Rubidium perchlorate

Rubidium perchlorate[1]
Names
IUPAC name
Rubidium perchlorate
Other names
Perchloric acid rubidium salt,
Rubidium chlorate(VII), Rubidii perchloras (lat.)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.476 Edit this at Wikidata
EC Number
  • 236-840-1
  • InChI=1S/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 checkY
    Key: NQYGGOOZLKJKPS-UHFFFAOYSA-M checkY
  • InChI=1/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1
    Key: NQYGGOOZLKJKPS-REWHXWOFAS
  • [Rb+].[O-]Cl(=O)(=O)=O
Properties
RbClO4
Molar mass 184.918 g/mol
Appearance Colorless crystals
Density 2.878 g/cm3
2.71 g/cm3 over 279 °C
Melting point 281 °C (538 °F; 554 K)
Boiling point 600 °C (1,112 °F; 873 K) (decomposes)
see chart
3×10−3[2]
Hazards
GHS labelling:
GHS03: OxidizingGHS07: Exclamation mark
Warning
H272, H302, H315, H319, H332, H335
P210, P220, P221, P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 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
2
0
0
OX
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Rubidium perchlorate, RbClO4, is the perchlorate of rubidium. It is an oxidizing agent, as are all perchlorates.

Preparation and properties

Rubidium perchlorate can be obtained through the careful heating of a rubidium chlorate solution, leading to a disproportionation reaction with the release of oxygen gas:[3]

2 RbClO3 → RbClO4 + RbCl + O2

When heated, it decomposes into the chloride and oxygen:[4]

RbClO4 → RbCl + 2 O2

It has two polymorphs. Below 279 °C, it crystallizes in orthorhombic crystal system with lattice constants a = 0.927 nm, b = 0.581 nm, c = 0.753 nm. Over 279 °C, it has a cubic structure with lattice constant a = 0.770 nm.[1]

Table of solubility in water:[1]

Temperature (°C) 0 8.5 14 20 25 50 70 99
Solubility (g / 100 ml) 1.09 0.59 0.767 0.999 1.30 3.442 6.72 17.39

References

  1. ^ a b c F. Brezina, J. Mollin, R. Pastorek, Z. Sindelar. Chemicke tabulky anorganickych sloucenin (Chemical tables of inorganic compounds). SNTL, 1986.
  2. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 1138561630.
  3. ^ Abegg, R.; Auerbach, F. (1908). Handbuch der anorganischen Chemie. Vol. 2. S. Hirzel. p. 431.
  4. ^ d' Ans, Jean; Lax, Ellen (1997). Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale. Vol. 3 (4th ed.). Berlin: Springer. p. 686. ISBN 3-540-60035-3. OCLC 312750698.

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