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

Odor

Odorless

Water Solubility 

Soluble in water.

Merck 

14,8700

Exposure limits

NIOSH: Ceiling 0.05 mg/m3

Stability:

Stable.

CAS DataBase Reference

13718-26-8(CAS DataBase Reference)

EPA Substance Registry System

Sodium 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

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

Sodium metavanadate Usage And Synthesis

Chemical Properties

Sodium 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.

Uses

Sodium 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.

Uses

Vanadium 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.

Uses

Sodium 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.

Definition

ChEBI: Sodium metavanadate is an inorganic sodium salt having metavanadate as the counterion. It contains a metavanadate.

Preparation

sodium 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 Description

Colorless to yellow crystals or cream colored solid. Melting point 630°C.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Sodium metavanadate is a moderately strong oxidizing agent [Cotton and Wilkinson].

Hazard

Toxic by ingestion.

Health Hazard

Vanadium 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 Hazard

Flash point data of Sodium metavanadate are not available. Sodium metavanadate is probably nonflammable.

Flammability and Explosibility

Non flammable

Safety Profile

Poison 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(13718-26-8)Related Product Information

• Vanadium(V) oxide
• BARIUM METAPHOSPHATE
• Ammonium metavanadate
• Sodium molybdate
• Sulfur trioxide
• SODIUM BISMUTHATE
• Lanthanum(III) chloride
• Hexaammonium molybdate
• Magnesium chloride
• VANADIUM(III) CHLORIDE
• Metaphosphoric acid
• Magnesium titanium oxide
• LITHIUM METABORATE
• Aluminum metaphosphate
• SODIUM METASILICATE PENTAHYDRATE
• AMMONIUM (META)TUNGSTATE HYDRATE
• Sodium orthovanadate
• Sodium metavanadate