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Rubidium nitrate

From Wikipedia, the free encyclopedia

Rubidium nitrate
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 147.473 g/mol
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)
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 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
 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).
checkY verify (what is checkY☒N ?)

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

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Transcription

Properties

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. ^ a b 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)
This page was last edited on 2 April 2024, at 12:21
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