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Sodium zincate
IUPAC name

sodium tetrahydroxozincate(II)

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CAS Number

  • 12179-14-5 check

3D model (JSmol)

  • Interactive image
ECHA InfoCard 100.032.117 Edit this at Wikidata
EC Number
  • 235-3 ft42-1

PubChem CID

  • 166652

CompTox Dashboard (EPA)

  • DTXSID70893224 Edit this at Wikidata


  • InChI=1S/2Na.4H2O.Zn/h;;4*1H2;/q2*+1;;;;;+2/p-4

  • [OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Zn+2]


Chemical formula

Molar mass 179.418 g/mol

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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Infobox references

Sodium zincate refers to lớn anionic zinc oxides or hydroxides, depending on conditions. In the applications of these materials, the exact formula is not necessarily important and it is likely that aqueous zincate solutions consist of mixtures.[1]

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Solutions of sodium zincate may be prepared by dissolving zinc, zinc hydroxide, or zinc oxide in an aqueous solution of sodium hydroxide.[2] Simplified equations for these complex processes are:

ZnO + H2O + 2 NaOH → Na2Zn(OH)4
Zn + 2 H2O + 2 NaOH → Na2Zn(OH)4 + H2

From such solutions, one can crystallize salts of containing the anions Zn(OH)42−, Zn2(OH)62−, and Zn(OH)64−. Na2Zn(OH)4 consists of tetrahedral zincate ion and octahedral sodium cations.[3]
The salt Sr2Zn(OH)6 features zinc in an octahedral coordination sphere.


Related oxides are also known such as Na2ZnO2,[4] Na2Zn2O3,[5] Na10Zn4O9.[6]


  1. ^ Glenn O. Mallory, Juan B. Hajdu, (1990), Electroless Plating: Fundamentals and Applications, American Electroplaters and Surface Finishers Society, , William Andrew Inc., ISBN 0-936569-07-7
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  3. ^ Synthese und Kristallstruktur von Na2Zn(OH)4, R. Stahl , R. Niewa , H. Jacobs, Zeitschrift für anorganische und allgemeine Chemie, volume 625, pp. 48 - 50, doi:10.1002/(SICI)1521-3749(199901)625:1<48::AID-ZAAC48>3.0.CO;2-L
  4. ^ D. Trinschek, M. Jansen (1996): "Na2ZnO2, ein neues Natriumzinkat". Zeitschrift für Naturforschung B, volume 51, issue 5, pages 711-714. doi:10.1515/znb-1996-0515
  5. ^ Eine neue Modifikation von Na2Zn2O3, D. Trinschek, M. Jansen: , Z. Naturforschung 51b, (1996), 917-21
  6. ^ Ein neues Oxozinkat mit trigonal-planar koordiniertem Zink, D. Trinschek, M. Jansen: Na10Zn4O9, Zeitschrift für anorganische und allgemeine Chemie volume 622 (1996), pp. 245-50