Thallium(I) carbonate

Thallium(I) carbonate
Names
Other names
thallium monocarbonate
Identifiers
6533-73-9 YesY
3D model (Jmol) Interactive image
ChemSpider 21553 YesY
ECHA InfoCard 100.026.759
EC Number 229-434-0
PubChem 23031
Properties
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
Structure
monoclinic
Hazards
not listed
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 4: Very short exposure could cause death or major residual injury. E.g., VX gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
0
4
0
Lethal dose or concentration (LD, LC):
21 mg/kg (mouse, oral)[1]
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).
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Infobox references

Thallium(I) carbonate (Tl2CO3) is a chemical compound. It can be used for the manufacture of imitation diamonds, in chemical analysis to test for carbon disulfide, and as a fungicide. Like other thallium compounds, it is considered 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.[2]

Safety

Conditions/substances to avoid are: acids, magnesium with hydride, aluminium, hydrosulfuric acid, phosphorus pentoxide.

Preparation

Thallium carbonate is created by the saturation of hot aqueous thallium(I) hydroxide with carbon dioxide.

References

  1. 1 2 "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
  2. "Emergency First Aid Treatment Guide THALLOUS CARBONATE". Chemical Emergency Preparedness and Prevention. U.S. Environmental Protection Agency. Retrieved 2 June 2012.


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