Sodium metavanadate

Sodium metavanadate Basic information
Product Name:Sodium metavanadate
Synonyms:Vanadicacid(HVO3),sodiumsalt;vanadicacid,monosodiumsalt;Vanadicacidsodiumsalt;SODIUM METAVANADATE, TECH., 90%;SODIUM METAVANADATE, ANHYDROUS, 99.9% METALS BASIS;SODIUM META VANADATE, 99.9%;Sodium metavanadate dihydrate;SODIUM VANADATE(V)
CAS:13718-26-8
MF:NaO3V
MW:121.93
EINECS:237-272-7
Product Categories:inorganic compound;straight chain compounds;Inorganics
Mol File:13718-26-8.mol
Sodium metavanadate Structure
Sodium metavanadate Chemical Properties
Melting point 600 °C
density 3.241 g/cm3
storage temp. Sealed in dry,Room Temperature
form Powder
color White to faintly yellow-beige or pale green
OdorOdorless
Water Solubility Soluble in water.
Merck 14,8700
Exposure limitsNIOSH: Ceiling 0.05 mg/m3
Stability:Stable.
CAS DataBase Reference13718-26-8(CAS DataBase Reference)
EPA Substance Registry SystemSodium vanadate (13718-26-8)
Safety Information
Hazard Codes T
Risk Statements 25-36/37/38
Safety Statements 26-36/37/39-45
RIDADR UN 3285 6.1/PG 3
WGK Germany 3
RTECS YW1050000
TSCA Yes
HazardClass 6.1
PackingGroup II
HS Code 28419000
MSDS Information
ProviderLanguage
ACROSEnglish
SigmaAldrichEnglish
ALFAEnglish
Sodium metavanadate Usage And Synthesis
Chemical PropertiesSodium vanadate, sodium orthovanadate, Na3VO4, white solid, soluble, formed by fusion of vanadium pentoxide and sodium carbonate. Used (1) in inks, (2) in photography, (3) in dyeing of furs, (4) in inoculation of plant life.
UsesSodium metavanadate is used as an analytical reagent and mordant. It is also found to be useful in the photography industry and the pharmaceutical industry. In addition to this, it is used in the making of vanadium alloy and vanadium catalyst.
UsesVanadium is a metallic element that occurs in six oxidation states and numerous inorganic compounds. Some of the more important compounds are vanadium pentoxide (V2O5), sodium metavanadate (NaVO3), sodium orthovanadate (Na3VO4), vanadyl sulfate (VOSO4), and ammonium vanadate (NH4VO3). Vanadium is used primarily as an alloying agent in steels and non-ferrous metals (ATSDR, 1990). Vanadium compounds are also used as catalysts and in chemical, ceramic or specialty applications.
UsesSodium metavanadate (SMV) is a vanadium salt that can be used as a corrosion inhibitor with good inhibition efficiency (98%) at 200 ppm. It can be used in the protection of carbon steel.
DefinitionChEBI: Sodium metavanadate is an inorganic sodium salt having metavanadate as the counterion. It contains a metavanadate.
Preparationsodium metavanadate synthesis: Dissolve vanadium pentoxide in sodium hydroxide solution, crystallized by concentration, that is, the finished product of sodium metavanadate.
V2O5+2NaOH→2NaVO3+H2O
General DescriptionColorless to yellow crystals or cream colored solid. Melting point 630°C.
Air & Water ReactionsSoluble in water.
Reactivity ProfileSodium metavanadate is a moderately strong oxidizing agent [Cotton and Wilkinson].
HazardToxic by ingestion.
Health HazardVanadium pentoxide and sodium metavanadate have a toxicity rating of 5, equivalent to a probable lethal oral dose in humans of 5-50 mg/kg (Gosselin et al., 1984). The elemental metallic form is considered to be non-toxic.
Stokinger et al. (1953) reported that a 10% solution of sodium metavanadate is a primary irritant to human skin. Saturated solutions of ammonium metavanadate (0.5%) and vanadium pentoxide (0.8% solution) did not irritate the skin. Sjoberg (1951) reported that several workers occupationally exposed to vanadium developed what appeared to be a contact dermatitis and that in one case, skin patch tests produced eczematous lesions indicative of an allergic reaction.
COMMENTS: The NOAEL is derived from a study in which rats were given 0, 5, 10 and 50 ppm sodium metavanadate, in drinking water for 3 months. Impaired kidney function was seen at 50 ppm, and 10 ppm was considered a NOAEL. The Uncertainty Factor of 100 is the product of a 10-fold uncertainty in extrapolating from laboratory animals to humans and a 10-fold uncertainty to protect sensitive individuals.
Fire HazardFlash point data of Sodium metavanadate are not available. Sodium metavanadate is probably nonflammable.
Flammability and ExplosibilityNonflammable
Safety ProfilePoison by ingestion, intraperitoneal, subcutaneous, and intravenous routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of Na2O and VOx. See also VANADIUM COMPOUNDS.
Sodium metavanadate Preparation Products And Raw materials
Raw materialsVanadium(V) oxide
Preparation ProductsVanadium(V) oxide–>Tris(2-chloroethyl) phosphate

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