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金

金用途

用作货币、珠宝饰物、牙科材料和电镀金属。金的量常用金衡制表示，并以“克拉”(carat，1克拉=0.2g)表示合金中金的纯度。24K就是纯金。金还用于制造各种电器、红外光反射器和玻璃着色剂。作为半导体连接所需的金线原料和镀金材料。

超细金粉是制备细线金浆、低温金浆及金钯、金铂钯、金银钯等优良导体浆料的主要导电材料。

半导体工业用作镀金材料。

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金名称

[ CAS 号 ]:
7440-57-5

[ 中文名 ]:
金

[ 英文名 ]:
Gold

[中文别名 ]:

金,海绵状

[英文别名 ]:

AUROUS
Gold
AURIC
EINECS 231-165-9
Au
MFCD00003436
Glod
gold-197
E 175

金物理化学性质

[ 密度 ]:
19.3 g/mL at 25 °C(lit.)

[ 沸点 ]:
2808 °C(lit.)

[ 熔点 ]:
1063 °C(lit.)

[ 分子式 ]:
Au

[ 分子量 ]:
196.967

[ 闪点 ]:
4 °C

[ 精确质量 ]:
196.966507

[ 外观性状 ]:
橙色-黄色-棕色-黄色粉末

[ 折射率 ]:
n20/589.3 1.523

[ 储存条件 ]:
2-8°C

[ 稳定性 ]:
Stable. May react with halogens, strong oxidizing agents, ammonia, hydrogen peroxide. Reaction with ammonia or hydrogen peroxide may form explosive materials.

[ 水溶解性 ]:
H2O: soluble

金MSDS

金毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: MD5070000

CHEMICAL NAME :: GOLD

CAS REGISTRY NUMBER :: 7440-57-5

LAST UPDATED :: 199710

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: Au

MOLECULAR WEIGHT :: 196.97

WISWESSER LINE NOTATION :: .AU

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 58 mg/kg

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - acute pulmonary edema Lungs, Thorax, or Respiration - dyspnea

REFERENCE :: ZEKBAI Zeitschrift fuer Krebsforschung. (Berlin, Fed. Rep. Ger.) V.1-75, 1903-71. For publisher information, see JCROD7. Volume(issue)/page/year: 63,586,1960 ** TUMORIGENIC DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Implant

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

REFERENCE :: NATWAY Naturwissenschaften. (Springer-Verlag, Heidelberger Platz 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1913- Volume(issue)/page/year: 42,75,1955

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Implant

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 21 gm/kg

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

REFERENCE :: NATWAY Naturwissenschaften. (Springer-Verlag, Heidelberger Platz 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1913- Volume(issue)/page/year: 42,75,1955

TYPE OF TEST :: TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :: Implant

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4730 mg/kg

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

REFERENCE :: NATWAY Naturwissenschaften. (Springer-Verlag, Heidelberger Platz 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1913- Volume(issue)/page/year: 42,75,1955 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - T0367 No. of Facilities: 80 (estimated) No. of Industries: 2 No. of Occupations: 2 No. of Employees: 174 (estimated) NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 35455 No. of Facilities: 1230 (estimated) No. of Industries: 18 No. of Occupations: 25 No. of Employees: 9464 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2971 No. of Facilities: 3 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 6 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7506 No. of Facilities: 225 (estimated) No. of Industries: 4 No. of Occupations: 10 No. of Employees: 2626 (estimated) No. of Female Employees: 108 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 35455 No. of Facilities: 2595 (estimated) No. of Industries: 27 No. of Occupations: 39 No. of Employees: 30128 (estimated) No. of Female Employees: 5425 (estimated)

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金安全信息

[ 个人防护装备 ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ 危害码 (欧洲) ]:
Xi,Xn,F

[ 风险声明 (欧洲) ]:
R36/38

[ 安全声明 (欧洲) ]:
S26-S36/37/39-S45-S62-S36/37

[ 危险品运输编码 ]:
UN 1789 8/PG 3

[ WGK德国 ]:
3

[ RTECS号 ]:
MD5420000

[ 包装等级 ]:
II

[ 危险类别 ]:
6.1

金合成路线

金制备

1.金主要以游离态(天然金)存在于自然界中，也存在于碲化物矿中。海水中含有一定量的金(0.1～2mg/t)，但尚无工业方法提取。通常采用氰化物法、汞齐法或熔炼法提取。纯化精炼金多采用电解法。将高纯氯化金溶液加入反应器中，在搅拌下加入草酸进行还原反应，过滤，用无离子水洗涤，制得高纯金成品。

超细金粉：可用热分解法和水溶液还原法制取。热分解法可获得平均粒度为1～2μm的金粉；水溶液还原法可获得平均粒度为0.05～0.5μm的金粉。

2.金通常是从含有天然金的矿石中提取获得，最常用的方法是氰化法。用稀的NaCN溶液(0.03%～0.2%)处理粉碎后的矿石，并通入空气，使金粒溶解，残渣分出后，用锌或铝将金置换出来。

该法的缺点是使用了大量的剧毒试剂氰化钠，对人体和环境有极大的危害。

另一重要的方法是用硫脲来取代氰化钠，即在酸性溶液中，存在氧化剂(如H2O2，FeCl3)的条件下，使金与硫脲反应。

3. 高纯金的制法.将高纯氯化金溶液加入反应器中，在搅拌下加入草酸进行还原反应，
过滤，用无离子水洗涤，制得高纯金成品。

然后用还原法还原出金。

若要获得高纯度的金，则必须通过电解精炼得到。将HAuCl2与盐酸混合液进行电解精炼，便可获得99.999%的高纯金。

将高纯氯化金溶液加入反应器中，在搅拌下加入草酸进行还原反应，过滤，用无离子水洗涤，制得高纯金成品。

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金文献

Stable gold(III) catalysts by oxidative addition of a carbon-carbon bond.

Nature 517(7535) , 449-54, (2015)

Low-valent late transition-metal catalysis has become indispensable to chemical synthesis, but homogeneous high-valent transition-metal catalysis is underdeveloped, mainly owing to the reactivity of h...

Building nanoSPR biosensor systems based on gold magnetic composite nanoparticles.

J. Nanosci. Nanotechnol. 13(8) , 5485-92, (2013)

Composite Fe3O4/Au nanoparticles are attracting considerable interest in developing visual and specific detection of biomolecular due to their unique physical and chemical properties. Here, two locali...

Nano gold conjugation, anti-arthritic potential and toxicity studies of snake Naja kaouthia (Lesson, 1831) venom protein toxin NKCT1 in male albino rats and mice.

Indian J. Exp. Biol. 52(8) , 763-72, (2014)

Nanoscience and Nanotechnology have found their way in the fields of pharmacology and medicine. The conjugation of drug to nanoparticles combines the properties of both. In this study, gold nanopartic...

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金

金用途

金名称

金物理化学性质

金MSDS

详细MSDS(安全技术说明书)

金毒性和生态

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

金安全信息

金合成路线

详细合成路线

金制备

金文献

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