TlOH - THALLIUM (I) HYDROXIDE

Properties of thallium (I) hydroxide:

Light yellow, decomposes upon melting. It is readily soluble in water, forms an alkaline solution. Shows strongly basic properties; reacts with acids and amphoteric hydroxides. It absorbs CO2 from the air.


Molar mass g/mol 221.39
Density g/cm3 7.44
Melting point °C 125

Methods for preparation of thallium (I) hydroxide:

4Tl + 2H2O + O2 = 4TlOH (50-70° C).

Tl2O + H2O = 2TlOH.

Tl2SO4 + Ba(OH)2 = 2TlOH + BaSO4↓.


Chemical reactions with thallium (I) hydroxide:

2TlOH = TlO2 + H2O (above 125° C).

TlOH • 2H2O = TlOH + 2H2O (45-60° C, vacuum),

2{TlOH • 2H2O} = Tl2O + 5H2O (140° C).

TlOH(diluted) + (n)H2O = [Tl(H2O)6](+) + OH(-).

TlOH + HCl(diluted) = TlCl↓ + H2O,

TlOH + HNO3(diluted) = TlNO3 + H2O.

2TlOH(diluted) + Zn(NO3)2 = Zn(OH)2↓ + 2TlNO3,

2TlOH(conc.) + Zn(OH)2 = Tl2[Zn(OH)4].

2TlOH + O2 = Tl2O3 + H2O (200° C),

2TlOH + 4NaOH + 2Cl2 = Tl2O3↓ + 4NaCl + 3H2O.

TlOH(diluted) + CO2 = TlHCO3↓,

2TlOH + CO2 = Tl2CO3↓ + H2O (ethanol).


 

Did you know?

Isotopes are atoms with the same atomic number, but different atomic masses (different number neutrons.)