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Thallium(I) carbonate

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Thallium(I) carbonate
Names
Other names
thallium monocarbonate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.026.759 Edit this at Wikidata
EC Number
  • 229-434-0
  • InChI=1S/CH2O3.2Tl/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 checkY
    Key: DASUJKKKKGHFBF-UHFFFAOYSA-L checkY
  • InChI=1/CH2O3.2Tl/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
    Key: DASUJKKKKGHFBF-NUQVWONBAJ
  • [Tl+].[Tl+].[O-]C([O-])=O
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
−101.6·10−6 cm3/mol
Structure
monoclinic
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
4
0
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).
checkY verify (what is checkY☒N ?)

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, hydrogen sulfide, phosphorus pentoxide.

Preparation

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

References

  1. ^ a b "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life or Health Concentrations (IDLH). 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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