:Rubidium perchlorate
{{chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 464384370
| ImageFile = rubidium perchlorate.png
| ImageSize = 120px
| IUPACName = Rubidium perchlorate
| OtherNames = Perchloric acid rubidium salt,
Rubidium chlorate(VII), Rubidii perchloras (lat.)
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 145966
| InChI = 1/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1
| InChIKey = NQYGGOOZLKJKPS-REWHXWOFAS
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = NQYGGOOZLKJKPS-UHFFFAOYSA-M
| CASNo_Ref = {{cascite|changed|??}}
| CASNo = 13510-42-4
| EINECS = 236-840-1
| PubChem = 23673707
| SMILES = [Rb+].[O-]Cl(=O)(=O)=O
}}
|Section2={{Chembox Properties
| Formula = RbClO4
| MolarMass = 184.918 g/mol
| Appearance = Colorless crystals
| Density = 2.878 g/cm3
2.71 g/cm3 over 279 °C
| MeltingPtC = 281
| BoilingPtC = 600
| BoilingPt_notes = (decomposes)
| Solubility = see chart
| SolubilityProduct = 3{{e|−3}}{{cite book |author1=John Rumble |title=CRC Handbook of Chemistry and Physics |date=June 18, 2018 |publisher=CRC Press |isbn=1138561630 |pages=5–189|edition=99 |language=English}}
}}
|Section3={{Chembox Hazards
| MainHazards =
| NFPA-H = 2
| NFPA-F = 0
| NFPA-R = 0
| NFPA-S = OX
| GHSPictograms = {{GHS03}}{{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|272|302|315|319|332|335}}
| PPhrases = {{P-phrases|210|220|221|261|264|270|271|280|301+312|302+352|304+312|304+340|305+351+338|312|321|330|332+313|337+313|362|370+378|403+233|405|501}}
| FlashPt =
| AutoignitionPt =
}}
}}
Rubidium perchlorate, RbClO4, is the perchlorate of rubidium. It is an oxidizing agent, as are all perchlorates.
Preparation and properties
Rubidium perchlorate can be obtained through the careful heating of a rubidium chlorate solution, leading to a disproportionation reaction with the release of oxygen gas:{{Cite book|last=Abegg|first=R.|url=https://archive.org/stream/handbuchderanor09koppgoog#page/n451/mode/2up|title=Handbuch der anorganischen Chemie|last2=Auerbach|first2=F.|publisher=S. Hirzel|year=1908|volume=2|pages=431}}
:2 RbClO3 → RbClO4 + RbCl + O2
When heated, it decomposes into the chloride and oxygen:{{Cite book|last=d' Ans|first=Jean|title=Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale.|last2=Lax|first2=Ellen|publisher=Springer|year=1997|isbn=3-540-60035-3|edition=4th|volume=3|location=Berlin|pages=686|oclc=312750698}}
:RbClO4 → RbCl + 2 O2
It has two polymorphs. Below 279 °C, it crystallizes in orthorhombic crystal system with lattice constants a = 0.927 nm, b = 0.581 nm, c = 0.753 nm. Over 279 °C, it has a cubic structure with lattice constant a = 0.770 nm.
class="wikitable"
! Temperature (°C) | 0 | 8.5 | 14 | 20 | 25 | 50 | 70 | 99 |
Solubility (g / 100 ml)
| 1.09 | 0.59 | 0.767 | 0.999 | 1.30 | 3.442 | 6.72 | 17.39 |
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References
External links
- [http://www.sciencelab.com/xMSDS-Rubidium_Perchlorate-9924845 MSDS at Science Lab]
{{Rubidium compounds}}
{{Perchlorates}}