Rubidium nitrate

Rubidium nitrate
Rb+(NO−3)
Unit cell
Unit cell of rubidium nitrate
Names
IUPAC name
Rubidium nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.032.767 Edit this at Wikidata
EC Number
  • 236-060-1
RTECS number
  • QV0900000
  • InChI=1S/NO3.Rb/c2-1(3)4;/q-1;+1 checkY
    Key: RTHYXYOJKHGZJT-UHFFFAOYSA-N checkY
  • InChI=1S/NO3.Rb/c2-1(3)4;/q-1;+1
    Key: RTHYXYOJKHGZJT-UHFFFAOYAE
  • Key: RTHYXYOJKHGZJT-UHFFFAOYSA-N
  • [Rb+].[O-][N+]([O-])=O
Properties
RbNO3
Molar mass 147.472 g·mol−1
Appearance White hygroscopic solid
Density 3.11 g/cm3
Melting point 310 °C (590 °F; 583 K) decomposes
Boiling point 578 °C (1,072 °F; 851 K)
  • 44.28 g/100 mL (16 °C (61 °F))
  • 65.0 g/100 mL (25 °C (77 °F))
Solubility in acetone very slightly soluble
−41.0×10−6 cm3/mol
1.524
Structure
trigonal
P31
a = 10.474 Å, c = 7.443 Å
707.2 Å3
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Oxidant
GHS labelling:
GHS03: OxidizingGHS07: Exclamation mark
Danger
H272, H315, H319, H335
P210, P220, P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
1
0
0
OX
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
4625 mg/kg (rat, oral)
Related compounds
Other anions
Other cations
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkYX markN ?)

Rubidium nitrate is an inorganic compound with the formula RbNO3. This alkali metal nitrate salt is a white hygroscopic solid that is highly soluble in water.

Properties

In a flame test, RbNO3 gives a mauve/light purple colour.

Solubility of rubidium nitrate in water

Production

structure of solid rubidium nitrate

RbNO3 can be prepared either by dissolving rubidium metal, its hydroxide or carbonate in nitric acid.

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

Uses

Rubidium compounds have very few applications. Like caesium nitrate, it is used in infrared radiation optics. It is also used as a raw material for preparation of other rubidium compounds and rubidium metal, for manufacture of catalysts and in scintillation counters.

References

  1. 1 2 Lenk, W.; Prinz, H.; Steinmetz, A. (2010). "Rubidium and Rubidium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a23_473.pub2. ISBN 978-3-527-30673-2.
  2. ↑ Pohl, Jutta; Pohl, Dieter; Adiwidjaja, Gunadi (1992). "Phase Transition in Rubidium Nitrate at 346 K and Structure at 296, 372, 413 and 437 K". Acta Crystallographica Section B. B48 (2): 160–166. doi:10.1107/S0108768191013459.
  3. ↑ PubChem. "Rubidium nitrate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-19.