1</sup>
| DeltaHfus = 16&nbsp;kJ·mol<sup>−1</sup>
  }}
|Section7={{Chembox Hazards
| NFPA-H = 3
| NFPA-F = 1
| NFPA-R = 1
| GHSPictograms = {{GHS05}}{{GHS07}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|302|314|332|412}}
| PPhrases = {{P-phrases|}}
| FlashPt = Non-flammable
| LD50 = 308 mg/kg (rat, oral)
| ExternalSDS = [https://beta-static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory-documents/sds/chemicals/chemicals-b/S25188.pdf Fisher Scientific]
  }}
|Section8={{Chembox Related
| OtherAnions = [[Barium oxide]]<br />[[Barium peroxide]]
| OtherCations = [[Calcium hydroxide]]<br />[[Strontium hydroxide]]
  }}
}}

'''Barium hydroxide''' is a [[chemical compound]] with the [[chemical formula]] Ba(OH)<sub>2</sub>.  The monohydrate (''x'' = 1), known as baryta or baryta-water, is one of the principal compounds of [[barium]]. This white granular [[Hydrate|monohydrate]] is the usual commercial form.