Rubidium nitrate

Last updated
Rubidium nitrate
RbNO3-xtal-1992-CM-3D-sf.png
Rubidiumnitrat.png
Unit cell of rubidium nitrate
Names
IUPAC name
Rubidium nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.032.767 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 236-060-1
PubChem CID
RTECS number
  • QV0900000
  • InChI=1S/NO3.Rb/c2-1(3)4;/q-1;+1 Yes check.svgY
    Key: RTHYXYOJKHGZJT-UHFFFAOYSA-N Yes check.svgY
  • 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 147.473 g/mol
AppearanceWhite 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)
65.0 g/100 mL (25 °C) [1]
−41.0·10−6 cm3/mol
1.524
Structure [2]
trigonal
P31
a = 10.474 Å, c = 7.443 Å
707.2 Å3
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Oxidant
NFPA 704 (fire diamond)
NFPA 704.svgHealth 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
Rubidium sulfate
Rubidium chloride
Other cations
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).
Yes check.svgY  verify  (what is  Yes check.svgYX mark.svgN ?)

Rubidium nitrate is an inorganic compound with the formula Rb NO3. This alkali metal nitrate salt is white and highly soluble in water.

Contents

Properties

Solubility of rubidium nitrate in water RbNO3 Solubilite dans eau.png
Solubility of rubidium nitrate in water

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 colour.

Uses

Rubidium compounds have very few applications. [1] Like caesium nitrate, it is used in infrared radiation optics, in pyrotechnic compositions as a pyrotechnic colorant and as an oxidizer, e.g. in decoys and illumination flares although it is rarely used in fireworks to produce a red-violet colour. 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.

Production

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

References

  1. 1 2 W. Lenk, H. Prinz, A. Steinmetz,"Rubidium and Rubidium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. doi:10.1002/14356007.a23_473.pub2
  2. ↑ Jutta Pohl, Dieter Pohl, Gunadi Adiwidjaja (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 .{{cite journal}}: CS1 maint: multiple names: authors list (link)
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