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CAS NUMBER: 13769-43-2
EC NUMBER: 237-388-8
MOLECULAR FORMULA: KVO3
MOLECULAR WEIGHT: 138.04
Potassium metavanadate appears as a colorless to pale green colored crystalline solid. Denser than water.
Potassium metavanadate atom has a radius of 134 pm and a Van der Waals radius of 179 pm.
Potassium metavanadate was discovered by Andres Manuel del Rio in 1801 and first isolated by Nils Gabriel Sefström in 1830.
In Potassium metavanadates elemental form, vanadium has a bluish-silver appearance.
Potassium metavanadate is a hard, ductile transition metal that is primarily used as a steel additive and in alloys such as Titanium-6AL-4V, which is composed of titanium, aluminum, and vanadium and is the most common titanium alloy commercially produced.
Potassium metavanadate is found in fossil fuel deposits and 65 different minerals.
Potassium metavanadate is not found free in nature; however, once isolated it forms an oxide layer that stabilizes the free metal against further oxidation.
Potassium metavanadate was named after the word "Vanadis" meaning goddess of beauty in Scandinavian mythology.
A colorless to pale green colored crystalline solid.
Denser than water.
Used to make dyes, inks and laundry compounds.
Colorless to light green solid.
Colorless odorless crystalline powder.
Potassium metavanadate is usually available in various concentration.
Special packaging information is available on demand.
Potassium metavanadate is stored in original packing and under conditions.
The potassium metavanadate samples were digested by hydrochloric acid and diluted with water to a constant volume, then the inductively coupled plasma atomic emission spectrometry (ICP-OES) was used to directly determine the content of 10 to 45% matrix vanadium.
The matrix effects, spectral interference, background noise and other interference factors in the high concentration of Potassium metavanadates coexistence system were all examined in the paper.
The results showed that although the coexisting alkali metal potassium significantly increased the ICP flame, the 1g/L Potassium metavanadate did not produce peaks in the scanning window of analysis line which substantially coincide with the reagent blank signal line, i.e., the 28% (or 0.28g/L) potassium contained in the potassium metavanadate did not interfere with the determination.
Therefore, only the standard solution of vanadium was used to draw a calibration curve without the need of potassium matrix matching.
In order to obtain a wide linear range and improve the detection precision and the accuracy of the matrix element vanadium, the sample dilution ratio and ICP spectrometer detection parameters were optimized, and the suitable sensitivity spectral lines and their detection integral and background correction regional were selected, the detection signal intensity of the high concentration vanadium is effectively regulated moderate, the detection range is covered from 10 to 45%, which fully meet the need for determination of vanadium in the potassium metavanadate (qualified products containing 37% vanadium).
Potassium metavanadates does not react with oxygen in the air at room temperatures, nor does it mix in water.
Potassium metavanadates are special as they act like a metal in some cases, and as a non-metal in additional cases.
Used as a steel additive, Potassium metavanadates produce one of the toughest alloys for piston rods, armour plate, crankshafts, and axles.
Potassium metavanadate is extensively used as a catalyst, in ceramics and in producing superconducting magnets.
Potassium metavanadate is used in the process of pigment production for plastics, enamels, ceramics.
Potassium metavanadate is used for industrial gas desulphuration and H2S adsorption and elimination.
In glass industry as Simcheong agent.
In dye industry as intermediates.
In perfume industry as additives.
The pharmaceutical industry is also used as laxatives, treatment of soluble barium salt poisoning.
Potassium metavanadate is commonly used in agriculture as potash, potassium content of 50%, In Taiwan, commonly known as "white Gary."
In addition, Potassium metavanadate is also used in the glass industry, dyes, perfumes, pharmaceuticals etc.
Potassium metavanadate can be obtained by reacting potassium chloride with vanadium(V) oxide .
Potassium metavanadate is an odorless, colorless crystalline powder.
Potassium metavanadate has a density of 2.84 g cm −3 and melts at 520 °C.
Potassium metavanadates monohydrate has an orthorhombic crystal structure with the space group Pnam (space group no. 62, position 6).
Potassium metavanadate has a crystal structure with the space group Pbcm (space group no. 57).
In this case, Potassium metavanadates are linked to form infinite chains.
Potassium metavanadate used in the oxidation of SO2 to SO3 gradually loses its catalytic activity, inter alia, due to impurities introduced together with gases containing SO2.
Potassium metavanadate is an irreversible process, and thus the catalyst must be partly or wholly replaced from time to time.
Potassium metavanadate operating time is dependent on technological process parameters, as well as its mechanical strength.
The yearly amount of waste catalyst is limited by the size of H2SO4 production and its stability which is estimated at 10 years.
Potassium metavanadates that have been subjected to mainly thermal and chemical deactivation are withdrawn from the production cycle and stored near plants at waste heaps or in concrete silos.
A spent Potassium metavanadate contains a range of pollutant, Potassium metavanadate is a heterogeneous material.
Potassium metavanadates derived from sulfur installations, in contrast to catalysts derived from metallurgical installations, have no micropollutants such as copper, mercury, cadmium and lead.
Potassium metavanadate is the inorganic compound with the formula NH4VO3.
Potassium metavanadate is a white solid, although samples are often yellow owing to impurities of V2O5.
Potassium metavanadate is an important intermediate in the purification of vanadium.
Vanadium is often purified from aqueous extracts of slags and ore by selective precipitation of ammonium metavanadate.
Potassium metavanadates can behave as structural mimics of phosphates, and in this way, they exhibit biological activity.Ammonium Metavanadate
Potassium metavanadate is used to prepare Mandelin reagent, a qualitative test for alkaloids.
Potassium metavanadate appears as a white crystalline powder.
Slightly soluble in water and denser than water.
Decomposes at 410°F.
Used as a dryer for paints and inks, and for dyes.
Potassium metavanadates are more stable than either the ortho- or pyro-vanadates.
Solutions of the latter yield metavanadates on being evaporated or by treatment with carbon dioxide.
The alkali Potassium metavanadates are prepared directly by dissolving vanadium pentoxide in the calculated quantity of alkali hydroxide.
The Potassium metavanadates of other metals are prepared by fusing vanadium pentoxide with the oxide or carbonate of the metal in calculated quantity, or by the action of a soluble salt of the metal on a neutral solution of alkali metavanadate.
The alkali and alkaline earth metavanadates are white or pale yellow; metavanadates of the heavy metals are deep yellow, brown, or red.
Most of the Potassium metavanadates are soluble in water; vanadates of the heavy metals are almost insoluble in water or dilute acetic acid.
According to Bleecker, Potassium metavanadates of the metals seem to be soluble in water to some extent, but become insoluble in the presence of small quantities of the precipitating agent.
They show a tendency to precipitate in the colloidal state; especially is this the case with the vanadates of iron, copper, zinc and aluminium.
Potassium metavanadates of mercury, lead, copper and iron fuse at about 600° C., but the vanadates of aluminium, calcium, zinc and tungsten do not fuse at much higher temperatures.
The fused Potassium metavanadates of iron and copper are extremely hard and are good conductors of electricity.
Potassium metavanadate is obtained in the laboratory by dissolving vanadium pentoxide in excess of ammonium hydroxide and concentrating, or, instead of concentrating, alcohol may be added, in which the salt is insoluble.
Recrystallisation from dilute Potassium metavanadate gives a pure product.
Ammonium metavanadate is also insoluble in a saturated solution of ammonium chloride, and it is quantitatively precipitated by the addition of an excess of solid ammonium chloride to a neutral solution of sodium metavanadate or pyrovanadate.
Potassium metavanadate is a white powder which can be obtained in colourless, granular crystals, isomorphous with potassium metavanadate.
Potassium metavanadates density is 2.326. One hundred parts of water dissolve 5.18 parts at 15° C. and 10.4 parts at 32° C.
Acid solutions of Potassium metavanadates on being treated with lead salts give rise to yellow basic Potassium metavanadates the composition of which varies with the conditions.
The precipitation of normal Potassium metavanadate is, therefore, difficult.
Potassium metavanadates contain all the vanadic acid originally present in solution, and precipitation of vanadates with lead salts has, therefore, been employed for the quantitative estimation of vanadium.
Potassium Metavanadate, KVO3, is obtained as white or colourless crystals by dissolving vanadium pentoxide in hot, strong caustic potash solution.
By varying the concentrations several hydrates have also been prepared: 2KVO3.3H2O; KVO3.2H2O; 2KVO3.5H2O; KVO3.3H2O. On being heated, all these hydrates lose their water and leave a white, nacreous mass of the anhydrous salt, which melts at 495° C.
Potassium metavanadates were prepared by Rammelsberg: KVO3.H2O and KVO3.7H2O.
Potassium metavanadate is widely used in catalyzer, siccative, mordant, medical treatment photograph, plant inoculating and inhibitor etc.
Prepare potassium metavanadate at present and mainly contain three kinds of methods, one is in water, add ammonium meta-vanadate and potassium hydroxide, ebuillition of heated removing ammonia, and make final ph 8 ~ 10, evaporative crystallization obtains potassium metavanadate solid; One method dissolves ammonium poly-vanadate with potassium hydroxide, filters post crystallization and obtain potassium metavanadate solid; Another kind method obtains calcium vanadate precipitation toward containing adding appropriate calcium chloride in vanadium leachate, calcium vanadate joined in certain density potassium bicarbonate solution and obtain calcium carbonate and potassium metavanadate, after filtration, filtrate condensing crystal is obtained potassium metavanadate solid.
First method and second method prepare the common method of potassium metavanadate, and add alkali heating in its technique and remove ammonia 5 hours about consuming time, technique length consuming time, consumes energy slightly high.
The third method technical process is relatively long, and cost is higher, and can leave over a small amount of calcium ion in potassium metavanadate, affects the catalytic performance of potassium metavanadate.
Potassium metavanadate prepared by the present invention, according to the potassium metavanadate price about 7.2 ten thousand/ton of 99% purity current on market, 99% purity Vanadium Pentoxide in FLAKES 7.5 ten thousand/ton rough calculation, sells potassium metavanadate and comparatively sells the Vanadium Pentoxide in FLAKES profit growth of equal vanadium metering more than 35%.And prepare potassium metavanadate process from the intermediate product ammonium meta-vanadate of vanadium and substantially do not produce waste, environmental pollution is very little; Produce the sale kind that potassium metavanadate can expand vanadium product, expand the range of application of vanadium, increase the total sales volume of vanadium.
Potassium Metavanadate is an inorganic compound that has the chemical formula of KMnO_xH_y.
Potassium metavanadate is a colorless solid material that can be seen as odorless white to cream-colored crystals or powder at room temperature.
Potassium metavanadate is mainly used as raw material in different industries such as vulcanization accelerator, ceramic industry, and glass.
USES:
Employed as corrosion inhibitors and anti-scaling agents.
Used widely in chemical fertilizer industries, glass and ceramic industries, pharmaceutical industries.
Also used in the process of pigment production for plastics, enamels, ceramics.
Used for industrial gas desulphuration and H2S adsorption and elimination.
Used to make dyes, inks, and laundry compounds.
Used as a corrosion inhibitor in fertilizer and catalyst production and as an intermediate in glass manufacture.
Potassium metavanadate is used as raw material for catalysts, as well as raw material for agriculture and pigments.
Potassium metavanadate is used as a corrosion inhibitor and anti-scaling agent.
Potassium metavanadate is also often used in the chemical fertilizer industry, glass and ceramics industry, pharmaceutical industry, in the production of pigments for plastics, paints, ceramics.
In addition, Potassium metavanadate is used for the desulfurization of industrial gases and for the adsorption and elimination.
Potassium metavanadate is used as a catalyst in the synthesis of organic products.
Potassium Metavanadate serves as an additive to expand the scope of catalysts that are based on expensive precious metals such as platinum, palladium, and rhodium by making them less sensitive towards oxidation.
Potassium metavanadate reduces the cost of synthetic chemical reactions and also enhances the efficiency of such processes.
Potassium Metavanadate is used as a mordant in dyeing.
Potassium metavanadate can be used as an oxidizing agent for organic synthesis such as oxidation of thiols to disulfides and sulfonyl chlorides to sulfonates etc., by acting as a vanadium(V) source via the vanadium(V) oxide intermediate.
Potassium Metavanadate is used in analytical chemistry as an oxidation-reduction titration reagent for iodine number determinations, determination of dissolved oxygen, and alkalinity.
-dyes
-inks
-laundry compounds
APPLICATIONS:
-Employed as corrosion inhibitors and anti-scaling agents.
-Used widely in chemical fertilizer industries, glass and ceramic industries, pharmaceutical industries.
-Also used in the process of pigment production for plastics, enamels, ceramics.
-Used for industrial gas desulphuration and H2S adsorption and elimination.
PROPERTIES:
-Quality Level: 100
-assay: 98%
-form: powder
-reaction suitability: reagent type: catalyst, core: vanadium
-mp: 520 °C (lit.)
-density: 2.84 g/mL at 25 °C (lit.)
-SMILES string: [K+].[O-][V](=O)=O
-InChI: 1S/K.3O.V/q+1;;;-1;
-Inchi Key: BQFYGYJPBUKISI-UHFFFAOYSA-N
CHEMICAL PROPERTIES:
-Formula: KVO3
-Formula Weight: 138.04
-Form: -200 Mesh Powder
-Melting point: 520°
-Storage & Sensitivity: Ambient temperatures
-Solubility: Soluble in water
SPECIFICATIONS:
-Compound Formula: VO3K
-Molecular Weight: 138.04
-Appearance: White to light yellow powder
-Melting Point: 520 °C
-Density: 2.84 g/cm3
-Exact Mass: 137.89241
-Monoisotopic Mass: 137.89241
CHEMICAL PROPERTIES:
colorless crystal(s); -200mesh with 99.9% purity; there are also K3VO4, 14293-78-8, and K4V2O7, 14638-93-8 [CRC10] [CER91]
CHEMICAL IDENTIFIERS:
-Linear Formula: KVO3
-MDL Number: MFCD00050038
-EC No.: 237-388-8
-Pubchem CID: 4571336
-IUPAC Name: potassium; oxido(dioxo)vanadium
-SMILES: [K+].[O-] [V](=O)=O
-InchI Identifier: InChI=1S/K.3O. V/q+1;;;-1;
-InchI Key: BQFYGYJPBUKISI-UHFFFAOYSA-N
CATEGORY:
-Metals
-Inorganic Compounds
APPEARANCE:
Potassium metavanadate is a whitish powder.
FEATURES:
-Free flowing powder
-Easily soluble
-Pure crystalline solid
CHARACTERISTICS:
-Appearance: Off White to White Powder.
-Type: Chemical Reagent
-CAS Number: 13769-43-2
-Density: 2.84 g/mL at 25 A C(lit.)
-Water Solubility: Soluble in water.
-Synonyms: Potassium vanadate (meta)
-Assay: 99% Min.
-Form: Powder
-Melting point: 520A
-EINECS: 237-388-8
-PH Value: 6
-Molecular Weight: 206.81 g/mol
-Molar Mass: 138.04 g/mol
-Usage: Industrial, Commercial, Laboratory
STORAGE:
stored in original packing and under conditions
Store in its original form or under several layers of varnish at average humidity and room temperature.
Do not store in matchboxes or cotton wool and do not heat.
SYNONYM:
Potassium vanadate
13769-43-2
potassium;oxido(dioxo)vanadium
UNII-0S0516D6VI
0S0516D6VI
Potassium m-vanadate
Potassium trioxovanadate
Vanadate (VO31-), potassium
Potassium vanadium trioxide
EINECS 237-388-8
UN2864
K.O3V
Vanadic acid,
potassium salt
Vanadate (VO31-), potassium (1:1)
Potassium vanadate(V) (KVO3) (6CI,7CI)
EC 237-388-8
Potassium metavanadate (KVO3)
DTXSID50893969
8794AF
MFCD00050038
Potassium metavanadate [UN2864]
Q15627936
