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Sodium orthovanadate is the inorganic compound with the chemical formula Na3VO4·2H2O (sodium orthovanadate dihydrate). It is a salt of the VO3−
4
oxyanion. It is a colorless, water-soluble solid.[2]

Sodium orthovanadate
Na3VO4dihydrate.tif
Names
IUPAC name
Sodium vanadate(V)
Other names
Sodium vanadium oxide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.033.883
RTECS number YW1120000
Properties
Na3VO4
Molar mass 183.908 g/mol
Appearance white powder
Density 2.16 g/cm3, solid
Melting point 858 °C (1,576 °F; 1,131 K)
22.17 g/100 mL
Solubility insoluble in ethanol
Structure
cubic
Thermochemistry
164.8 J/mol K
190 J/mol K
−1757 kJ/mol
Hazards
Main hazards Harmful.
NFPA 704
Flammability code 0: Will not burn. E.g., waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gasReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
330 mg/kg (oral, rat)
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

Contents

Synthesis and structureEdit

Sodium orthovanadate is produced by dissolving vanadium(V) oxide in a solution of sodium hydroxide:

V2O5 + 6 NaOH → 2 Na3VO4 + 3 H2O

The salt features tetrahedral VO3−
4
centers linked to octahedral Na+ sites.[3]

ReactionsEdit

Acidification of orthovanadate induces condensation to polyoxovanadates, specifically decavanadate.[4]

Vanadates exhibit a variety of biological activities, in part because they serve as structural mimics of phosphates.[5][6]

ReferencesEdit

  1. ^ http://www.sciencelab.com/msds.php?msdsId=9925008
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9. 
  3. ^ Kato, K.; Takayama-Muromachi, E. (1987). "Die Struktur des Trinatriumvanadattrihydrats" [The structure of trisodium vanadate trihydrate]. Acta Crystallogr. C43: 1030–1032. doi:10.1107/S0108270187093120. 
  4. ^ Klemperer, W. G.; Yaghi, O. (1983). "Tetrabutylammonium Trihydrogen Decavanadate(V)". Inorg. Synth. 27: 83. doi:10.1002/9780470132586.ch15. 
  5. ^ Korbecki, Jan; Baranowska-Bosiacka, Irena; Gutowska, Izabela; Chlubek, Dariusz (2012). "Biochemical and medical importance of vanadium compounds" (PDF). Acta Biochim. Polon. 59: 195–200. 
  6. ^ Crans, D. C.; Chatterjee, P. B. (2013). "Vanadium biochemistry". In Reedijk, Jan; Poeppelmeier, Kenneth. Comprehensive Inorganic Chemistry II. 3. pp. 323–342. doi:10.1016/B978-0-08-097774-4.00324-7. ISBN 978-0-08-097774-4. 

See alsoEdit