Thallium(I) carbonate

Thallium(I) carbonate
Names
	Other names thallium monocarbonate
Identifiers
CAS Number	6533-73-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	21553 ;
ECHA InfoCard	100.026.759
EC Number	229-434-0;
PubChem CID	23031;
UNII	H673633FTH ;
CompTox Dashboard (EPA)	DTXSID1024332 ;
	InChI InChI=1S/CH2O3.2Tl/c2-1(3)4;;/h(H2,2,3,4);;/q;2+1/p-2 Key: DASUJKKKKGHFBF-UHFFFAOYSA-L ; InChI=1/CH2O3.2Tl/c2-1(3)4;;/h(H2,2,3,4);;/q;2+1/p-2 Key: DASUJKKKKGHFBF-NUQVWONBAJ;
	SMILES [Tl+].[Tl+].[O-]C([O-])=O;
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)
Solubility in water	5.2 g/100 mL (25 °C) ; 27.2 g/100 mL (100 °C)
Solubility	insoluble in alcohol, ether, acetone
Magnetic susceptibility (χ)	−101.6·10−6 cm3/mol
Structure
Crystal structure	monoclinic
Hazards
EU classification (DSD) (outdated)	not listed
NFPA 704 (fire diamond)	0 4 0
	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).
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	Infobox references

Thallium(I) carbonate is the inorganic compound with the formula Tl₂ CO₃. 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]

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References

"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.

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[IDLH-1] "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[2] 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.

[3] "Emergency First Aid Treatment Guide THALLOUS CARBONATE". Chemical Emergency Preparedness and Prevention. U.S. Environmental Protection Agency. Retrieved 2 June 2012.