Difference between revisions of "Rubidium nitrate"
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===Chemical=== | ===Chemical=== | ||
Rubidium nitrate is an oxidizer and mixtures with combustible materials are flammable. | 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=== | ===Physical=== | ||
| − | Rubidium nitrate is a white crystalline powder that is highly soluble in water and very slightly soluble in [[acetone]]. In a flame test, | + | Rubidium nitrate is a white crystalline powder that is highly soluble in water and very slightly soluble in [[acetone]]. In a flame test, RbNO<sub>3</sub> gives a mauve/light purple color. |
==Availability== | ==Availability== | ||
| − | Rubidium nitrate is sold by chemical suppliers. | + | Rubidium nitrate is sold by chemical suppliers, but it's not cheap. |
==Preparation== | ==Preparation== | ||
| − | Can be easily prepared by dissolving rubidium carbonate in nitric acid, the recrystallized from the resulting solution. [[Rubidium hydroxide]] can also be used. | + | Can be easily prepared by dissolving rubidium carbonate in nitric acid, the recrystallized from the resulting solution. [[Rubidium hydroxide]] can also be used, albeit this reaction is very exothermic, so the neutralization should be done slowly. |
: Rb<sub>2</sub>CO<sub>3</sub> + 2 HNO<sub>3</sub> → 2 RbNO<sub>3</sub> + H<sub>2</sub> + CO<sub>2</sub> | : Rb<sub>2</sub>CO<sub>3</sub> + 2 HNO<sub>3</sub> → 2 RbNO<sub>3</sub> + H<sub>2</sub> + CO<sub>2</sub> | ||
Latest revision as of 17:59, 28 March 2024
| 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): | |
| LD50 (Median dose)
|
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.
Contents
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, but it's not cheap.
Preparation
Can be easily prepared by dissolving rubidium carbonate in nitric acid, the recrystallized from the resulting solution. Rubidium hydroxide can also be used, albeit this reaction is very exothermic, so the neutralization should be done slowly.
- 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.
