Chemistry:Titanic acid

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Orthotitanic acid
Orthotitanic-acid-3D-vdW.png
Names
IUPAC name
Orthotitanic acid
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 refers to TiO
2 as titanic acid,[2] and the dioxide forms an unstable hydrate when TiCl4 hydrolyzes.[3]

  • Metatitanic acid (H
    2    TiO
    3    ),[4]
  • Orthotitanic acid (H
    4    TiO
    4    )[5] or Ti(OH)
    4    . It is described as a white salt-like powder under "TiO
    2     · 2.16H2O    ".[6]
  • 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    .[7]
  • Pertitanic acid (H
    2    TiO
    4    )[citation needed]
  • Pertitanic acid ([TiO(H
    2    O
    2    )]2+    )[8]

References

  1. ↑ Frederick Pearson Treadwell (1916) (in English). Qualitative analysis. J.Wiley & sons, Incorporated. pp. 538. https://books.google.com/books?id=svIZAAAAYAAJ. Retrieved 26 March 2021. 
  2. ↑ C. Remigius Fresenius (1887). Qualitative Chemical Analysis. J. & A. Churchill. pp. 115–116. https://archive.org/details/qualitativechem00grovgoog. 
  3. ↑ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 421.
  4. ↑ 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. 
  5. ↑ 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. 
  6. ↑ 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. 
  7. ↑ Ehrlich, P. (1963). "Peroxotitanic Acid H4TiO5". in Brauer, G.. Handbook of Preparative Inorganic Chemistry. 1 (2nd ed.). New York: Academic Press. p. 1219. 
  8. ↑ 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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