noun

definition

A chemical element (symbol V) with atomic number 23; it is a transition metal, used in the production of special steels.

definition

A single atom of this element.

Examples of vanadium in a Sentence

The distillate is freed from vanadium by digestion with sodium amalgam.

Chemically related to vanadium are the two elements tantalum and columbium or niobium.

Vanadium, molybdenum and titanium may be expected soon to play an important part in the constitution of steel.

But the improvement may be due wholly to the considerable chromium content of these socalled vanadium steels.

The other metals reported in the official returns are lead, cobalt and vanadium, of which only small quantities are produced.

Roscoelite is a mica in which the aluminium is largely replaced by vanadium (V203, 30%); it occurs as brownish-green scaly aggregates, intimately associated with gold in California, Colorado and Western Australia.

Gin, L'Electricien, 1903, 2 5, p. 5); and by the electrolysis of vanadium trioxide when heated in an evacuated glass tube (W.

Moissan (Comptes rendus, 1896, 122, p. 1297) obtained a vanadium containing from Io to 16% of carbon by fusing vanadic anhydride with carbon in the electric furnace.

For other methods of obtaining vanadium and its compounds, see Cowper Cowles, Engin.

Vanadium is a light-coloured metal of specific gravity 5.5.

Vanadium may be detected by converting it into the pentoxide, which on passing sulphuretted hydrogen through its acid solution becomes reduced to the dioxide, the solution at the same time becoming lavender blue in colour; or if zinc be used as a reducing agent, the solution becomes at first green and ultimately blue.

Many salts of oxy-acids of vanadium are known, but of the more common oxy-acids, metavanadic acid, HV03, and pyrovanadic acid, H 4 V 2 0 7, alone appear to have been isolated.

Of the salts of these acids, those of the orthoand pyro-acids are the least stable, the orthovanadates being obtained on fusion of vanadium pentoxide with an alkaline carbonate.

Ammonium metavanadate is obtained when the hydrated vanadium pentoxide is dissolved in excess of ammonia and the solution concentrated.

Socket is manufactured from chrome vanadium steel hardened tempered and chrome vanadium steel hardened tempered and chrome plated.

People with bipolar disorder should avoid supplements containing vanadium until more is known.

It's unlikely that we need vanadium for good health.

By attaching chrome vanadium flexible rods, in 5 meter lengths, distances of up to 260 meters can be achieved.

You could eventually get back to the element vanadium which would have an oxidation state of zero.

In its chemical relationships tantalum is associated with vanadium, columbium and didymium in a sub-group of the periodic classification.

Chem., 1905, 45, p. 35 2); by electrolysis in a bath of fused fluorspar containing a steel cathode and an anode composed of carbon and vanadium pentoxide (M.

It 's unlikely that we need vanadium for good health.

In this case, Wachs chose to use titanium compounds to tailor the electron density of clusters of vanadium oxide on a silica support.

Produces a very hard layer of vanadium carbide, typically 10?

There is n't enough information to know what the effects might be of taking vanadium supplements.

Vanadium deficiency may be associated with infant mortality.

A diet low in vanadium (a mineral found in meats and other foods) and high in vitamin C may be helpful in reducing depression.

Within these limits are to be found most of the minerals known - gold, silver, quicksilver, copper, lead, zinc, iron, manganese, wolfram, bismuth, thorium, vanadium; mica, coal, &c. On or near the coast are coal, salt, sulphur, borax, nitrates and petroleum.

Antimony, bismuth, selenium, tellurium, chromic iron ore, tin, nickel, cobalt, vanadium, titanium, molybdenum, uranium and tantalum are produced in the United States in small amounts, but such production in several cases has amounted to only slight discoveries, and in general they are of little importance in the market.

Vanadium in small quantities, 0.15 or 0.20%, is said to improve steel greatly, especially in increasing its resistance to shock and to often-repeated stress.

The principal exports are gold, silver, copper (bars, regulus and ores), cobalt and its ores, lead and its ores, vanadium ores, manganese, coal, nitrate of soda, borate of lime, iodine, sulphur, wheat and guano.

Important mines of gold and silver, considerable deposits of wolframite, valuable ores of molybdenum and vanadium, and quarries of onyx marble, are also worked.

In small quantities, vanadium is found widely distributed, the chief sources being vanadite, mottramite, descloizite, roscoelite, dechenite and pucherite, whilst it is also found as a constituent of various clays, iron-ores and pitchblendes.

Vanadium salts may be obtained from mottramite by digesting the mineral with concentrated hydrochloric acid, the liquid being run off and the residue well washed; the acid liquid and the washings are then evaporated with ammonium chloride, when ammonium metavanadate separates.

This is recrystallized and roasted to vanadium pentoxide, which is then suspended in water into which ammonia is passed, when ammonium metavanadate is again formed and may be purified by recrystallization.

The pure metal may be obtained by reducing vanadium dichloride in hydrogen, the operation being exceedingly difficult (for details, see Roscoe's original papers).

Vanadium dichloride, VC12, is a green crystalline solid obtained when the tetrachloride is reduced with hydrogen at a dull red heat.

The tetrachloride, VC14, is formed by the direct union of vanadium and chlorine or by the action of sulphur chloride on vanadium pentoxide (Matignon, Comptes rendus, 1904, 138, p. 631).

Moissan (Coniptes rendus, 1896, 122, p. 1297) by heating vanadium pentoxide and carbon for a few minutes in the electric furnace.

For vanadium steels, see Iron And Steel Manufacture.

Chromic acid converts it into quinone, while chlorates, in the presence of certain metallic salts (especially of vanadium), give aniline black.

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