Caesium perchlorate
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
| Caesium perchlorate | |
|---|---|
| Image:Cesium perchlorate.png | |
| IUPAC name | Caesium perchlorate |
| Other names | Cesium perchlorate |
| Identifiers | |
| CAS number | |
| PubChem | |
| EINECS number | |
| SMILES | [O-]Cl(=O)(=O)=O.[Cs+] |
| Properties | |
| Molecular formula | CsClO4 |
| Molar mass | 232.355 g.mol-1 |
| Appearance | Colorless crystalls |
| Density | 3.327 g.cm-3[1] |
| Melting point |
250 °C[1] |
| Solubility in water | 1.974 g / 100 ml |
| Hazards | |
| R-phrases | R8 |
| S-phrases | S17 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references | |
Caesium perchlorate, CsClO4 (also known as cesium perchlorate), is a perchlorate of caesium. It forms white hygroscopic crystals in the solid state soluble in water and alcohol.
Under temperature 219 °C it has orthorhombic structure Pnma with lattice constants a = 9.82, b = 6.00, c = 7.79 (.10-1 nm). Above 219 °C it crystallizes in cubic crystallic structure F43m with lattice constant a = 7.98 . 10-1 nm.[1]
CsClO4 is the least soluble of the alkali metal perchlorates (followed by Rb, K, Li, and Na), a property which may be used for separatory purposes and even for gravimetric analysis. [1] This low solubility is attributed to the formation of aggregates between the metal atom and the perchlorate anion.
Table of solubility in water[1][1]:
| Temperature (°C) | 0 | 8.5 | 14 | 25 | 40 | 50 | 60 | 70 | 99 |
|---|---|---|---|---|---|---|---|---|---|
| Solubility (g / 100 ml) | 0.8 | 0.91 | 1.91 | 1.974 | 3.694 | 5.47 | 7.30 | 9.79 | 28.57 |
When heated, CsClO4 decomposes to CsCl at 575 °C. Like all perchlorates, it is a strong oxidant and may react violently with reducing agents and organic materials, especially at elevated temperatures.
Caesium perchlorate helped in discovering francium and identifying it as an alkali metal because francium-223 coprecipitated with cesium perchlorate.[1][1]
See also
References
External links
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
