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アルゴン

アルゴン 化学構造式
7440-37-1
CAS番号.
7440-37-1
化学名:
アルゴン
别名:
アルゴン;アルゴンガス;Arガス
英語化学名:
Argon
英語别名:
18Ar;Argon;Ar-36;Ar-38;Ar-40;argon(0);argongas;argon atom;Chebi:49475;argonliquid
CBNumber:
CB0330440
化学式:
Ar
分子量:
39.95
MOL File:
7440-37-1.mol

アルゴン 物理性質

融点 :
-189.2 °C(lit.)
沸点 :
-185.7 °C(lit.)
比重(密度) :
1.784(0℃)
蒸気密度:
1.38 (21 °C, vs air)
外見 :
colorless gas
水溶解度 :
33.6mL/1000g H2O (20°C) [KIR78]; Henry’s law constants, k×10?4: 3.974 (25.0°C), 5.359 (65.1°C), 5.342 (91.1°C), 3.812 (222.7°C), 2.541 (267.3°C), 1.870 (287.9°C) [POT78]
Merck :
13,788
安定性::
Stable. Inert.
CAS データベース:
7440-37-1(CAS DataBase Reference)
NISTの化学物質情報:
Argon(7440-37-1)
EPAの化学物質情報:
Argon (7440-37-1)
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)
Sフレーズ  38
RIDADR  UN 1006 2.2
WGK Germany  -
RTECS 番号 CF2300000
4.5-31
DOT Classification 2.2 (Nonflammable gas)
国連危険物分類  2.2
有毒物質データの 7440-37-1(Hazardous Substances Data)
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
H280 加圧ガス;熱すると爆発のおそれ 高圧ガス 高圧ガス
液化ガス
溶解ガス
警告 P410+P403
注意書き
P410+P403 日光から遮断し、換気の良い場所で保管するこ と。

アルゴン 価格

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

アルゴン MSDS


Argon

アルゴン 化学特性,用途語,生産方法

解説

アルゴン,Ar.原子番号18の元素.電子配置[Ne]3s23p6の周期表18族希ガス元素.原子量39.948(1).40Ar99.6003(1)%,38Ar0.0632%,36Ar0.3365% からなり単核種に近い.質量数30~53までの放射性核種が知られている.1894年,W. Ramsay(ラムゼー)とJ. Rayleighによって発見され,不活性なところから怠け者を意味するギリシア語αργοσをとって命名された.大気の9340体積 ppm を占める.火星の大気中にも1.6%Arが含まれる.液体空気の分留によって単体が得られる.精製は,分留の反復,アルカリ金属との加熱(窒素,酸素の除去),活性炭による分別吸着,分別蒸発,ガスクロマトグラフィーによって精製される.無色,無臭の気体.融点83.8 K(-189.3 ℃),沸点87.28 K(-185.87 ℃).臨界点150.86 K(-122.3 ℃).4.898 MPa(48.35 atm).13.41 mol L-1(0.5356 g mL-1).三重点87.78 K.液体の密度34.93 mol L-1(1.393 g mL-1)(沸点).蒸発熱6.516 kJ mol-1(沸点).第一イオン化エネルギー1520.4 kJ mol-1(15.760 eV).化学的には不活性である.ヒドロキノンと[C6H4(OH)2]3・0.67Ar,水と6H2O・Arの包接化合物をつくる.アーク溶接,チタン,半導体用ケイ素,ゲルマニウム結晶製造の際の不活性雰囲気,白熱電球,蛍光灯充填ガスとして用いられる.液体は高エネルギー物理学用検出器の媒質に使われる.

用途

アーク溶接時の不活性ガスシールド

説明

Argon belongs to the family of inert, rare gases of the atmosphere. It is plentiful compared to the other rare atmospheric gases; I million ft3 (28 300 m3) of dry air contains 9340 ft3 (264 m3 ) of argon. Argon is colorless, odorless, tasteless, and nontoxic. It is extremely inert and forms no known chemical compounds. It is slightly soluble in water.

化学的特性

With the symbol A, argon is a nonflammable gas; one of the elements in the inert gas category. It is colorless.

物理的性質

Argon is a colorless, odorless, tasteless, chemically inert noble gas that makes up about0.93% of the Earth’s atmosphere. It is the third most abundant gas in the atmosphere, meaningit is more common than carbon dioxide, helium, methane, and hydrogen.
Its melting point is –189.35°C, its boiling point is –185.85°C, and its density is0.0017837g/cm3.

同位体

There are a total of 24 isotopes of argon, three of which are stable. They areAr-36, which constitutes just 0.3365% of the natural amount of argon; Ar-38, which contributesjust 0.0632% to the amount of argon on Earth; and Ar-40, which, by far, constitutesthe most argon on Earth, 99.6003% of its natural abundance.

名前の由来

The name “argon” is derived from the Greek word argos, meaning “inactive.”

天然物の起源

Argon is the 56th most abundant element on Earth. It is the most abundant of all the noblegases found in the atmosphere. In fact, the only source of argon is the atmosphere, where it isfound at just under 1% of air by volume.
There are several methods of producing argon. The most common is by fractional distillationof liquid air. Argon is collected as a by-product of this large-scale commercial process.During fractional distillation, argon boils off at its own unique temperature. It is then collectedand purified by passing it through charcoal to filter out helium and other gases, producingsignificant amounts of argon.

特性

Although argon is considered chemically inert, at low temperatures it is possible to combineargon with other atoms to form very fragile compounds, which exist only at those verylow temperatures. For instance, it can combine with fluorine and hydrogen to form argonfluorohydride (HArF). It is only slightly soluble in water.

使用

Gas as shield in gas metal-arc welding, in metal processing; carrier in gas-liquid and gas-solid chromatography; gas filler for incandescent light bulbs. Gas in fluorescent tubes analogous to neon lights, but produces a blue-purplish light; in rectifier tubes; in thermometers above mercury; in lasers; wherever an inert atmosphere is desired and the much cheaper nitrogen cannot be used; in ionization chambers and particle counters; in mixtures with He and Ne in Geiger counters; in argon-oxygen-decarburizing process for stainless steel; in manufacture of semiconducting devices; in gas mixtures as the working fluid in plasma arc devices. Liquid as cryogen to produce low temperetures. The isotope 40Ar is always found in minerals contg potassium, since it is a product of 40K decay; measuring the amount of 40Ar and 40K can be used for determining the geologic age of minerals and meteors.

定義

An inert colorless odorless monatomic element of the rare-gas group. It forms 0.93% by volume of air. Argon is used to provide an inert atmosphere in electric and fluorescent lights, in welding, and in extracting titanium and silicon. The element forms no known compounds.
Symbol: Ar; m.p. –189.37°C; b.p. –185.86°C; d. 1.784 kg m-3 (0°C); p.n. 18; r.a.m. 39.95.

一般的な説明

A colorless odorless noncombustible gas. Heavier than air and can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire can cause Argon to rupture violently and rocket . If liquefied, contact of the very cold liquid with water may cause violent boiling. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Contacts with water in a closed container may cause dangerous pressure to build.

反応プロフィール

These substances undergo no chemical reactions under any known circumstances. They are nonflammable, noncombustible and nontoxic. They can asphyxiate.

危険性

Argon is nontoxic, but as an asphyxiant gas, it can smother by replacing oxygen in thelungs.

健康ハザード

Vapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground.

火災危険

Non-flammable gases. Containers may explode when heated. Ruptured cylinders may rocket.

材料の用途

Gaseous argon is noncorrosive and inert, and consequently may be contained in systems constructed of any common metals and designed to safely withstand the pressures involved. At the temperature of liquid argon, ordinary carbon steels and most alloy steels lose their ductility and are considered unsafe for liquid argon service. Satisfactory materials for use with liquid argon include austenitic stainless steel (for example, types 304 and 316), copper, Monel, brass, aluminum, and other nickel-chromium alloys.

安全性プロファイル

A simple asphyxlant gas. As an inert gas, it has no specific inherent dangerous properties. Gases of this type have no specific toxicity effect, but they act by excluding O2 from the lungs. The effect of simple asphyxiant gases is proportional to the extent to whch they dirmnish the amount (partial pressure) of O2 in the air that is breathed. The oxygen may be diminished to 75% of its normal percentage in air before appreciable symptoms develop, and t h s in turn requires the presence of a simple asphyxiant in a concentration of 33% in the mixture of air and gas. When the simple asphyxiant reaches a concentration of 50%, marked symptoms can be produced. A concentration of 75% is fatal in a matter of minutes. The first symptoms produced by simple asphyxiant gases such as argon are rapid respirations and air hunger. Mental alertness is diminished and muscular coordination is impaired. Later, judgment becomes faulty and all sensations are depressed. Emotional instability often results and fatigue occurs rapidly. As the asphyxia progresses, there may be nausea and vomiting, prostration, and loss of consciousness, and finally, convulsions, deep coma, and death.

職業ばく露

Argon is used in metal fabrication and steel making; as an inert gas shield in arc welding; as an inert atmosphere in electric lamps; as a blanketing agent in metals refining (especially titanium and zirconium).

貯蔵

Gaseous argon is commonly stored in high pressure cylinders, tubes, or tube trailers. Liquid argon is commonly stored at the consumer site in cryogenic liquid containers and specially designed vacuum-insulated cryogenic storage tanks.
All of the precautions necessary for the handling of any nonflammable gas or cryogenic liquid must be taken.
Liquid and gaseous systems should be designed and installed only under the direction of personnel thoroughly familiar with liquid and gaseous argon equipment and in compliance with state, provincial, and local requirements.

輸送方法

UN1006 Argon, compressed, Hazard Class: 2.2; Labels: 2.2-Nonflammable compressed gas. Cylinders must be transported in a secure upright position, in a wellventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.

純化方法

Argon is rendered oxygen-free by passage over reduced copper at 450o, or by bubbling through alkaline pyrogallol and H2SO4, then dried with CaSO4, Mg(ClO4)2, or Linde 5A molecular sieves. Other purification steps include passage through Ascarite (CARE: asbestos impregnated with sodium hydroxide), through finely divided uranium at about 800o and through a -78o cold trap. Alternatively the gas is passed over CuO pellets at 300o to remove hydrogen and hydrocarbons, over Ca chips at 600o to remove oxygen and, finally, over titanium chips at 700o to remove nitrogen. It has also been purified by freeze-pump-thaw cycles and by passage over sputtered sodium [Arnold & Smith J Chem Soc, Faraday Trans 2 77 861 1981]. Arsenic acid (arsenic pentoxide hydrate, arsenic V oxide hydrate, orthoarsenic acid) [12044-50-7] M 229.8 + xH2O, pK 1 2.26, pK 2 6.76, pK 3 11.29 (H3AsO4). The acid crystallises from concentrated solutions of boiling conc HNO3 as rhombic crystals. Dry it in a vacuum to give the hemihydrate (hygroscopic). Heating above 300o yields As2O5. [Thaler Z Anorg Allgem Chem 246 19 1941, Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 601 1963.]

廃棄物の処理

Vent to atmosphere. Return refillable compressed gas cylinders to supplier.

アルゴン 上流と下流の製品情報

原材料

準備製品


アルゴン 生産企業

Global( 68)Suppliers
名前 電話番号 電子メール 国籍 製品カタログ 優位度
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
info@tianfuchem.com China 22021 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
linda@hubeijusheng.com CHINA 28229 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 23035 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072
zzwenxi@126.com CHINA 13187 58
Shaanxi Dideu Medichem Co. Ltd
29-89586680 +8618192503167
1005@dideu.com China 9938 58
Henan Alfa Chemical Co., Ltd
+8618339805032
sales4@alfachem.cn China 12787 58
Mainchem Co., Ltd. +86-0592-6210733
sale@mainchem.com CHINA 32439 55
Chemwill Asia Co.,Ltd. 86-21-51086038
chemwill_asia@126.com CHINA 23975 58
PERIC Special Gases Co., Ltd. 0310-7182720-613 15620672519
zhaoqingwei@pericsg.com China 39 58
Shanghai Meishui Chemical Technology Co., Ltd 021-60549325 18616193163
mail@meishuichem.com China 4535 56

7440-37-1(アルゴン)キーワード:


  • 7440-37-1
  • argon atom
  • argon,compressed
  • ARGON (PURE GAS) 1X14L SCOTTY 14 99.995%
  • ARGON, PRESSURE TIN WITH 1 L
  • ARGON, 99.998+%
  • ARGON ULTRAPLUS
  • ARGON SPUTTERING
  • ARGON GIGAPLUS(TM)
  • ARGON UHP ELECTRONIC
  • Air separation plants
  • Argon
  • 18Ar
  • Chebi:49475
  • Argon 99.999%, Messer(R) CANGas
  • Argon for electric light bulbs
  • argon(0)
  • argon,highpurity
  • argon,refrigeratedliquid
  • argon,refrigeratedliquid(cryogenicliquid)
  • argongas
  • argonliquid
  • argonliquide
  • liquidargon
  • Argon gas-36Ar
  • Argon gas-38Ar
  • Argon ISO 9001:2015 REACH
  • High purity argon
  • Ar-36
  • Ar-38
  • Ar-40
  • アルゴン
  • アルゴンガス
  • Arガス
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