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R2252

Sigma-Aldrich

Rubidium chloride

ReagentPlus®, ≥99.0% (metals basis)

Synonym(s):

Rubidium monochloride, Rubidium(I) chloride

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About This Item

Linear Formula:
RbCl
CAS Number:
7791-11-9
Molecular Weight:
120.92
EC Number:
232-240-9
MDL number:
MFCD00011187
UNSPSC Code:
12352302
PubChem Substance ID:
57654587
NACRES:
NA.23
Assay:
≥99.0% (metals basis)
form:
powder
solubility:
H2O: soluble, clear to slightly hazy

Quality Level

200

product line

ReagentPlus®

Assay

≥99.0% (metals basis)

form

powder

impurities

≤10000 ppm Metal Trace Analysis (ICP)

mp

715 °C (lit.)

solubility

H2O: soluble, clear to slightly hazy

density

2.8 g/mL at 25 °C (lit.)

absorption

≤0.4 at 280 in H2O at 50%

SMILES string

[Cl-].[Rb+]

InChI

1S/ClH.Rb/h1H;/q;+1/p-1

InChI key

FGDZQCVHDSGLHJ-UHFFFAOYSA-M

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General description

Rubidium chloride is an alkali metal halide saltand an excellent water-soluble crystalline rubidium source. It is widely used in thefield of biomedical research, electrochemistry, nanomaterial synthesis, and thepetrol industry.

Application

Rubidium chloride can be used as a dopant to synthesize magnesium oxide nanoparticles.

It can be used to enhance the performance of OLEDs. For example, a thin layer of RbCl inserted into a multilayer OLED (ITO/NPB/Alq3/Al) can significantly increase its electroluminescent efficiency. This can happen due to the lowering of the electron injection barrier and enhancing the recombination rate induced by trap sites provided by the RbCl layer.

Rubidium chloride (RbCl) can also be used as a non-invasive biomarker.

It may also be used to study the chronotypic effects of Rb in hamsters.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF4925V
WXBF4334V
WXBF3659V
WXBF3205V
WXBF3018V

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is Rubidium Chloride, Product R2252, soluble in?

    This product is soluble in water (100 mg/ml), yielding a clear to slightly hazy, colorless to very faint yellow solution.  Also, per the chemicals encyclopedia published by the Royal Society of Chemistry, 13th Edition, 1 gram will dissolve in 90ml of Methanol or 1650ml of Ethanol.

  4. How is Rubidium Chloride, Product R2252, used in the area of Material Science?

    Rubidium Chloride has been used to prepare molecular nanowires as potential precursors of nanoscale devices.  (Akutagawa, T., et al., Formation of oriented molecular nanowires on mica surface. Proc. Natl. Acad. Sci. USA, 99(8), 5028-5033 (2002).)

  5. Do I need to be aware of anything when handling Rubidium Chloride, Product R2252?

    Yes, Rubidium Chloride is hygroscopic and will absorb water.  This should be taken into account when handling and storing this compounds.  Flushing the head space of the bottle with Nitrogen and storing it in a dessicator will help to keep the material from absorbing moisture.

  6. How is Product R2252, Rubidium Chloride made?

    There are many techniques and methods for Rubidium Chloride - here a few: One way to make rubidium chloride is to react the hydroxide with hydrochloric acid. The resulting salt can then be purified by recrystallization.RbOH(aq) + HCl(aq) -> RbCl(aq) + H2O(l)Rubidium(I) bromide can also be made by the neutralization of rubidium(I) carbonate with hydrobromic acid. The resulting salt can then be purified by recrystallization.Rb2(CO3)(aq) + 2HBr(aq) -> 2RbBr(aq) + H2O(l) + CO2(g)While not a normal route of preparation because of the expense, rubidium metal reacts vigorously with all the halogens to form rubidium halides. So, it burns with chlorine, Cl2, to form rubidium(I) chloride, RbCl.2Rb(s) + Cl2(g) -> 2RbCl(s)

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  8. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

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    Ask a Scientist here.

Marking bark beetle parasitoids within the host plant with rubidium for dispersal studies
Hougardy E, et al.
Entomologia Experimentalis et Applicata, 108(2), 107-114 (2003)
Rubidium chloride fuses split circadian activity rhythms in hamsters housed in bright constant light
Hallonquist J, et al.
Chronobiology International, 11(2), 65-71 null
The effect of rubidium chloride on properties of organic light-emitting diodes
Lu Z, et al.
Solid-State Electron, 53(11), 1154-1158 (2009)
Yucheng Jiang et al.
Carbohydrate research, 341(2), 262-269 (2005-12-07)
The Gibbs energy interaction parameters of RbCl with some monosaccharides (D-glucose, D-galactose, D-xylose, and D-arabinose) in water, g(ES), were obtained from electromotive force (emf) measurements of the electrochemical cell without liquid junction and containing two ion-selective electrodes (ISE): K-ISEmid R:RbCl(m(E))mid
Yui-May Hsiao et al.
Nuclear medicine and biology, 36(1), 39-45 (2009-02-03)
In locations that lack nearby cyclotron facilities for radionuclide production, generator-based (68)Ga radiopharmaceuticals might have clinical utility for positron emission tomography (PET) studies of myocardial perfusion and other physiological processes. The lipophilic and monocationic (67)Ga-labeled gallium chelates of five novel
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