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金 化学構造式
7440-57-5
CAS番号.
7440-57-5
化学名:
别名:
C.I.ピグメントメタル3;金;金粉末;金,板状;金,粒状;金,線状;金及びその化合物;(PET/金)ラミネート;コロイド性金;金(粉末);金 (箔) 〈0.002×109×109MM〉;金粉;金, 粒状;金, ロッド;金, FOIL;金, 塊状;金箔;金コロイド 粒子径5NM;金コロイド 粒子径15NM;金ナノロッド
英語化学名:
GOLD
英語别名:
GC;Au;GOLD;Glod;AURIC;E 175;GOLDN;Au NP;AUROUS;nano AU
CBNumber:
CB9169816
化学式:
Au
分子量:
196.97
MOL File:
7440-57-5.mol

金 物理性質

融点 :
1063 °C(lit.)
沸点 :
2808 °C(lit.)
比重(密度) :
19.3 g/mL at 25 °C(lit.)
屈折率 :
n20/589.3 1.523
闪点 :
4 °C
貯蔵温度 :
2-8°C
溶解性:
H2O: soluble
外見 :
wire
色:
purple
比重:
19.3
PH:
6-8
酸塩基指示薬変色域(pH):
6 - 8
電気抵抗率 (resistivity):
2.05 μΩ-cm, 0°C
水溶解度 :
Soluble in hot sulfuric acid and aqua regia. Insoluble in water and acid.
Sensitive :
Light Sensitive
Merck :
13,4529
安定性::
Stable. May react with halogens, strong oxidizing agents, ammonia, hydrogen peroxide. Reaction with ammonia or hydrogen peroxide may form explosive materials.
CAS データベース:
7440-57-5(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  Xi,Xn,F,C
Rフレーズ  36/38-43-67-65-63-48/20-38-11-34-23-52/53
Sフレーズ  26-36/37/39-45-62-36/37-61-23
RIDADR  UN 1789 8/PG 3
WGK Germany  3
RTECS 番号 MD5420000
TSCA  Yes
HSコード  3822 00 00
国連危険物分類  6.1
容器等級  II
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
H333 吸入すると有害のおそれ 急性毒性、吸入 5 P304+P312
注意書き
P273 環境への放出を避けること。

金 価格 もっと(130)

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) W01ALF011355 金, 粒状
Gold shot, 0.8-6mm (0.03-0.2in), Premion?, 99.9995% (metals basis)
7440-57-5 1g ¥66800 2018-12-26 購入
富士フイルム和光純薬株式会社(wako) W01ALF011355 金, 粒状
Gold shot, 0.8-6mm (0.03-0.2in), Premion?, 99.9995% (metals basis)
7440-57-5 5g ¥300800 2018-12-26 購入
Sigma-Aldrich Japan 255734 金 powder, <850?μm, ≥99.99% trace metals basis
Gold powder, <850?μm, ≥99.99% trace metals basis
7440-57-5 1g ¥32500 2018-12-25 購入
Sigma-Aldrich Japan 265772 金 powder, <45?μm, 99.99% trace metals basis
Gold powder, <45?μm, 99.99% trace metals basis
7440-57-5 500mg ¥20700 2018-12-25 購入
ナカライテスク株式会社(Nacalai) 37530-04 金標準液(1000ppm)
Gold Standard Solution
100ML ¥3510 2018-12-15 購入

金 化学特性,用途語,生産方法

定義

本品は、ポリエチレンテレフタレート(PET(*))に金を蒸着して積層した薄膜片である。参照表示名称:PET

主な性質

  • 貴金属に属し、黄金色の輝きと稀少性が特徴(装飾品や財宝として魅力)
  • 金の延展性はあらゆる金属のなかで最も大きい
  • 自然界では、他の元素と化合し難く、化学的な安定性のため、金は単体として存在(美しい輝きを長いあいだ保つことができる)
  • 金は一般に、酸やアルカリなどの溶液とは反応しない。(ただ、塩素を発生する王水には溶ける)
  • 金は銀、銅に次いで電気伝導性が高い
  • 表面に酸化膜が無いので、圧接加工が容易

化粧品の成分用途

表面改質剤、滑沢剤、抗菌剤、抗黴剤、皮膚コンディショニング剤、着色剤

主な用途

  • 電子電気: 通信機器(リレーコネクター、ICセラミックパッケージ、リードフレーム、プリント基板、パソコン、携帯電話、ロボット、電装品)
  • 歯科医療(義歯)
  • 宝飾品(指輪、ネックレス)
  • 美術、工芸品(仏像、宗教用具、金杯)
  • メダル(記念メダル)
  • その他(金箔、陶磁器)
  • 私有保有(金地金)

化学的特性

yellow metal

物理的性質

Gold is a soft, malleable, ductile, dense metal with a distinctive yellow color. It is almost aheavy as lead, and both can be cut with a knife. One ounce of gold can be beaten and poundedinto a thin sheet that is only a few molecules thick and that will cover over 300 square feetof surface. Although gold is chemically nonreactive, it will react with chlorine and cyanidesolutions and can be dissolved in aqua regia. Its melting point is 1,064.4°C, its boiling pointis 2,808°C, and its density is 19.3 g/cm3 (as compared to lead’s density of 11.35 g/cm3).

同位体

There are a total of 54 isotopes of gold, only one of which is stable: Au-197,which accounts for the element’s total natural existence on Earth. The remaining 53 isotopesare radioactive, are artificially produced in nuclear reactors or particle accelerators,and have half-lives ranging from a few microseconds to a few seconds to a few hours toa few days.

名前の由来

The name “gold” is Anglo-Saxon as well as from the Sanskrit word javal. The symbol Au is from the Latin word aurum, which means “shining dawn.”

天然物の起源

Gold is the 72nd most abundant element and is widely spread around the world, but it is not evenly distributed through the surface of the Earth. It is usually found in a few concentrated regions, sometimes in pure flake and nugget metallic forms. Most of it exists in conjunction with silver ore, quartz (SiO2), and the ores of tellurium, zinc, and copper. About one milligram of gold exists in every ton of seawater (this is about 10 parts of gold per trillion parts of seawater, which amounts to a total of about 79 million tons of gold in solution). No economical method of extracting gold from seawater has been developed to recover this treasury of the sea.
Free metallic gold is found in veins of rocks and in ores of other metals. Alluvial gold (placer deposits) is found in the sand and in the gravel at the bottom of streams where it has been deposited as a result of the movement of water over eons. Most gold is recovered from quartz veins called loads and from ores that are crushed.

特性

Gold is not only pleasing to look at but also pleasing to touch, which made it a desirablemetal for human decoration in prehistoric days. It is still the preferred metal for jewelry makingtoday.
Gold is classed as a heavy, noble metal located just below copper and silver in group 11 ofthe periodic table. Gold is a good conductor of electricity as well as an excellent heat reflectorof infrared radiation, which makes it an efficient thin coating on glass in skyscrapers to reflectthe heat of sunlight.
The purity of gold is measured in “carats” (one carat is equal to one part in twenty-four). Thepurest gold is rated at 24 carats, but it is much too soft to be used for jewelry. Good jewelry ismade from 18-carat gold that is 18 parts gold and six parts alloy metal. Thus, an 18-carat goldring is about 75% pure gold and contains about 25% of another metal, such as nickel or copper,to make it harder and more durable. Other alloy metals mixed with gold are silver, platinum, andpalladium—all used to increase gold’s strength and reduce its cost. Some less expensive jewelrycontains 14 or 10 carats of gold (14/24 or 10/24) as well as some other alloy metals.

来歴

Known and highly valued from earliest times, gold is found in nature as the free metal and in tellurides; it is very widely distributed and is almost always associated with quartz or pyrite. It occurs in veins and alluvial deposits, and is often separated from rocks and other minerals by sluicing and panning operations. About 25% of the world’s gold output comes from South Africa, and about two thirds of the total U.S. production now comes from South Dakota and Nevada. The metal is recovered from its ores by cyaniding, amalgamating, and smelting processes. Refining is also frequently done by electrolysis. Gold occurs in sea water to the extent of 0.1 to 2 mg/ton, depending on the location where the sample is taken. As yet, no method has been found for recovering gold from sea water profitably. It is estimated that all the gold in the world, so far refined, could be placed in a single cube 60 ft on a side. Of all the elements, gold in its pure state is undoubtedly the most beautiful. It is metallic, having a yellow color when in a mass, but when finely divided it may be black, ruby, or purple. The Purple of Cassius is a delicate test for auric gold. It is the most malleable and ductile metal; 1 oz. of gold can be beaten out to 300 ft2. It is a soft metal and is usually alloyed to give it more strength. It is a good conductor of heat and electricity, and is unaffected by air and most reagents. It is used in coinage and is a standard for monetary systems in many countries. It is also extensively used for jewelry, decoration, dental work, and for plating. It is used for coating certain space satellites, as it is a good reflector of infrared and is inert. Gold, like other precious metals, is measured in troy weight; when alloyed with other metals, the term carat is used to express the amount of gold present, 24 carats being pure gold. For many years the value of gold was set by the U.S. at $20.67/troy ounce; in 1934 this value was fixed by law at $35.00/troy ounce, 9/10th fine. On March 17, 1968, because of a gold crisis, a two-tiered pricing system was established whereby gold was still used to settle international accounts at the old $35.00/troy ounce price while the price of gold on the private market would be allowed to fluctuate. Since this time, the price of gold on the free market has fluctuated widely. The price of gold on the free market reached a price of $620/troy oz. in January 1980. More recently, the U.K. and other nations, including the I.M.F. have sold or threatened to sell a sizeable portion of their gold reserves. This has caused wide fluctuations in the price of gold. Because this has damaged the economy of some countries, a moratorium for a few years has been declared. This has tended to stabilize temporarily the price of gold. The most common gold compounds are auric chloride (AuCl3) and chlorauric acid (HAuCl4), the latter being used in photography for toning the silver image. Gold has forty-eight recognized isotopes and isomers; 198Au, with a half-life of 2.7 days, is used for treating cancer and other diseases. Disodium aurothiomalate is administered intramuscularly as a treatment for arthritis. A mixture of one part nitric acid with three of hydrochloric acid is called aqua regia (because it dissolved gold, the King of Metals). Gold is available commercially with a purity of 99.999+%. For many years the temperature assigned to the freezing point of gold has been 1063.0°C; this has served as a calibration point for the International Temperature Scales (ITS-27 and ITS-48) and the International Practical Temperature Scale (IPTS-48). In 1968, a new International Practical Temperature Scale (IPTS68) was adopted, which demanded that the freezing point of gold be changed to 1064.43°C. In 1990 a new International Temperature Scale (ITS-90) was adopted bringing the t.p.(triple point) of H2O (t90 (°C)) to 0.01°C and the freezing point of gold to 1064.18°C. The specific gravity of gold has been found to vary considerably depending on temperature, how the metal is precipitated, and cold-worked. As of December 2001, gold was priced at about $275/troy oz. ($8.50/g).

使用

In manufacture of jewelry; in gold plating other metals; as a standard of currency; most frequently alloyed with silver and copper. For use in medicine, see Gold, Radioactive, Colloidal.

使用

Gold’s chemical and physical properties make it a very versatile element. Its noncorrosivenature provides protection as plating for other metals. Its malleability and ductile qualities meanit can be formed into many shapes, including very thin sheets (gold leaf) and very thin golddiode wires. Gold has the ability to carry electricity with little resistance, making it an excellentcomponent for all kinds of electronic equipment. Gold leaf finds many uses in surgery,space vehicles, and works of art. Gold electronic switches do not create a dangerous spark whenengaged, and they last for a long time. The element’s reflective surface provides protection frominfrared heat radiation as a coating on the visors of aerospace personnel, as well as on large windowexpanses in buildings. Its color and durability make it a major metal for the jewelry industry.Gold has been used to replace teeth for many ages, and the teeth usually last longer than theperson wearing them. Gold is also the worldwide monetary standard, although the United Statesabandoned the gold standard in the 1930s. Even so, gold is still traded as a commodity. Smallamounts of other metals are added to gold coinage for hardening purposes so that the coins willnot wear out with use. Gold bars (bullion) are stored in the treasuries of most countries. Somecountries maintain huge stockpiles of gold for both monetary and industrial uses.
Two forms of gold provide medical treatments. The radioactive isotope Au-198, with a shorthalf-life of 2.7 days, is used to treat cancer and is produced by subjecting pure gold to neutronswithin a nuclear reactor.

定義

A transition metal that occurs native. It is unreactive and is very ductile and malleable. Gold is used in jewelry, often alloyed with copper, and in electronics and colored glass. Pure gold is 24 carat; 9 carat indicates that 9 parts in 24 consist of gold. Symbol: Au; m.p. 1064.43°C; b.p. 2807°C; r.d. 19.320 (20°C); p.n. 79; r.a.m. 196.96654.

定義

gold: Symbol Au. A soft yellow malleablemetallic transition element;a.n. 79; r.a.m. 196.967; r.d. 19.32;m.p. 1064.43°C; b.p. 2807±2°C. Goldhas a face-centred-cubic crystal structure.It is found as the free metal ingravel or in quartz veins, and is alsopresent in some lead and copper sulphideores. It also occurs combinedwith silver in the telluride sylvanite,(Ag,Au)Te2. It is used in jewellery,dentistry, and electronic devices.Chemically, it is unreactive, beingunaffected by oxygen. It reacts withchlorine at 200°C to form gold(III)chloride. It forms a number of complexeswith gold in the +1 and +3 oxidationstates.

定義

Metallic element of atomic number 79, Group IB of the periodic table, aw 196.9665, valences of 1, 3; no stable isotopes.

危険性

Pure gold, if ingested, can cause skin rash or even a sloughing off of skin. It can also causekidney damage and problems with the formation of white blood cells.

応用例(製薬)

Gold has a long-standing tradition in medicine, as it has been used by many nations for thousands of years. From as early as 2500 BC, Arabians, Chinese and Indians used gold compounds for medicinal purposes. In mediaeval times, the elixir aurum potabile , whichwas an alcoholic mixture of herbs with some gold flakes, was sold by medicine men travelling around Europe and this elixir was supposed to cure most diseases. In the nineteenth century, Na[AuCl4] was reported to treat syphilis, whilst others used it to cure alcoholism. On a more serious note, Koch discovered in 1890 the antibacterial properties of gold cyanide. In vitro experiments with the Mycobacterium tuberculosis showed that gold cyanide has the potential as a tuberculosis therapy. Gold compounds were also investigated for the treatment of RA, when it was believed that RA was caused by bacteria, and many other health problems.

安全性プロファイル

Poison by intravenous route. Questionable carcinogen with experimental tumorigenic data by implantation. Can form explosive compounds with NH3, NH4OH + aqua regia, H2O2. Incompatible with mixtures containing chlorides, bromides, or iocbdes (if they can generate nascent halogens), some oxidizing materials (especially those containing halogens), alkali cyanides, thiocyanate solutions, and double cyanides. See also GOLD COMPOUNDS.

金 上流と下流の製品情報

原材料

準備製品


金 生産企業

Global( 145)Suppliers
名前 電話番号 ファックス番号 電子メール 国籍 製品カタログ 優位度
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22064 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20743 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32606 55
Shanghai Yingrui Biopharma Co., Ltd.
+86-21-33585366 E-mail:sales03@shyrchem.com
+86-21-34979012 sales03@shyrchem.com CHINA 663 60
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24093 58
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123
86-21-63290778 86-21-63218885 sj_scrc@sinopharm.com China 9938 79
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40376 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30273 84
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 sales@hwrkchemical.com China 14611 55

7440-57-5(金)キーワード:


  • 7440-57-5
  • Gold Nanoparticles (150nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (150nm, 1 OD, supplied in 0.1mM stabilizing surfactant)
  • Gold Nanoparticles (200nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (200nm, 1 OD, supplied in 0.1mM stabilizing surfactant)
  • Gold Nanoparticles (250nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (250nm, 1 OD, supplied in 0.1mM stabilizing surfactant)
  • Gold Nanoparticles (300nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (300nm, 1 OD, supplied in 0.1mM stabilizing surfactant)
  • Gold Nanoparticles (400nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (400nm, 1 OD, supplied in 0.1mM stabilizing surfactant)
  • Gold Nanoparticles (50nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline, 535nm abs. max.) reactant free
  • Gold Nanoparticles (50nm, 1 OD, supplied in 0.1mM stabilizing surfactant, 535nm abs. max.)
  • Gold Nanoparticles (60nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (60nm, 1 OD, supplied in 0.1mM stabilizing surfactant, 540nm abs. max.)
  • Gold Nanoparticles (70nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (70nm, 1 OD, supplied in 0.1mM stabilizing surfactant, 548nm abs. max.)
  • Gold Nanoparticles (80nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (80nm, 1 OD, supplied in 0.1mM stabilizing surfactant, 553nm abs. max.)
  • Gold Nanoparticles (90nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline) reactant free
  • Gold Nanoparticles (90nm, 1 OD, supplied in 0.1mM stabilizing surfactant, 564nm abs. max.)
  • Gold nanoparticles, 1% on carbon black (surfactant and reactant-free)
  • Gold nanoparticles, 1% on Titania (anatase) (surfactant and reactant-free)
  • Gold nanoparticles, 1% on Titania (rutile) (surfactant and reactant-free)
  • Gold nanoparticles, 10% on Titania (anatase) (surfactant and reactant-free)
  • Gold nanoparticles, 10% on Titania (rutile) (surfactant and reactant-free)
  • Gold nanoparticles, 5% on carbon black (surfactant and reactant-free)
  • Gold NanoUrchins (100nm diameter, 1 OD, 0.1 mM in phosphate-buffered saline, 680nm abs. max.) >95.0% reactant free
  • Gold NanoUrchins (50nm diameter, 1 OD, 0.1 mM in phosphate-buffered saline, 585nm abs. max.) >95.0% reactant free
  • Gold NanoUrchins (60nm diameter, 1 OD, 0.1 mM in phosphate-buffered saline, 585nm abs. max.) >95.0% reactant free
  • Gold NanoUrchins (70nm diameter, 1 OD, 0.1 mM in phosphate-buffered saline, 600nm abs. max.) >95.0% reactant free
  • C.I.ピグメントメタル3
  • 金粉末
  • 金,板状
  • 金,粒状
  • 金,線状
  • 金及びその化合物
  • (PET/金)ラミネート
  • コロイド性金
  • 金(粉末)
  • 金 (箔) 〈0.002×109×109MM〉
  • 金粉
  • 金, 粒状
  • 金, ロッド
  • 金, FOIL
  • 金, 塊状
  • 金箔
  • 金コロイド 粒子径5NM
  • 金コロイド 粒子径15NM
  • 金ナノロッド
  • 金ナノ粒子
  • 金めっき済みガラス製カバースリップ
  • 金被覆顕微鏡用スライドガラス
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