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タンタル

タンタル 化学構造式
7440-25-7
CAS番号.
7440-25-7
化学名:
タンタル
别名:
タンタル;タンタル181;タンタル(キューブ),5N5;タンタル,粉末;タンタル,粒状;タンタル(キューブ), 5N5;タンタル(粉末);タンタル(スポンジ) 8~12メッシュ;タンタル(粉末) 325メッシュ;タンタル, ホイル;タンタル, 粉末;タンタル foil (99.95%);タンタル rod (99.95%);タンタル wire (99.95%)
英語化学名:
TANTALUM
英語别名:
Tantal;TANTALUM;TA000090;TA000590;TA007320;TA007950;TA007055;TA007450;TA007100;TA000080
CBNumber:
CB3367656
化学式:
Ta
分子量:
180.95
MOL File:
7440-25-7.mol

タンタル 物理性質

融点 :
2996 °C(lit.)
沸点 :
5425 °C(lit.)
比重(密度) :
16.69 g/cm 3 (lit.)
蒸気圧:
<0.01 mm Hg ( 537.2 °C)
外見 :
wire
色:
Gray to silver
比重:
16.6
電気抵抗率 (resistivity):
13.5 μΩ-cm, 20°C
水溶解度 :
very resistant to attack by acids except HF, resistant to alkali solutions [KIR83]
Merck :
13,9143
安定性::
Stable. Powder is very flamable.
InChIKey:
GUVRBAGPIYLISA-UHFFFAOYSA-N
CAS データベース:
7440-25-7(CAS DataBase Reference)
安全性情報
  • リスクと安全性に関する声明
  • 危険有害性情報のコード(GHS)
主な危険性  F,Xi,Xn,C
Rフレーズ  11-36/37/38-20/21/22-40-34-36/38
Sフレーズ  16-26-33-36/37/39-36-45-27-36/37
RIDADR  UN 3089 4.1/PG 2
WGK Germany  -
RTECS 番号 WW5505000
自然発火温度 572 °F
TSCA  Yes
国連危険物分類  4.1
容器等級  II
安衛法 57-2
絵表示(GHS)
注意喚起語 Warning
危険有害性情報
コード 危険有害性情報 危険有害性クラス 区分 注意喚起語 シンボル P コード
H228 可燃性固体 可燃性固体 1
2
危険
警告
P210, P240,P241, P280, P370+P378
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
H319 強い眼刺激 眼に対する重篤な損傷性/眼刺激 性 2A 警告 P264, P280, P305+P351+P338,P337+P313P
H335 呼吸器への刺激のおそれ 特定標的臓器毒性、単回暴露; 気道刺激性 3 警告
注意書き
P210 熱/火花/裸火/高温のもののような着火源から遠ざ けること。-禁煙。
P261 粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P305+P351+P338 眼に入った場合:水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。
P405 施錠して保管すること。

タンタル 価格 もっと(91)

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入
富士フイルム和光純薬株式会社(wako) W01ALF000335 タンタル, ホイル
Tantalum foil, 0.025mm (0.001in) thick, 99.997% (metals basis)
7440-25-7 25×25mm ¥27100 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01ALF000335 タンタル, ホイル
Tantalum foil, 0.025mm (0.001in) thick, 99.997% (metals basis)
7440-25-7 25×100mm ¥95700 2018-12-26 購入
関東化学株式会社(KANTO) 41177-33 タンタル(キューブ), 5N5 99.9995%(Im.S.)
Tantalum, cube, 5N5 99.9995%(Im.S.)
7440-25-7 25g ¥23000 2018-12-13 購入
関東化学株式会社(KANTO) 41177-53 タンタル(キューブ), 5N5 99.9995%(Im.S.)
Tantalum, cube, 5N5 99.9995%(Im.S.)
7440-25-7 5g ¥8500 2018-12-13 購入
Sigma-Aldrich Japan 262846 タンタル powder, ?325?mesh, 99.9% trace metals basis
Tantalum powder, ?325?mesh, 99.9% trace metals basis
7440-25-7 25g ¥18200 2018-12-25 購入

タンタル 化学特性,用途語,生産方法

外観

灰黒色の粉末

溶解性

水に不溶。酸化性の酸、ふっ化水素酸、融解アルカリに反応し溶ける。ふっ化水素酸に溶け、水にほとんど溶けない。

用途

電解コンデンサー材料、耐熱耐食材料 (化学工業日報社)

化学的特性

Tantalum is a refractory metal in Group V-B of the periodic table. The pure metal is ductile, steel-blue to gray solid or black, odorless powder.

物理的性質

Tantalum has properties similar to niobium and vanadium above it in group 5. It is a veryhard and heavy metal with a bluish color when in its rough state, but if polished, it has a silveryshine. It is ductile, meaning it can be drawn into fine wires, and also malleable, meaningit can be hammered and worked into shapes. Thin strips and wires of tantalum will ignite inair if exposed to a flame.
Tantalum’s melting point is 2,996°C, which is almost as high as tungsten and rhenium. Itboiling point is 5,425°C, and its density is 19.3 g/cm3.

同位体

There are 49 isotopes of tantalum. Only the isotope Ta-181 is stable andaccounts for 99.988% of the total mass of the element on Earth. Just 0.012% of the element’s mass is contributed by Ta-180, which has a half-life of 1.2×10+15 years and isthus considered naturally stable. The remaining 47 isotopes are all artificially producedin nuclear reactions or particle accelerators and have half-lives ranging from a few microsecondsto few days to about two years.

名前の由来

Tantalum was named after Tantalus, who was the father of Niobe, the queen of Thebes, a city in Greek mythology. (Note: The element tantalum was originally confused with the element nobelium.)

天然物の起源

Tantalum is the 51st most abundant element found on Earth. Although it is found in afree state, it is usually mixed with other minerals and is obtained by heating tantalum potassiumfluoride or by the electrolysis of melted salts of tantalum. Tantalum is mainly obtainedfrom the following ores and minerals: columbite [(Fe, Mn, Mg)(Nb, Ta)2O6]; tantalite [(Fe,Mn)(Ta, Nb)2O6]; and euxenite [(Y, Ca, Er, La, Ce, U, Th)(Nb, Ta, Ti)2O6]. Tantalum’s oresare mined in South America, Thailand, Malaysia, Africa, Spain, and Canada. The UnitedStates has a few small native deposits but imports most of the tantalum it uses.
Since tantalum and niobium are so similar chemically, a solvent process must be employedto separate them from the common ores. They are dissolved in a solvent, resulting in 98% pure niobium oxide being extracted during this part of the process. This is followed by 99.5%pure tantalum oxide being extracted in a second solvent process.

特性

Tantalum is almost as chemically inert at room temperatures (it has the ability to resistchemical attacks, including hydrofluoric acid) as are platinum and gold. It is often substitutedfor the more expensive metal platinum, and its inertness makes it suitable for constructingdental and surgical instruments and artificial joints in the human body.

来歴

Discovered in 1802 by Ekeberg, but many chemists thought niobium and tantalum were identical elements until Rose, in 1844, and Marignac, in 1866, showed that niobic and tantalic acids were two different acids. The early investigators only isolated the impure metal. The first relatively pure ductile tantalum was produced by von Bolton in 1903. Tantalum occurs principally in the mineral columbite-tantalite (Fe, Mn)(Nb, Ta)2O6. Tantalum ores are found in Australia, Brazil, Rwanda, Zimbabwe, Congo- Kinshasa, Nigeria, and Canada. Separation of tantalum from niobium requires several complicated steps. Several methods are used to commercially produce the element, including electrolysis of molten potassium fluorotantalate, reduction of potassium fluorotantalate with sodium, or reacting tantalum carbide with tantalum oxide. Thirty-four isotopes and isomers of tantalum are known to exist. Natural tantalum contains two isotopes, one of which is radioactive with a very long half-life. Tantalum is a gray, heavy, and very hard metal. When pure, it is ductile and can be drawn into fine wire, which is used as a filament for evaporating metals such as aluminum. Tantalum is almost completely immune to chemical attack at temperatures below 150°C, and is attacked only by hydrofluoric acid, acidic solutions containing the fluoride ion, and free sulfur trioxide. Alkalis attack it only slowly. At high temperatures, tantalum becomes much more reactive. The element has a melting point exceeded only by tungsten and rhenium. Tantalum is used to make a variety of alloys with desirable properties such as high melting point, high strength, good ductility, etc. Scientists at Los Alamos have produced a tantalum carbide graphite composite material that is said to be one of the hardest materials ever made. The compound has a melting point of 3738°C. Tantalum has good “gettering” ability at high temperatures, and tantalum oxide films are stable and have good rectifying and dielectric properties. Tantalum is used to make electrolytic capacitors and vacuum furnace parts, which account for about 60% of its use. The metal is also widely used to fabricate chemical process equipment, nuclear reactors, and aircraft and missile parts. Tantalum is completely immune to body liquids and is a nonirritating metal. It has, therefore, found wide use in making surgical appliances. Tantalum oxide is used to make special glass with a high index of refraction for camera lenses. The metal has many other uses. The price of (99.9%) tantalum is about $2/g.

使用

A mixture of tantalum carbide (TaC) and graphite is a very hard material and is used toform the cutting edge of machine tools. Tantalum pentoxide (Ta2O5) is dielectric, making ituseful to make capacitors in the electronics industry. When mixed with high-quality glass, itimparts a high index of refraction, making it ideal for camera and other types of lenses.Because of its hardness and noncorrosiveness, tantalum is used to make dental and surgicaltools and implants and artificial joints, pins, and screws. The metal does not interactwith human tissues and fluids. Since tantalum can be drawn into thin wires, it is used inthe electronics industry, to make smoke detectors, as a getter in vacuum tubes to absorbresidual gases, and as filaments in incandescent lamps. It has many other uses in the electronicsindustry.
The use of tantalum to make miniaturized electrolytic capacitors that store electric chargesin devices such as cell phones and computers is becoming increasingly popular. Powderedtantalum is used in the process of sintering to form malleable bars and plates as well as specialelectrodes for the electronics industry.
As a result of their hardness, noncorrosiveness, and ductility, tantalum alloys are used tofabricate parts for nuclear reactors, missiles, and airplanes, and in industries where metal withthese qualities is required.

定義

A silvery transition element. It is strong, highly resistant to corrosion, and is easily worked. Tantalum is used in turbine blades and cutting tools and in surgical and dental work. Symbol: Ta; m.p. 2996°C; b.p. 5425 ± 100°C; r.d. 16.654 (20°C); p.n. 73; r.a.m. 180.9479.

定義

tantalum: Symbol Ta. A heavy bluegrey metallic transition element; a.n. 73; r.a.m. 180.948; r.d. 16.63; m.p. 2996°C; b.p. 5427°C. It is found with niobium in the ore columbite– tantalite (Fe,Mn)(Ta,Nb)2O6. It is extracted by dissolving in hydrofluoric acid, separating the tantalum and niobium fluorides to give K2TaF7, and reduction of this with sodium. The element contains the stable isotope tantalum–181 and the long-lived radioactive isotope tantalum–180 (0.012%; half-life >107 years). There are several other short-lived isotopes. The element is used in certain alloys and in electronic components. Tantalum parts are also used in surgery because of the unreactive nature of the metal (e.g. in pins to join bones). Chemically, the metal forms a passive oxide layer in air. It forms complexes in the +2, +3, +4, and +5 oxidation states. Tantalum was identified in 1802 by Anders Ekeberg (1767–1813) and Ürst isolated in 1820 by Berzelius.

使用

In pen points; analytical weights; apparatus and instruments for chemical, surgical, and dental use instead of platinum, in tantalum capacitors (a type of electrolytic condenser, trademarked "Tantalytic").

定義

Element of atomic number 73 in group VB of the periodic table, aw 180.9479, valences of 2, 3, 5; no stable isotopes.

一般的な説明

Tantalum dust is a black odorless powder. Mp: 2996°C; bp: approx. 5250°C. Density: 16.65 g cm-3. Insoluble in water. Tantalum oxide dust is a white, microcrystalline powder Mp: 1800°C. Density: 7.6 g cm-3. Insoluble in water. The mixture is listed as a toxic inhalation hazard by OHSA.

危険性

Dust or powder may be flammable. Toxic by inhalation.

危険性

The dust and powder of tantalum are explosive. Several tantalum compounds are toxic ifinhaled or ingested, but the metal itself is nonpoisonous.

安全性プロファイル

An inhalation hazard. Some industrial skin injuries from tantalum have been reported. Systemic industrial poisoning, however, is apparently unknown. Questionable carcinogen with experimental tumorigenic data. The dry powder iptes spontaneously in air. Incompatible with bromine trifluoride, fluorine, lead chromate. See also specific tantalum compounds.

応急処置

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

輸送方法

UN3089 Metal powders, flammable, n.o.s., Hazard Class: 4.1; Labels: 4.1-Flammable solid.

不和合性

A flammable solid; the dry powder can ignite spontaneously in air. Incompatible with lead chromate. A strong reducing agent; incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, bromine trifluoride, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Tantalum metal is attacked by hydrogen fluoride, fused alkalis, fuming sulfuric acid.

廃棄物の処理

Sanitary landfill if necessary; recover if possible because of economic value. Technology exists for tantalum recovery from spent catalysts, for example.

主な性質

  1. 単体タンタルは光沢のある灰色の色調を持つ金属である
  2. 金属タンタルはほとんどの試薬に侵されず、極めて酸化し難い金属である
  3. タンタルはかなり硬いが、延性に富む。しかし高温で容易に酸化して燃焼する為、高温加工及び溶接を大気中で行う事が出来ない
  4. 金属タンタルは融点がタングステンに次いで高い
  5. タンタルは窒素、酸素、水素などの気体を吸収する性質を持つ
  6. 人体への反応がほとんど無いので、医療器具に用いられる

主な用途

  1. 高温度ヒーター(真空熱処理炉、熱交換器具)
  2. タンタルコンデンサー(携帯電話、ビデオ、デジカメ、パソコン)
  3. 光学ガラス添加剤(携帯電話、ビデオ、デジカメ、パソコン)
  4. 超硬工具の成分(超硬バイト、ドリル)
  5. スパッタターゲット(磁気ディスク)

タンタル 上流と下流の製品情報

原材料

準備製品


タンタル 生産企業

Global( 119)Suppliers
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Mainchem Co., Ltd.
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Hubei Jusheng Technology Co.,Ltd.
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Hunan Chuangrun Mineral Resources Co., Ltd. 18573119278;15098981388
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J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
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3B Pharmachem (Wuhan) International Co.,Ltd. 86-21-50328103 * 801、802、803、804 Mobile:18930552037
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Shanghai Hanhong Scientific Co.,Ltd. 021-54306202,021-54308259
+86-21-54291107 info@hanhonggroup.com China 43389 64
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 sale@xiyashiji.com China 9726 57

7440-25-7(タンタル)キーワード:


  • 7440-25-7
  • TANTALUM TUBING
  • TANTALUM STANDARD
  • TANTALUM SINGLE ELEMENT PLASMA STANDARD
  • TANTALUM SINGLE ELEMENT STANDARD
  • TANTALUM
  • TANTALUM ICP STANDARD
  • Tantalum rod (99.95%)
  • Tantalum wire (99.95%)
  • Tantalum wire (99.95%) 1mm dia. (ca. 13g/m)
  • TantalumfoilNmmthickcagxmm
  • TantalumpowderNppmNbmesh
  • TantalumrodNmmdiacagcm
  • Tantalumwiremmdia
  • TantalumwireNmmdiacagm
  • Tantalum, foil, 0.025mm thick, 99.9+% metals basis
  • TANTALUM, WIRE, 0.127MM DIAM., 99.9+%
  • TANTALUM, FOIL, 0.05MM THICK, 99.9+%
  • Tantalum, wire, 1.0mm diam., 99.9+% metals basis
  • TANTALUM WIRE 0.25MM DIAM. 99.9+%
  • TANTALUM POWDER
  • TANTALUM, POWDER, -325 MESH, 99.9%
  • TANTALUM, FOIL, 0.5MM THICK, 99.9+%
  • TANTALUM, POWDER, 99.99+%
  • TANTALUM, WIRE, 2.0MM DIAM., 99.9+%
  • TANTALUM, ROD, 3.2MM DIAM., 99.9+%
  • TANTALUM, FOIL, 0.25MM THICK, 99.9+%
  • Tantalum, wire, 0.5mm diam., 99.9+% metals basis
  • TANTALUM, NANOPOWDER, 99+%
  • TANTALUM, ROD, 6.35MM DIAM., 99.9+%
  • TANTALUM, FOIL, 1.0MM THICK, 99.9+%
  • タンタル
  • タンタル181
  • タンタル(キューブ),5N5
  • タンタル,粉末
  • タンタル,粒状
  • タンタル(キューブ), 5N5
  • タンタル(粉末)
  • タンタル(スポンジ) 8~12メッシュ
  • タンタル(粉末) 325メッシュ
  • タンタル, ホイル
  • タンタル, 粉末
  • タンタル foil (99.95%)
  • タンタル rod (99.95%)
  • タンタル wire (99.95%)
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