# Rubidium nitrate
> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Rubidium_nitrate
> Markdown URL: https://mediated.wiki/source/Rubidium_nitrate.md
> Source: https://en.wikipedia.org/wiki/Rubidium_nitrate
> Source revision: 1333819378
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)
{{Short description|Chemical compound RbNO3}}
{{Chembox
| Watchedfields = changed
| verifiedrevid = 464384326
| ImageFile = RbNO3-xtal-1992-CM-3D-sf.png
| ImageFile1 = Rubidiumnitrat.png
| ImageSize1 = 250px
| ImageCaption1 = Unit cell of rubidium nitrate
| ImageAlt1 = Unit cell
| IUPACName = Rubidium nitrate
| OtherNames =
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 23971
| InChI = 1S/NO3.Rb/c2-1(3)4;/q-1;+1
| InChIKey = RTHYXYOJKHGZJT-UHFFFAOYAE
| SMILES = [Rb+].[O-][N+]([O-])=O
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/NO3.Rb/c2-1(3)4;/q-1;+1
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = RTHYXYOJKHGZJT-UHFFFAOYSA-N
| InChIKey1 = RTHYXYOJKHGZJT-UHFFFAOYSA-N
| CASNo = 13126-12-0
| CASNo_Ref = {{cascite|correct|CAS}}
| EINECS = 236-060-1
| PubChem = 25731
| RTECS = QV0900000
}}
|Section2={{Chembox Properties
| Formula = RbNO3
| MolarMass = 147.473 g/mol
| Appearance = White [hygroscopic](/source/hygroscopic) solid
| Density = 3.11 g/cm3
| MeltingPtC = 310
| MeltingPt_notes = decomposes
| BoilingPtC = 578
| BoilingPt_notes =
| Solubility = 44.28 g/100 mL (16 °C)
65.0 g/100 mL (25 °C)[W. Lenk, H. Prinz, A. Steinmetz,"Rubidium and Rubidium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. {{doi|10.1002/14356007.a23_473.pub2}}]
| Solubility1 = very slightly soluble
| Solvent1 = acetone
| RefractIndex = 1.524
| MagSus = −41.0·10−6 cm3/mol
}}
| Section3 = {{Chembox Structure
| Structure_ref = [{{Cite journal|title=Phase Transition in Rubidium Nitrate at 346 K and Structure at 296, 372, 413 and 437 K|author=Jutta Pohl, Dieter Pohl, Gunadi Adiwidjaja|journal=[Acta Crystallographica](/source/Acta_Crystallographica) Section B|volume=B48|date=1992|issue=2 |pages=160–166|doi=10.1107/S0108768191013459|doi-access=free}}]
| CrystalStruct = trigonal
| SpaceGroup = P31
| PointGroup =
| LattConst_a = 10.474 Å
| LattConst_b =
| LattConst_c = 7.443 Å
| LattConst_alpha =
| LattConst_beta =
| LattConst_gamma =
| LattConst_ref =
| LattConst_Comment =
| UnitCellVolume = 707.2 Å3
| UnitCellFormulas =
| Coordination =
| MolShape =
| OrbitalHybridisation =
| Dipole =
}}
|Section7={{Chembox Hazards
| ExternalSDS =
| GHS_ref = [{{Cite web |last=PubChem |title=Rubidium nitrate |url=https://pubchem.ncbi.nlm.nih.gov/compound/25731 |access-date=2026-01-19 |website=pubchem.ncbi.nlm.nih.gov |language=en}}]
| GHSPictograms = {{GHS03}}{{GHS07}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|H272|H315|H319|H335}}
| PPhrases = {{P-phrases|P210|P220|P261|P264|P264+P265|P271|P280|P302+P352|P304+P340|P305+P351+P338|P319|P321|P332+P317|P337+P317|P362+P364|P370+P378|P403+P233|P405|P501}}
| MainHazards = Oxidant
| NFPA-H = 1
| NFPA-F = 0
| NFPA-R = 0
| NFPA-S = OX
| FlashPt = Non-flammable
| LD50 = 4625 mg/kg (rat, oral)
}}
|Section8={{Chembox Related
| OtherCations = [Lithium nitrate](/source/Lithium_nitrate)
[Sodium nitrate](/source/Sodium_nitrate)
[Potassium nitrate](/source/Potassium_nitrate)
[Caesium nitrate](/source/Caesium_nitrate)
| OtherAnions = [Rubidium sulfate](/source/Rubidium_sulfate)
[Rubidium chloride](/source/Rubidium_chloride)
| OtherCompounds =
}}
}}
'''Rubidium nitrate''' is an [inorganic compound](/source/inorganic_compound) with the formula [Rb](/source/rubidium)[NO3](/source/nitrate). This [alkali metal nitrate](/source/alkali_metal_nitrate) [salt](/source/Salt_(chemistry)) is a white [hygroscopic](/source/Hygroscopy) solid that is highly soluble in water.
==Properties==
In a [flame test](/source/flame_test), RbNO3 gives a mauve/light purple colour.
left|thumb|Solubility of rubidium nitrate in water{{Clear left}}
==Production==
RbNO3 can be prepared either by dissolving rubidium metal, its [hydroxide](/source/Rubidium_hydroxide) or [carbonate](/source/Rubidium_carbonate) in [nitric acid](/source/nitric_acid).
:{{chem2 | RbOH + HNO3 -> RbNO3 + H2O }}
:{{chem2 | Rb2CO3 + 2 HNO3 -> 2 RbNO3 + CO2 + H2O }}
:{{chem2 | 2 Rb + 2 HNO3 -> 2 RbNO3 + H2 }}
==Uses==
Rubidium compounds have very few applications.[ Like [caesium nitrate](/source/caesium_nitrate), it is used in [infrared](/source/infrared) radiation optics, in [pyrotechnic composition](/source/pyrotechnic_composition)s as a [pyrotechnic colorant](/source/pyrotechnic_colorant) and as an [oxidizer](/source/oxidizer), ''e.g.'' in [decoys](/source/decoy_flare) and [illumination flare](/source/flare)s although it is rarely used in [fireworks](/source/fireworks) to produce a red-violet colour. It is also used as a raw material for preparation of other rubidium compounds and rubidium metal, for manufacture of [catalyst](/source/catalyst)s and in [scintillation counter](/source/scintillation_counter)s.
==References==
{{Rubidium compounds}}
{{nitrates}}
{{DEFAULTSORT:Rubidium Nitrate}}
Category:Rubidium compounds
Category:Nitrates
Category:Pyrotechnic oxidizers
Category:Pyrotechnic colorants
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Adapted from the Wikipedia article [Rubidium nitrate](https://en.wikipedia.org/wiki/Rubidium_nitrate) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Rubidium_nitrate?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.
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