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Home> Encyclopedia >Chloride>Inorganic Salts>Other Auxiliary Agent
Rubidium chloride structure
Rubidium chloride structure

Rubidium chloride

Iupac Name:rubidium(1+);chloride
CAS No.: 7791-11-9
Molecular Weight:120.92
Modify Date.: 2022-11-29 04:15
Introduction: Rubidium chloride is a kind of alkali metal halide consisting of rubidium and chlorine. It has applications in various kinds of fields. It can be used as a gasoline additive and an excellent non-invasive biomarker. For example, it can be used as a radioactive isotope to trace many kinds of biological processes such as measuring the coronary collateral blood flow. It can also be used for the preparation of competent cells in molecular cloning. In addition, it is a kind of antidepressant which is capable of increasing the dopamine and norepinephrine levels. The effect is also related with the stimulation of rubidium chloride on the generation of nitric oxide. View more+
1. Names and Identifiers
1.1 Name
Rubidium chloride
1.2 Synonyms

EINECS 232-240-9 MFCD00011187 NSC 84273 RbCl Rubidium chloride (RbCl) RUBIDIUM CHLORIDE, FOR MOLECULAR BIOLOGY Rubidium monochloride Rubidiumchloridewhitextl

1.3 CAS No.
1.4 CID
1.6 Molecular Formula
ClRb (isomer)
1.7 Inchi
1.8 InChIkey
1.9 Canonical Smiles
1.10 Isomers Smiles
2. Properties
2.1 Density
2.8 g/mL at 25 °C(lit.)
2.1 Melting point
715 °C(lit.)
2.1 Boiling point
1390 °C
2.1 Refractive index
2.1 Flash Point
2.1 Precise Quality
2.1 PSA
2.1 logP
2.1 Solubility
910 g/L (20 oC)
2.2 Appearance
White beads
2.3 Storage
Store at R.T.
2.4 Chemical Properties
White, crystalline powder; lustrous. When heated it decrepi-tates, melts, and volatizes. Soluble in water; almostinsoluble in alcohols.
2.5 Physical Properties
Rubidium chloride is prepared by adding hydrochloric acid to a solution of rubidium carbonate or hydroxide. The solution is evaporated to obtain welldefined colorless cubic crystals of rubidium chlorideRbOH + HCl → RbCl + H2ORb2CO3 + 2HCl → 2RbCl + H2O + CO2
2.6 Color/Form
2.7 PH
5.0-8.0 (25℃, 1M in H2O)
2.8 Water Solubility
H2O: 910 g/L (20 oC)
2.9 Stability
Stable. Incompatible with bromine trifluoride, strong acids. Hygroscopic - protect from moisture.
2.10 StorageTemp
Store at R.T.
3. Use and Manufacturing
3.1 Definition
ChEBI: An inorganic chloride composed of rubidium and chloride ions in a 1:1 ratio.
3.2 GHS Classification
Signal: Warning
GHS Hazard Statements
Aggregated GHS information provided by 88 companies from 2 notifications to the ECHA C&L Inventory.

Reported as not meeting GHS hazard criteria by 87 of 88 companies. For more detailed information, please visit ECHA C&L website

Of the 1 notification(s) provided by 1 of 88 companies with hazard statement code(s):

H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.

Precautionary Statement Codes
P264, P280, P305+P351+P338, P33, and P313
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3.3 Purification Methods
Crystallise it from water (0.7mL/g) by cooling to 0o from 100o. Its solubility in H2O is 77.3% at 0.6o, 90.3% at 70o and 147% at boiling point. [D.nges in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 951-955 1963.] Rubidium chlorideSupplier
3.4 Usage
Rubidium chloride is used in preparing rubidium metal and many rubidium salts. Also, it is used in pharmaceuticals as an antidepressant and as a density-gradient medium for centrifugal separation of viruses, DNA, and large particles. Other applications are as an additive to gasoline to improve its octane number and as a catalyst.
4. Safety and Handling
4.1 Risk Statements
4.1 Safety Statements
4.1 Hazard Declaration
NONH for all modes of transport
4.1 Caution Statement
P264, P280, P305+P351+P338, P33, P313
4.1 WGK Germany
4.1 Report

Reported in EPA TSCA Inventory.

4.2 Safety

Moderately toxic by ingestion and intraperitoneal routes. Experimental reproductive effects. Mutation data reported. Reacts violently with BrF3. When heated to decomposition it emits toxic fumes of Cl, RbCl, and Rb2O. See also RUBIDIUM and CHLORIDES.

Safety Statements:
22:  Do not breathe dust
24:  Avoid contact with skin
25:  Avoid contact with eyes

4.3 Sensitive
4.4 Specification

 Rubidium chloride (7791-11-9) also can be called Chlorure de rubidium and Rubidium monochloride .Depending on conditions, solid RbCl exists in one of three arrangements or polymorphs as determined with holographic imaging.
It is hazardous,so the first aid measures and others should be known.Such as: When on the skin: should  flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing.Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen.Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.
In addition, Rubidium chloride (7791-11-9) is not compatible with acids, and you must not take it with incompatible materials and not be exposured to moist air or water.And also prevent it to broken down into hazardous decomposition products: hydrogen chloride.

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4.5 Toxicity
LD50 orally in Rabbit: 4440 mg/kg

2.Hazard identification

2.1 Classification of the substance or mixture

Not classified.

2.2 GHS label elements, including precautionary statements

Pictogram(s) No symbol.
Signal word

No signal word.

Hazard statement(s)


Precautionary statement(s)








2.3 Other hazards which do not result in classification


6. Other Information
6.0 Usage
Rubidium chloride is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology. It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives. Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA. This compound increases the competence of the cell.
6.1 Usage
It is used in testing for perchloric acid in laboratories, and is a source of rubidium. Rubidium chloride is used as a catalyst and additive in petrol. It has been employed to prepare molecular nanowires for nanoscale devices. Thin layer of rubidium chloride enhance the attributes of organic light-emitting diodes. Rubidium chloride also plays an essential role for enhancement in the memory storage property. It is an excellent non-invasive biomarker, and used in biomedical research.
6.2 Usage
Rubidium chloride is the mostly used rubidium compound, and finds its applications in various fields ranging from electrochemistry to molecular biology. It is used as a non-invasive biomarker, anergic and apathetic depressives in the field of biology; In addition, appropriate preparation of this salt is used as a radioactive isotope to study the perfusion of heart muscle. In the field of biochemistry, it is used to induce cells to take up DNA.
6.3 Manufacturing Info
Rubidium chloride (RbCl): ACTIVE
7. Computational chemical data
  • Molecular Weight: 120.92g/mol
  • Molecular Formula: ClRb
  • Compound Is Canonicalized: True
  • XLogP3-AA: null
  • Exact Mass: 119.8806424
  • Monoisotopic Mass: 119.8806424
  • Complexity: 2
  • Rotatable Bond Count: 0
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 1
  • Topological Polar Surface Area: 0
  • Heavy Atom Count: 2
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 2
8. Question & Answer
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10. Realated Product Infomation