Vanadium Produkt Beschreibung
- Englisch Name:Vanadium
V 004600;VANADIUM;V 005130;V 004850;V 004500;V 005110;V 005120;V 005105;VANADIUM;rod,99.7%
Vanadium physikalisch-chemischer Eigenschaften
- Schmelzpunkt: :1890 °C(lit.)
- Siedepunkt: :3380 °C(lit.)
- Dichte :6.11 g/mL at 25 °C(lit.)
- Dampfdruck :8 mm Hg ( 20 °C)
- storage temp. :Storage temperature: no restrictions.
- Löslichkeit :H2O: soluble
- Aggregatzustand :turnings
- Farbe :Silver-gray
- Wichte :6.11
- Widerstand (resistivity) :24.8-26.0 μΩ-cm, 20°C
- Wasserlöslichkeit :insoluble H2O; reacts with hot H2SO4, HF, HNO3, aqua regia [MER06]
- Merck :13,9984
- Stabilität: :Stable. Incompatible with strong acids, strong oxidizing agents.
- InChIKey :LEONUFNNVUYDNQ-UHFFFAOYSA-N
- CAS Datenbank :7440-62-2(CAS DataBase Reference)
Vanadium Chemische Eigenschaften,Einsatz,Produktion Methoden
R36/38:Reizt die Augen und die Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S7:Behälter dicht geschlossen halten.
- Chemische Eigenschaften Vanadium is a light-gray or silver-white, ductile solid, lustrous powder, or fused hard lump.
- Chemische Eigenschaften Silvery-white ductile solid. Insoluble in water; resistant to corrosion, but soluble in nitric, hydrofluoric, and concentrated sulfuric acids; attacked by alkali, forming water-soluble vanadates. Acts as either a metal or a nonmetal and forms a variety of complex compounds.
- Chemische Eigenschaften Vanadium is a soft, ductile, silver-gray metal. It has good resistance to corrosion by alkalis, sulfuric and hydrochloric acid, and salt water. Vanadium metal, sheet, strip, foil, bar, wire, and tubing are used in industries. It is used in high-temperature service, in the production of rust-resistant, high-speed tools, and is an important carbide stabilizer in making steels. In fact, most vanadium is used as an additive to improve steels. Vanadium steel is especially strong and hard, with improved resistance to shock. Vanadium pentoxide (V2O5) is perhaps vanadium’s most useful compound. It is used as a mordant—a material that permanently fi xes dyes to fabrics. Vanadium pentoxide is used as a catalyst in chemical reactions and in the manufacture of ceramics. Vanadium pentoxide can also be mixed with gallium to form superconductive magnets.
- Physikalische Eigenschaften Vanadium is a silvery whitish-gray metal that is somewhat heavier than aluminum, butlighter than iron. It is ductile and can be worked into various shapes. It is like other transitionmetals in the way that some electrons from the next-to-outermost shell can bond with otherelements. Vanadium forms many complicated compounds as a result of variable valences. Thisattribute is responsible for the four oxidation states of its ions that enable it to combine withmost nonmetals and to at times even act as a nonmetal. Vanadium’s melting point is 1890°C,its boiling point is 3380°C, and its density is 6.11 g/cm3.
- Isotopes There are 27 isotopes of vanadium. Only vanadium-51 is stable and makes up99.75% of the total vanadium on Earth. The other 0.25% of the vanadium found onEarth is from the radioisotope vanadium-50, which has such a lon+17years that it is considered stable. The other radioactive isotopes have half-lives rangingfrom 150 nanoseconds to one year.
- Origin of Name Named after the Scandinavian mythological goddess Vanadis because of the many colors exhibited by vanadium’s compounds.
- Occurrence Vanadium is not found in its pure state. Small amounts of vanadium can be found inphosphate rocks and some iron ores. Most of it is recovered from two minerals: vanadinite,which is a compound of lead and chlorine plus some vanadium oxide, and carnotite, a mineral containing uranium, potassium, and an oxide of vanadium. Because of its four oxidationstates and its ability to act as both a metal and a nonmetal, vanadium is known to chemicallycombine with over 55 different elements.Vanadium’s principal ores are roscoelite, patronite, vanadinite, and carnotite, which arefound in the states of Idaho, Montana, Arkansas, and Arizona as well as in Mexico and Peru.It is also a by-product from the production of phosphate ores.
- Charakteristisch Vanadium is an excellent alloy metal with iron that produces hard, strong, corrosion-resistant steel that resists most acids and alkali. It is even more resistant to seawater corrosion thanis stainless steel. Vanadium is difficult to prepare in a pure form in large amounts. Impureforms seem to work as well as a very pure form of the metal when used as an alloy. Whenworked as a metal, it must be heated in an inert atmosphere because it will readily oxidize.
- History Vanadium was first discovered by del Rio in 1801. Unfortunately, a French chemist incorrectly declared that del Rio’s new element was only impure chromium; del Rio thought himself to be mistaken and accepted the French chemist’s statement. The element was rediscovered in 1830 by Sefstrom, who named the element in honor of the Scandinavian goddess Vanadis because of its beautiful multicolored compounds. It was isolated in nearly pure form by Roscoe, in 1867, who reduced the chloride with hydrogen. Vanadium of 99.3 to 99.8% purity was not produced until 1927. Vanadium is found in about 65 different minerals among which carnotite, roscoelite, vanadinite, and patronite are important sources of the metal. Vanadium is also found in phosphate rock and certain iron ores, and is present in some crude oils in the form of organic complexes. It is also found in small percentages in meteorites. Commercial production from petroleum ash holds promise as an important source of the element. China, South Africa, and Russia supply much of the world’s vanadium ores. High-purity ductile vanadium can be obtained by reduction of vanadium trichloride with magnesium or with magnesium–sodium mixtures. Much of the vanadium metal being produced is now made by calcium reduction of V2O5 in a pressure vessel, an adaptation of a process developed by McKechnie and Seybolt. Natural vanadium is a mixture of two isotopes, 50V (0.25%) and 51V (99.75%). 50V is slightly radioactive, having a long half-life. Twenty other unstable isotopes are recognized. Pure vanadium is a bright white metal, and is soft and ductile. It has good corrosion resistance to alkalis, sulfuric and hydrochloric acid, and salt water, but the metal oxidizes readily above 660°C. The metal has good structural strength and a low-fission neutron cross section, making it useful in nuclear applications. Vanadium is used in producing rust-resistant, spring, and high-speed tool steels. It is an important carbide stabilizer in making steels. About 80% of the vanadium now produced is used as ferrovanadium or as a steel additive. Vanadium foil is used as a bonding agent in cladding titanium to steel. Vanadium pentoxide is used in ceramics and as a catalyst. It is also used in producing a superconductive magnet with a field of 175,000 gauss. Vanadium and its compounds are toxic and should be handled with care. Ductile vanadium is commercially available. Vanadium metal (99.7%) costs about $3/g.
- Verwenden Alloying agent in manufacture of rust-resistant vanadium steel.
- Verwenden The major use of vanadium is as an alloying metal to make a strong and corrosion-resistant form of steel that is well suited for structures such as nuclear reactors. It does not absorbneutrons or become “stretched” by heat and stress, as does normal stainless steel, thus makingvanadium ideal for the construction of nuclear reactors.Some of its compounds, particularly the oxides, are used in chemical industries as catalyststo speed up organic chemical reactions. The yellow-brown vanadium pentoxide (V2O5) is usedas a catalyst to facilitate the production of sulfuric acid by the contact process. Vanadium pentoxide is also used as a photographic developer, to dye textiles, and in the production of artificialrubber. When combined with glass, it acts as a filter against ultraviolet rays from sunlight.
- Definition A silvery transition element occurring in complex ores in small quantities. It is used in alloy steels. Vanadium forms compounds with oxidation states +5, +4, +3, and +2. It forms colored ions. Symbol: V; m.p. 1890°C; b.p. 3380°C; r.d. 6.1 (20°C); p.n. 23; r.a.m. 50.94.
- Definition Symbol V. A silverywhite metallic transition element; a.n. 23; r.a.m. 50.94; r.d. 5.96; m.p. 1890°C; b.p. 3380°C. It occurs in a number of complex ores, including vanadinite (Pb5Cl(VO4)3) and carnotite (K2(ClO2)2(VO4)2). The pure metal can be obtained by reducing the oxide with calcium. The element is used in a large number of alloy steels. Chemically, it reacts with nonmetals at high temperatures but is not affected by hydrochloric acid or alkalis. It forms a range of complexes with oxidation states from +2 to +5. Vanadium was discovered in 1801 by Andrés del Rio (1764–1849), who allowed himself to be persuaded that what he had discovered was an impure form of chromium. The element was rediscovered and named by Nils Sefström (1787–1854) in 1880.
- Air & Water Reaktionen Not oxidized by air and not appreciably affected by moisture at ordinary temperatures. Some hydrogen gas may be created however this would proceed slowly under ambient conditions. Insoluble in water.
- Reaktivität anzeigen VANADIUM is a reducing agent. Finely divided form favors rapid or explosive reactions with oxidizing agents such as air or oxygen. Reacts exothermically with compounds having active hydrogen atoms (such as acids and water) to form flammable hydrogen gas and caustic products. The reactions are much less vigorous than the similar reactions of alkali metals. Can catalyze polymerization reactions in several classes of organic compounds; these polymerizations sometimes proceed rapidly or even explosively. Vanadium is used as a catalyst in the production of synthetic rubber and sulfuric acid.
Vanadium powder, dust, and most of its oxide compounds are explosive when exposedto heat and air. They are also toxic when inhaled. Vanadium chloride compounds are strongirritants to the skin and poisonous when ingested.
Many of its compounds must be stored in a dry, oxygen-free atmosphere or in containersof inert gas. Protective clothing and goggles should be worn when handling vanadium, as wellas with most of the other transition elements.
- Health Hazard Exposures to high levels of vanadium cause harmful health effects. The major effects from breathing high levels of vanadium are on the lungs, throat, and eyes. Workers who breathe vanadium for short and long periods show lung irritation, coughing, wheezing, chest pain, runny nose, and sore throat. Prolonged period of exposures to respirable dusts and vanadium fume have caused potential symptoms of toxicity among occupational workers. The symptoms of poisoning include, but are not limited to, irritation of the eyes and throat, green tongue, metallic taste, sore throat, cough, drowsiness, wheezing, bronchitis, abdominal cramps, nausea, vomiting, diarrhea, respiratory distress, pulmonary edema, bronchial damage, epistaxis (bloody nose), eczema, conjunctivitis, headache, dry mouth, dizziness, nervousness, insomnia, and tremor. It is not classifi able as a human carcinogen. Vanadium is a natural component of fuel oil, and workers have developed vanadium poisoning during cleaning operations on oil-fi red furnaces.
Vanadium (V) is a silvery-white, metallic, transition
element of Group 5 of the Periodic Table and
exhibits a range of valencies from +2 to +5. The ores
containing vanadium include vanadite and carnotite.
The pure metal, formed by the reduction of vanadium
oxide with calcium, is generally used as an alloying
element for steel and iron. Several vanadium compounds
are used as oxidation catalysts. They are also used as
coloring agents in the ceramic industry.
Vanadium comes under the category of beneficial elements which are non-essential but beneficial to plant growth. It is a very useful nutrient for the green alga Scenedesmus, but the exact amount of vanadium needed for the growth of higher plants is yet to be established.
Vanadium may replace molybdenum to some extent in nitrogen fixation by micro-organisms such as Azotobacter and Rhizobium. An increase in growth due to vanadium is seen in asparagus, rice, lettuce, barley and corn. It has also been speculated that vanadium may function in biological oxidation-reduction reactions.
Vanadium stimulates growth and nitrogenase activity in Anabaena variabilis in the absence of molybdenum. Low concentrations of vanadium are beneficial for the optimal growth of micro-organisms and higher plants. Generally, the concentration of vanadium in plants is about 1 ppm.
- Industrielle Verwendung Vanadium is a member of the d-block metals and belongs to group 5 of the periodic table of elements. Vanadium can be found in the earth s crust in numerous minerals and is isolated from ores mostly as a by-product. Its main application is in the steel industry, where it is used as an alloy in combination with iron. Vanadium pentaoxide is also being used as a catalyst for the production of sulfuric acid. The metal vanadium has very similar properties to titanium. Therefore, it is not surprising that its metallocene, vanadium dichloride, was also subjected to research as a potential anticancer agent. Vanadium is an essential trace metal in the human body, but still very little is known about its biological function. Vanadium is mainly found in its ionic state bound to proteins.
- Sicherheitsprofil An inhalation hazard. Poison by subcutaneous route. Questionable carcinogen with experimental tumorigenic data. Flammable in dust form from heat, flame, or sparks. Violent reaction with BrF3, Cl2, lithium, nitryl fluoride, oxidants. When heated to decomposition it emits toxic fumes of VOx. See also VANADIUM COMPOUNDS.
- mögliche Exposition Vanadium is used as a catalyst in the production of synthetic rubber and sulfuric acid. Most of the vanadium produced is used in ferrovanadium and of this the majority is used in high speed and other alloy steels with only small amounts in tool or structural steels. It is usually combined with chromium, nickel, manganese, boron, and tungsten in steel alloys.
- Veterinary Drugs and Treatments Vanadium supplementation may be useful in the adjunctive treatment of diabetes mellitus, particularly in cats. There is controversy whether or not this treatment is beneficial.
- Versand/Shipping UN3285 Vanadium compound, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. This number includes vanadium fume or dust.
- läuterung methode Clean the metal by rapid exposure consecutively to HNO3, HCl, HF, de-ionised water and reagent grade acetone, then dry it in a vacuum desiccator. [Brauer in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II pp 1252-1255 1965.]
- Inkompatibilitäten Dust may form explosive mixture with air. Dust, fume, and powders are a strong reducing agent; incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, bromine trifluoride, lithium, nitryl fluoride, chlorine trifluoride.
Vanadium Upstream-Materialien And Downstream Produkte
- Firmenname：Henan DaKen Chemical CO.,LTD.
- Edge Rate：58
- Firmenname：Henan Tianfu Chemical Co.,Ltd.
- Edge Rate：55
- Firmenname：Mainchem Co., Ltd.
- Edge Rate：55
- Firmenname：career henan chemical co
- Edge Rate：58
- Firmenname：Chemwill Asia Co.,Ltd.
- Edge Rate：58
- Firmenname：Hubei Jusheng Technology Co.,Ltd.
- Edge Rate：58
- Firmenname：Chongqing Chemdad Co., Ltd
- Edge Rate：58
- Firmenname：Rush Metal
- Edge Rate：58
- Firmenname：J & K SCIENTIFIC LTD.
- Telefon：400-666-7788 +86-10-82848833
- Edge Rate：76
- Firmenname：Meryer (Shanghai) Chemical Technology Co., Ltd.
- Telefon：+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
- Fax：+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing)
- Edge Rate：62
7440-62-2, Vanadium Verwandte Suche:
- Vanadiumphosphid Vanadiumpentafluorid Divanadiumtrioxid Vanadiumnitrid Oxobis(1-phenylbutan-1,3-dionato-O,O')vanadium Vanadiumdisilicid Oxobis(pentan-2,4-dionato-O,O')vanadium Vanadiumpentoxid Vanadiumdioxid Vanadiumoxytrichlorid Ammoniumvanadat Vanadiumdiselenid Vanadiumoxid Trifluorooxovanadium Tris(pentan-2,4-dionato-O,O')vanadium Naphthensuren, Vanadyl Komplexe
- Vanadium rod, 12.7mm (0.5 in.) dia.
- Vanadium slug, 3.175mm (0.125 in.) dia. x 3.175mm (0.125 in.) length
- Vanadium wire, 1.0mm (0.04 in.) dia., Stress relieved
- Vanadium foil, 0.075mm (0.003 in.) thick
- Vanadium wire, 0.127mm (0.005 in.) dia.
- Vanadium wire, 0.5mm (0.02 in.) dia.
- VANADIUM 99.9%
- VANADIUM FOIL: 99.5%, 2N5
- VANADIUM: 99.7%, GRANULATE
- VANADIUM: 99.7%, POWDER, -45 MICRON
- VANADIUM SLUGS: 99.9% 3N
- VANADIUM POWDER: 99.5%, 2N5
- VANADIUM ROD: 99.5%, 2N5
- VANADIUM, POWDER, - 45UM, 99.5%
- Vanadium, Granules 20 Mesh
- Vanadium plate, 3.2mm (0.13in) thick, annealed, 99.5% (metals basis)
- VWRbrand Stirring Bars, Micro, 3mm dia,10mm length
- VWRbrand Stirring Bars, Spinbar, 3/8 dia, 1 1/2 length
- VWRbrand Stirring Bars, Spinbar, 1/8 dia, 1/2 length
- VWRbrand Stirring Bars, Spinbar, 3/8 dia, 1 length
- VANADIUM POWDER 99+ 10 G
- VANADIUM STANDARD SOLUTION 500 ML
- VANADIUM STANDARD SOLUTION 100 ML
- VANADIUM ICP STANDARD TRACEABLE TO SRM F
- VANADIUM STANDARD 1000 MG V (VOSO4 IN 8.
- VanadiuM rod, 1.27cM (0.5in) dia x 10cM (3.9in) length, 99% (Metals basis)
- VanadiuM solution
- VanadiuM foil, thickness 0.127 MM, 99.7% trace Metals basis
- V 004600
- Vanadium powder
- Vanadium foil
- Vanadium rod
- Vanadium, foil, 0.5mm thick, 99.7% metals basis
- VANADIUM FOIL 1.0MM THICK 99.7%
- VANADIUM, ROD, 6.2MM DIAM., 99.7%
- VANADIUM, TURNINGS, 99.7%
- Vanadium, foil, 0.25mm thick, 99.7% metals basis
- VANADIUM FOIL 0.025MM THICK 99.7%
- VANADIUM FOIL 0.05MM THICK 99.7%
- VANADIUM, GRANULE, 2-5MM, 99+%
- VANADIUM, FOIL, 0.127MM THICK, 99.7%
- VANADIUM SLUG, 3.175MM (0.125IN) DIA X 3.175MM (0.125IN) LEN
- VANADIUM ROD, 12.7MM (0.5IN) DIA, 99.5% (METALS BASIS)
- VANADIUM SLUG, 6.35MM (0.25IN) DIA X 6.35MM (0.25IN) LENGTH,
- VANADIUM SLUG, 6.35MM (0.25IN) DIA X 12.7MM (0.50IN) LENGTH,
- VANADIUM ROD, 6.35MM (0.25IN) DIA, 99.5% (METALS BASIS)
- VANADIUM GRANULES, -20 MESH 99.5% (METALS BASIS)
- VANADIUM GRANULES, 1-3MM (0.04-0.12IN), VACUUM DEPOSITION GR
- VANADIUM TURNINGS, 2.5CM (1.0IN) & DOWN, 99.7% (METALS BASIS