Thallium(I) carbonate

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]

Thallium(I) carbonate
Other names
thallium monocarbonate
3D model (JSmol)
ECHA InfoCard 100.026.759
EC Number
  • 229-434-0
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
not listed
NFPA 704
Flammability code 0: Will not burn. E.g. waterHealth code 4: Very short exposure could cause death or major residual injury. E.g. VX gasReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
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).


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]


  1. ^ a b "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.
H2CO3 He
BeCO3 B C (NH4)2CO3,
O F Ne
Al2(CO3)3 Si P S Cl Ar
Sc Ti V Cr MnCO3 FeCO3 CoCO3 NiCO3 CuCO3 ZnCO3 Ga Ge As Se Br Kr
Rb2CO3 SrCO3 Y Zr Nb Mo Tc Ru Rh Pd Ag2CO3 CdCO3 In Sn Sb Te I Xe
BaCO3   Hf Ta W Re Os Ir Pt Au Hg Tl2CO3 PbCO3 (BiO)2CO3 Po At Rn
Fr Ra   Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
La2(CO3)3 Ce2(CO3)3 Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Ac Th Pa UO2CO3 Np Pu Am Cm Bk Cf Es Fm Md No Lr
List of CAS numbers by chemical compound

This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element.

List of inorganic compounds

Although most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), "traditional" names have also been kept where they are in wide use or of significant historical interests.

Solubility table

The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at 1 atmosphere pressure. Units of solubility are given in grams per 100 millilitres of water (g/100 ml), unless shown otherwise. The substances are listed in alphabetical order.

Thallium(I) fluoride

Thallium(I) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine with the formula TlF. It consists of hard white orthorhombic crystals which are slightly deliquescent in humid air but revert to the anhydrous form in dry air. It has a distorted sodium chloride (rock salt) crystal structure, due to the 6s2 inert pair on Tl+.Thallium(I) fluoride is unusual among the thallium(I) halides in that it is very soluble in water, while the others are not.

Thallium compounds


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