13718-26-8 Usage
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
Different sources of media describe the Uses of 13718-26-8 differently. You can refer to the following data:
1. 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.
2. 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.
3. 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
Nonflammable
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.
Check Digit Verification of cas no
The CAS Registry Mumber 13718-26-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,1 and 8 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13718-26:
(7*1)+(6*3)+(5*7)+(4*1)+(3*8)+(2*2)+(1*6)=98
98 % 10 = 8
So 13718-26-8 is a valid CAS Registry Number.
InChI:InChI=1/Na.3O.V/q+1;;;;-1/rNa.O3V/c;1-4(2)3/q+1;-1
13718-26-8Relevant articles and documents
Sodium-vanadium bronze Na9V14O35: An electrode material for na-ion batteries
Abakumov, Artem M.,Akmaev, Alexey S.,Gorbunov, Mikhail V.,Kirsanova, Maria A.,Mikhailova, Daria
, (2021/12/29)
Na9V14O35 (η-NaxV2O5) has been synthesized via solid-state reaction in an evacuated sealed silica ampoule and tested as electroactive material for Na-ion batteries. According to powder X-ray diffraction, electron diffraction and atomic resolution scanning transmission electron microscopy, Na9V14O35 adopts a monoclinic structure consisting of layers of corner-and edge-sharing VO5 tetragonal pyramids and VO4 tetrahedra with Na cations positioned between the layers, and can be considered as sodium vanadium(IV,V) oxovanadate Na9V104.1+O19 (V5+O4)4. Behavior of Na9V14O35 as a positive and negative electrode in Na half-cells was investigated by galvanostatic cycling against metallic Na, synchrotron powder X-ray diffraction and electron energy loss spectroscopy. Being charged to 4.6 V vs. Na+/Na, almost 3 Na can be extracted per Na9V14O35 formula, resulting in electrochemical capacity of ~60 mAh g?1. Upon discharge below 1 V, Na9V14O35 uptakes sodium up to Na:V = 1:1 ratio that is accompanied by drastic elongation of the separation between the layers of the VO4 tetrahedra and VO5 tetragonal pyramids and volume increase of about 31%. Below 0.25 V, the ordered layered Na9V14O35 structure transforms into a rock-salt type disordered structure and ultimately into amorphous products of a conversion reaction at 0.1 V. The discharge capacity of 490 mAh g?1 delivered at first cycle due to the conversion reaction fades with the number of charge-discharge cycles.
Synthesis, Characterization, and Photocatalytic Activities of BiVO4 by Carbon Adsorption Hydrothermal Method
Niu,Guo
, p. 1661 - 1665 (2020/08/19)
A new idea of prepared method for BiVO4 nano-powders hydrothermal synthesis process was developed to avert the existent shortcomings of hydrothermal method. The thermal stability, phase structure, light absorption property, and morphology of the catalyst prepared were characterized by thermogravimetric analyzer (TG), X-ray diffraction (XRD), ultraviolet visible spectrophotometer (UV/Vis), and transmission electron microscopy (TEM), respectively. Using methyl orange (MO) as the target degradation material and a 500-W dysprosium lamp as the visible light source to investigate photocatalytic performance of BiVO4. We successfully prepared BiVO4 powders with small particle size, less agglomeration and uniform distribution by carbon adsorption hydrothermal method, and the absorption wavelength of light was red-shifted, these all rendered the absorption capacity of visible light region enhancing with 94 % high photocatalytic degradation rate of methyl orange at 60 min. And the possible mechanism was also discussed in this study.
Stability of Polar Structure in Filling-Controlled Giant Tetragonal Perovskite Oxide PbVO3
Yamamoto, Hajime,Ogata, Takahiro,Sakai, Yuki,Azuma, Masaki
, p. 2755 - 2760 (2019/02/19)
The crystal structure and stability of a giant tetragonal phase in electron-doped Pb1-xBixVO3 (x = 0.1, 0.2, and 0.3) and hole-doped Pb1-xNaxVO3 (x = 0.1, 0.2, and 0.3) were studied. Electron doping effectively destabilized the tetragonal structure. The c/a ratio, spontaneous polarization, and tetragonal-to-cubic phase transition pressure systematically decreased with increasing Bi3+ substitution. In contrast, hole doping hardly affected the tetragonal distortion and structural stability. We showed that electron doping is an effective way to control the stability of the tetragonal phase of PbVO3 with a 3d1 electronic configuration.
