| Names | |
|---|---|
| Other names thallium monocarbonate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.026.759  |
| EC Number |
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PubChem CID | |
| UNII | |
CompTox Dashboard (EPA) | |
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| Properties | |
Chemical formula | Tl2CO3 |
| Molar mass | 468.776 g/mol |
| Appearance | white crystals |
| Odor | odorless |
| Density | 7.11 g/cm3, solid |
| Melting point | 272 °C (522 °F; 545 K) |
| 5.2 g/100 mL (25 °C) 27.2 g/100 mL (100 °C) | |
| Solubility | insoluble in alcohol, ether, acetone |
| −101.6·10−6 cm3/mol | |
| Structure | |
Crystal structure | monoclinic |
| Hazards | |
EU classification (DSD) (outdated) | not listed |
| NFPA 704 (fire diamond) | |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) | 21 mg/kg (mouse, oral)[1] |
LDLo (lowest published) | 23 mg/kg (rat, oral)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Thallium(I) carbonate is the inorganic compound with the formula Tl2CO3. It is a white, water-soluble solid. It has no or very few commercial applications. It is produced by treatment of thallous hydroxide with CO2.[2]
Safety
Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice. Due to its toxicity, it is listed in the United States List of Extremely Hazardous Substances as of 2007.[3]
References
- ^ a b "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ Micke, Heinrich; Wolf, Hans Uwe (2000). "Thallium and Thallium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a26_607.
- ^ "Emergency First Aid Treatment Guide THALLOUS CARBONATE". Chemical Emergency Preparedness and Prevention. U.S. Environmental Protection Agency. Retrieved 2 June 2012.