Telluric acid

Telluric acid
Names
	IUPAC name Hexahydroxidotellurium
	Other names Orthotelluric acid; Hexahydroxytellurium; Hexahydroxy-λ6-tellane; Tellurium hexahydroxide; Tellurium(VI) hydroxide;
Identifiers
CAS Number	7803-68-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30463 ;
ChemSpider	55517 ;
ECHA InfoCard	100.029.334
PubChem CID	62686;
UNII	WE1KZR49WU ;
CompTox Dashboard (EPA)	DTXSID5064887 ;
	InChI InChI=1S/H2O4Te/c1-5(2,3)4/h(H2,1,2,3,4) Key: XHGGEBRKUWZHEK-UHFFFAOYSA-N ; InChI=1/H2O4Te/c1-5(2,3)4/h(H2,1,2,3,4) Key: XHGGEBRKUWZHEK-UHFFFAOYAT;
	SMILES O[Te](O)(O)(O)(O)O;
Properties
Chemical formula	Te(OH)6
Molar mass	229.64 g·mol−1
Appearance	White monoclinic crystals
Density	3.07 g/cm3
Melting point	136 °C (277 °F; 409 K)
Solubility in water	50.1 g/(100 ml) at 30 °C
Acidity (pKa)	7.5, 11, 14
Conjugate base	Tellurate
Structure
Molecular shape	octahedral
Dipole moment	0 D
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	corrosive
Related compounds
Other anions	Hydrotelluric acid; Tellurous acid; Hydrogen telluride
Related compounds	Teflic acid; Sulfuric acid; Selenic acid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Telluric acid, or more accurately orthotelluric acid, is a chemical compound with the formula Te(OH)₆, often written as H₆TeO₆. It is a white crystalline solid made up of octahedral Te(OH)₆ molecules which persist in aqueous solution.^[3] In the solid state, there are two forms, rhombohedral and monoclinic, and both contain octahedral Te(OH)₆ molecules,^[4] containing one hexavalent tellurium (Te) atom in the +6 oxidation state, attached to six hydroxyl (–OH) groups, thus, it can be called tellurium(VI) hydroxide. Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.^[4]^[5] It is used as tellurium-source in the synthesis of oxidation catalysts.

^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, ISBN 0-8493-0594-2
^ Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2^nd ed.). Oxford: Pergamon (published 1984). Entry 219. ISBN 0-08-029214-3. LCCN 82-16524.
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
^ ^a ^b Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred (1999), Advanced Inorganic Chemistry (6th ed.), New York: Wiley-Interscience, ISBN 0-471-19957-5
^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

[CRC-1] Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, ISBN 0-8493-0594-2

[P82db-2] Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2^nd ed.). Oxford: Pergamon (published 1984). Entry 219. ISBN 0-08-029214-3. LCCN 82-16524.

[Greenwood-3] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[Cotton-4] Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred (1999), Advanced Inorganic Chemistry (6th ed.), New York: Wiley-Interscience, ISBN 0-471-19957-5

[holleman-5] Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

[1]

[2]

[3]

[4]

[5]

Names


IUPAC name Hexahydroxidotellurium
Other names Orthotelluric acid Hexahydroxytellurium Hexahydroxy-λ⁶-tellane Tellurium hexahydroxide Tellurium(VI) hydroxide
Identifiers
CAS Number	7803-68-1^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30463^Y
ChemSpider	55517^Y
ECHA InfoCard	100.029.334
PubChem CID	62686
UNII	WE1KZR49WU^Y
CompTox Dashboard (EPA)	DTXSID5064887
InChI InChI=1S/H2O4Te/c1-5(2,3)4/h(H2,1,2,3,4)^Y Key: XHGGEBRKUWZHEK-UHFFFAOYSA-N^Y InChI=1/H2O4Te/c1-5(2,3)4/h(H2,1,2,3,4) Key: XHGGEBRKUWZHEK-UHFFFAOYAT
SMILES O[Te](O)(O)(O)(O)O
Properties
Chemical formula	Te(OH)₆
Molar mass	229.64 g·mol⁻¹
Appearance	White monoclinic crystals
Density	3.07 g/cm³
Melting point	136 °C (277 °F; 409 K)
Solubility in water	50.1 g/(100 ml) at 30 °C^[1]
Acidity (pK_a)	7.5, 11, 14^[2]
Conjugate base	Tellurate
Structure
Molecular shape	octahedral
Dipole moment	0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	corrosive
Related compounds
Other anions	Hydrotelluric acid Tellurous acid Hydrogen telluride
Related compounds	Teflic acid Sulfuric acid Selenic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references