Dihydroxide-titanium oxide

Dihydroxide-titanium oxide
Dihydroxide-titanium oxide
Are common
Systematic ; name	Dihydroxide-titanium oxide
Traditional names	Metatitanic acid, β- titanic acid
Chem. formula	TiO (OH) 2
Physical properties
condition	white amorphous substance
Molar mass	97.89 g / mol
Classification
Reg. CAS number
Pubchem
Reg. EINECS number
SMILES
Inchi
Chemspider

Titanium dihydroxy-oxide ( titanium acid, β- titanium acid) is an inorganic compound, titanium oxohydroxide with the formula TiO (OH) ₂ or H ₂ TiO ₃ , a white amorphous substance, insoluble in water.

Content

Getting

The effect of alkali solution on soluble oxo salt of titanium:

{\mathsf {TiOSO_{4}+2NaOH\ {\xrightarrow {}}\ TiO(OH)_{2}\downarrow +Na_{2}SO_{4}}}

{\ displaystyle {\ mathsf {TiOSO_ {4} + 2NaOH \ {\ xrightarrow {}} \ TiO (OH) _ {2} \ downarrow + Na_ {2} SO_ {4}}}}

The effect of alkali solution on soluble titanium (IV) salt:

{\mathsf {TiCl_{4}+4NaOH\ {\xrightarrow {}}\ TiO(OH)_{2}\downarrow +4NaCl+H_{2}O}}

{\ displaystyle {\ mathsf {TiCl_ {4} + 4NaOH \ {\ xrightarrow {}} \ TiO (OH) _ {2} \ downarrow + 4NaCl + H_ {2} O}}}

Occurs with slow decomposition of orthotitanoic acid :

{\mathsf {H_{4}TiO_{4}\ {\xrightarrow {}}\ H_{2}TiO_{3}+H_{2}O}}

{\ displaystyle {\ mathsf {H_ {4} TiO_ {4} \ {\ xrightarrow {}} \ H_ {2} TiO_ {3} + H_ {2} O}}}

Physical Properties

Titanium dihydroxide-oxide is a white amorphous substance.

It falls out of solution in the form of TiO ₂ · n H ₂ O hydrate. Freshly precipitated substance is chemically more active than “old” sediment.

Chemical Properties

Decomposes when heated:

{\mathsf {TiO(OH)_{2}\ {\xrightarrow {600-700^{o}C}}\ TiO_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {TiO (OH) _ {2} \ {\ xrightarrow {600-700 ^ {o} C}} \ TiO_ {2} + H_ {2} O}}}

Reacts with concentrated acids:

{\mathsf {TiO(OH)_{2}+H_{2}SO_{4}\ {\xrightarrow {100^{o}C}}\ TiOSO_{4}\downarrow +2H_{2}O}}

{\ displaystyle {\ mathsf {TiO (OH) _ {2} + H_ {2} SO_ {4} \ {\ xrightarrow {100 ^ {o} C}} \ TiOSO_ {4} \ downarrow + 2H_ {2} O }}}

{\mathsf {TiO(OH)_{2}+2HNO_{3}\ {\xrightarrow {}}\ Ti(NO_{3})_{2}(OH)_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {TiO (OH) _ {2} + 2HNO_ {3} \ {\ xrightarrow {}} \ Ti (NO_ {3}) _ {2} (OH) _ {2} + H_ {2 } O}}}

Reacts with hydrogen peroxide (qualitative detection):

{\mathsf {TiO(OH)_{2}+H_{2}O_{2}+(n-2)H_{2}O\ {\xrightarrow {}}\ TiO(O_{2})\cdot nH_{2}O\downarrow }}

{\ displaystyle {\ mathsf {TiO (OH) _ {2} + H_ {2} O_ {2} + (n-2) H_ {2} O \ {\ xrightarrow {}} \ TiO (O_ {2}) \ cdot nH_ {2} O \ downarrow}}}

- yellow precipitate;

{\mathsf {TiO(OH)_{2}+H_{2}O_{2}+2HNO_{3}+H_{2}O\ {\xrightarrow {}}\ [Ti(H_{2}O)_{4}(O_{2})](NO_{3})_{2}\downarrow }}

{\ displaystyle {\ mathsf {TiO (OH) _ {2} + H_ {2} O_ {2} + 2HNO_ {3} + H_ {2} O \ {\ xrightarrow {}} \ [Ti (H_ {2} O) _ {4} (O_ {2})] (NO_ {3}) _ {2} \ downarrow}}}