Chemistry:Titanic acid

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Titanic acid
Orthotitanic-acid-3D-vdW.png
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 243-744-3
MeSH titanium+hydroxide
UNII
Properties
Ti(OH)
4
Molar mass 115.90 g/mol
Appearance White crystals
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Titanic acid is a general name for a family of chemical compounds of the elements titanium, hydrogen, and oxygen, with the general formula [TiO
x
(OH)
4-2x
]
n
. Various simple titanic acids have been claimed, mainly in the older literature.[1] No crystallographic and little spectroscopic support exists for these materials. Some older literature including Brauer's Handbook refers to TiO
2
as titanic acid.[2]

  • Metatitanic acid (H
    2
    TiO
    3
    ),[3]
  • Orthotitanic acid (H
    4
    TiO
    4
    )[4] or Ti(OH)
    4
    . It is described as a white salt-like powder under "TiO
    2
     · 2.16H2O
    ".[5]
  • Peroxotitanic acid (Ti(OH)
    3
    O
    2
    H
    ) has also been described as resulting from the treatment of titanium dioxide in sulfuric acid with hydrogen peroxide. The resulting yellow solid decomposes with loss of O
    2
    .[6]
  • Pertitanic acid (H
    2
    TiO
    4
    )
  • Pertitanic acid ([TiO(H
    2
    O
    2
    )]2+
    )[7]

References

  1. Frederick Pearson Treadwell (1916) (in English). Qualitative analysis. J.Wiley & sons, Incorporated. pp. 538. https://www.google.com/books/edition/Qualitative_analysis/svIZAAAAYAAJ?hl=en&gbpv=0&kptab=overview. Retrieved 26 March 2021. 
  2. C. Remigius Fresenius (1887). Qualitative Chemical Analysis. J. & A. Churchill. pp. 115–116. https://archive.org/details/qualitativechem00grovgoog. 
  3. F.P. Dunnington (1891). "On metatitanic acid and the estimation of titanium by hydrogen peroxide". Journal of the American Chemical Society 13 (7): 210–211. doi:10.1021/ja02124a032. https://zenodo.org/record/1428963. 
  4. Leonard Dobbin, Hugh Marshall (1904). Salts and their reactions: A class-book of practical chemistry. University of Edinburgh. https://books.google.com/books?id=WCBIAAAAIAAJ&q=review+orthotitanic+acid&pg=PA172. 
  5. Ehrlich, P. (1963). "Titanium(IV) Oxide Hydrate TiO2·nH2O". in Brauer, G.. Handbook of Preparative Inorganic Chemistry. 1 (2nd ed.). New York: Academic Press. p. 1218. 
  6. Ehrlich, P. (1963). "Peroxotitanic Acid H4TiO5". in Brauer, G.. Handbook of Preparative Inorganic Chemistry. 1 (2nd ed.). New York: Academic Press. p. 1219. 
  7. Fukamauchi, Hisao (1967). "Analysis using fluotitanic acid-hydrogen peroxide reagent: A review". Fresenius' Journal of Analytical Chemistry 229 (6): 413–433. doi:10.1007/BF00505508. 

Further reading

  • C.K. Lee (2004). "Preparation and Characterization of Peroxo Titanic Acid Solution Using TiCl3". Journal of Sol-Gel Science and Technology 31 (1–3): 67–72. doi:10.1023/B:JSST.0000047962.82603.d9. 


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