Rubidium perchlorate

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

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 N
3D model (JSmol)	Interactive image
ChemSpider	145966 Y
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 Y Key: NQYGGOOZLKJKPS-UHFFFAOYSA-M Y 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[2]
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). N verify (what is YN ?) Infobox references

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. 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.

External links

• MSDS at Science Lab