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Telluric acid
Telluric acid.svg
IUPAC name Hexahydroxidotellurium
Other names Orthotelluric acid
CAS number 7803-68-1
PubChem 61609
Molecular formula H6O6Te
Molar mass 229.64 g/mol
Appearance White monoclinic crystals
Density 3.07 g/cm3
Melting point

136°C (409.15 K)

Solubility in water 50.1 g/100 ml at 30°C
Acidity (pKa) 7.68, 11.0 at 18°C
Molecular shape octahedral
Dipole moment 0 D
Main hazards corrosive
Related compounds
Other anions hydrotelluric acid
tellurous acid
hydrogen telluride
Related compounds Teflic acid,
Sulfuric acid
Selenic acid
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Telluric acid is a chemical compound. It is an acid. Its chemical formula is H6TeO6. It contains hydrogen and tellurate ions. It contains the TeO66- form of the tellurate ion.

Telluric acid is a weak acid. It reacts with strong bases to make tellurates. It is a powerful oxidizing agents. It can be dehydrated to make tellurium trioxide. The metatelluric acid, H2TeO4, does not exist.

Telluric acid can be made by reacting tellurium dioxide with chromium trioxide or hydrogen peroxide.

It is used to make other tellurates such as sodium tellurate.

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