Sodium metavanadate

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Sodium vanadate
Identifiers
CAS number 13718-26-8 YesY
PubChem 4148882
EC number 237-272-7
ChEBI CHEBI:75221 N
RTECS number YW1050000
Jmol-3D images Image 1
Properties
Molecular formula NaVO3
Molar mass 121.9295 g/mol
Appearance yellow crystalline solid
hygroscopic
Density 5.15 g/cm3
Melting point 630 °C (1,166 °F; 903 K)
Solubility in water 19.3 g/100 mL (20 °C)
40.8 g/100 mL (80 °C)
Thermochemistry
Specific
heat capacity
C
97.6 J/mol K
Std molar
entropy
So298
113.8 J/mol K
Std enthalpy of
formation
ΔfHo298
-1148 kJ/mol
Hazards
EU Index Not listed
Main hazards Toxic, irritant
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point Non-flammable
LD50 98 mg/kg (rat, oral)
Related compounds
Other anions Sodium orthovanadate
Other cations Potassium metavanadate
Ammonium metavanadate
Related compounds Vanadium pentoxide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Sodium metavanadate is a yellow solid which is soluble in water. Its use is limited to its hygroscopic property. Its natural forms include mineral metamunirite (anhydrous) and a dihydrate, munirite. Both are very rare, metamunirite is now known only from V- and U-bearing sandstone formations of central-western USA and munirite from Pakistan and South Africa.[1]

References[edit]