Rubidium nitrate

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Rubidium nitrate
Names
IUPAC name
Rubidium nitrate
Preferred IUPAC name
Rubidium nitrate
Systematic IUPAC name
Rubidium nitrate
Other names
Nitric acid, rubidium salt
Properties
RbNO3
Molar mass 147.473 g/mol
Appearance White hygroscopic solid
Odor Odorless
Density 3.11 g/cm3 (at 25 °C)
Melting point 310 °C (590 °F; 583 K) (decomposes)
Boiling point Decomposes
44.28 g/100 ml (16 °C)
65.0 g/100 ml (25 °C)
Solubility Slightly soluble in acetone
Vapor pressure ~0 mmHg
Hazards
Safety data sheet Sigma-Aldrich
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
4,625 mg/kg (rat, oral)
Related compounds
Related compounds
Lithium nitrate
Sodium nitrate
Potassium nitrate
Caesium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Rubidium nitrate is an inorganic compound with the formula RbNO3.

Properties

Chemical

Rubidium nitrate is an oxidizer and mixtures with combustible materials are flammable.

Rubidium nitrate will decompose above 300-310 °C to yield rubidium nitrite and oxygen.

Physical

Rubidium nitrate is a white crystalline powder that is highly soluble in water and very slightly soluble in acetone. In a flame test, RbNO3 gives a mauve/light purple color.

Availability

Rubidium nitrate is sold by chemical suppliers.

Preparation

Can be easily prepared by dissolving rubidium carbonate in nitric acid, the recrystallized from the resulting solution. Rubidium hydroxide can also be used.

Rb2CO3 + 2 HNO3 → 2 RbNO3 + H2 + CO2
RbOH + HNO3 → RbNO3 + H2O

Projects

  • Oxidizer
  • Compound collecting

Handling

Safety

Rubidium nitrate is an oxidizer and should be handled with care.

Storage

In closed bottles.

Disposal

Should be recycled, as rubidium compounds are expensive.

References

Relevant Sciencemadness threads