Rubidium perchlorate

Rubidium perchlorate^[1]
Names
	IUPAC name Rubidium perchlorate
	Other names Perchloric acid rubidium salt,; Rubidium chlorate(VII), Rubidii perchloras (lat.)
Identifiers
CAS Number	13510-42-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	145966 ;
ECHA InfoCard	100.033.476
EC Number	236-840-1;
PubChem CID	23673707;
CompTox Dashboard (EPA)	DTXSID60884621 ;
	InChI InChI=1S/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Key: NQYGGOOZLKJKPS-UHFFFAOYSA-M ; InChI=1/ClHO4.Rb/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Key: NQYGGOOZLKJKPS-REWHXWOFAS;
	SMILES [Rb+].[O-]Cl(=O)(=O)=O;
Properties
Chemical formula	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)
Solubility in water	see chart
Solubility product (Ksp)	3×10−3
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H302, H315, H319, H332, H335
Precautionary statements	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)	2 0 0 OX
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	(what is ?)
	Infobox references

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[]

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