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Rubidium chloride

Properties, data and information sources.

 

Contents

Rubidium chloride is an organic chemical compound from the chloride group (alkali metal halides); it is the rubidium salt of hydrochloric acid.

 

Names and Identifiers

Name
Rubidium chloride
Formula
ClRb
RbCl
Molar mass
120.918 (g/mol)
CAS registry number
7791-11-9
EC number EINECS
232-240-9
InChI Key
FGDZQCVHDSGLHJ-UHFFFAOYSA-M

Other names, synonyms
Rubidium monochloride; Rubidium(I) chloride

 

Chemical formulas

Molecular formula and structural formula of Rubidium chloride:

 

ClRb or RbCl

Mr = 120.9178 g/mol
SMILES:

 

Data and Properties

In its pure state, rubidium chloride is a white, odorless, hygroscopic solid that forms colorless crystals.

solubility:
+ Highly soluble in water (77 g/L at 0°C; 910 g/L at 20°C; 1300 g/L at 100 °C). Soluble in methanol (14.1 g/L at 25 °C).
- Slightly soluble in alcohol (0.78 g/L at 25 °C).
melting point
718 °C
boiling point
1390 °C
density
2.80 g cm-3 at 20 °C
refractive index
nD = 1.5322
standard enthalpy of formation
-435.14 kJ/mol at 25 °C
standard entropie
95.9 J/(mol K) at 25 °C
heat capacity
52.4 J/(mol K)
magnetic susceptibility χ
46.0 × 10-6 cm3 mol-1
crystal structure:
Cubic crystal system (NaCl type), space group Fm3m No. 225 with a = 658.1 pm, Z = 4.

 

Percentage and isotopic composition:

Mass-related elemental composition and isotope proportions of the compound Rubidium chloride - ClRb - calculated based on molecular mass.

Symbol
Element ENumber x
of atoms ExData of the element
and isotopes *Percentages
of isotopesPercentage of
Ex in formula massCl
Chlorine1ΣAr = 35.45 u
35Cl: 34.96885 u [75,80 %]
36Cl: 35.96831 u [<< 1 %]
37Cl: 36.9659 u [24,2 %] 
35Cl: 22.22262 %
36Cl: trace
37Cl: 7.09482 %
29.3174 %Rb
Rubidium1ΣAr = 85.4678 u
85Rb: 84.91179 u [72,17 %]
87Rb: 86.90918 u [27,83 %] 
85Rb: 51.01161 %
87Rb: 19.67096 %
70.6826 %

*) The third column lists the atomic masses or isotope masses of the elements involved and - in square brackets - the natural isotope composition.

 

More calculated data

The molar mass is M = 120.9178 grams per mole.

The amount of substance in one kilogram of the substance is n = 8.27 mol.

The amount of substance in one gram of the substance is n = 0.008 mol.

Monoisotopic mass: 119.880642436 Da - related to 35Cl85Rb.

 

Hazard warnings according to GHS

(General information without guarantee of accuracy and completeness! The information does not replace the chemical safety data sheet or a risk assessment, but rather provides a general overview of the risk posed by the hazardous substance.

LD50 (rat, oral): 4440 mg/kg.

Labeling in the EU: See ECHA Substance Infocard 100.029.310.

For toxicology and occupational safety when handling Rubidium chloride as well as measures to be taken in case of danger, see: Hazardous Substances Information System GESTIS, ZVG-Nr. 122858.

 

External Sources

PubChem:ID 62683ChemSpider:ID 56434UNII of the FDA (USA):Unique Ingredient Identifier N3SHC5273SEPA CompTox Chemicals Dashboard:DTXSID5064881Other CAS RN:12265-61-1; 2018280-09-4; 59217-70-8 (also used, outdated or deleted registration numbers)

 

Manufacturers and Sources of Supply

The table below lists producers and suppliers of Rubidium chloride as a commercial chemical for laboratories, research, industry and production with the corresponding contact details.

 

Literature Sources

[0] - Specialist and research articles in scientific journals via PubMed: Rubidium_chloride.

 

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Last update: 2024-09-26

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