天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

ChemicalBook--->CAS DataBase List--->7439-94-3

7439-94-3

7439-94-3 Structure

7439-94-3 Structure
IdentificationMore
[Name]

LUTETIUM
[CAS]

7439-94-3
[Synonyms]

Lu
Lutecium
LU006010
LUTETIUM
Cassiopeum
838Lutetium
Lutetium foil
Lutetiumchips
lutetium atom
Lutetium ingot
LUTETIUM METAL
LUTETIUM, LUMP
Lutetium Pieces
Lutetium powder
LutetiumingotNREO
LUTETIUM STANDARD
LUTETIUM CHIPS 99.9%
Lutetium,99.9%,ingot
Lutetium foil25x25mm
Lutetium foil50x50mm
Lu Standard Solution
LUTETIUM CHIP 99.9%
LUTETIUM ICP STANDARD
LUTHETIUM ICP STANDARD
LutetiumpowderNREOmesh
LUTETIUM, INGOT, 99.9%
Lutetiumfoil(99.9%REO)
Lutetium, ingot, 99.90%
LUTETIUM, 99.90%, INGOT
Lutetium, Powder 40 Mesh
Lutetiumpowder(99.9%REO)
LUTETIUM INGOT (99.9% REO)
LutetiumfoilNmmthickcagxmm
GADOLINIUM 1,000PPM FOR ICP
LUTETIUM PIECES, 99.9% (REO)
Lutetium foil (99.9% REO) 3N
Lutetium, powder, ca. 40 mesh
7440-15-5 ISO 9001:2015 REACH
Lutetium, Powder 40 Mesh 99.9%
LUTETIUM, AAS STANDARD SOLUTION
LUTETIUM INGOT, 3N: (99.9% REO)
LUTETIUM POWDER, 3N: (99.9% REO)
LUTETIUM SINGLE ELEMENT STANDARD
LUTETIUM PLASMA EMISSION STANDARD
LUTETIUM, PLASMA STANDARD SOLUTION
Lutetium,99.9%,powder, ca. 40 mesh
LUTETIUM ATOMIC ABSORPTION STANDARD
LUTETIUM, POWDER, CA. 40 MESH, 99.9%
LUTETIUM POWDER (99.9% REO) -40 MESH
Lutetium pieces, Distilled dendritic
Lutetium foil, 0.5mm (0.02 in.) thick
LUTETIUM FOIL (99.9% REO) 0.5MM THICK
Lutetium, powder, ca. 40 mesh, 99.90%
LUTETIUM FOIL (99.9% REO) 0.1MM THICK
LUTETIUM, 99.90%, POWDER, CA. 40 MESH
Lutetium foil, 0.1mm (0.004 in.) thick
Lutetium foil, 0.127mm (0.005 in.) thick
Lutetium rod, &ap:6.35mm (0.25 in.) dia.
LUTETIUM ATOMIC ABSORPTION STANDARD SOLUTION
Manganese Telluride (MnTe) Sputtering Targets
LUTETIUM PLASMA EMISSION SPECTROSCOPY STANDARD
Lutetium plasma standard solution, Lu 1000μg/mL
Lutetium plasma standard solution, Lu 10000μg/mL
LUTETIUM FOIL, 0.1MM (0.004IN) THICK, 99.9% (REO)
LUTETIUM FOIL, 0.127MM (0.005IN) THICK, 99.9% (REO)
Lutetiumrod,99,9%,(excl.Ta,typ.2%),6,35mmx150mm(+/-1mm)
Lutetium, AAS standard solution, Specpure(R), Lu 1000μg/ml
LUTETIUM ROD, 6.35MM (0.25IN) DIA, 99.9% (METALS BASIS EXCLU
Lutetium, plasma standard solution, Specpure(R), Lu 1000μg/ml
Lutetium, plasma standard solution, Specpure(R), Lu 10,000μg/ml
Lutetium rod, 6.35mm dia., 99.9% trace metals basis excluding Ta
Lutetium pieces, distilled dendritic, 99.9% trace rare earth metals basis
[EINECS(EC#)]

231-103-0
[Molecular Formula]

Lu
[MDL Number]

MFCD00011098
[Molecular Weight]

174.97
[MOL File]

7439-94-3.mol
Chemical PropertiesBack Directory
[Appearance]

grey powder
[Melting point ]

1663 °C (lit.)
[Boiling point ]

3402 °C (lit.)
[density ]

9.84 g/mL at 25 °C(lit.)
[storage temp. ]

Flammables area
[solubility ]

soluble in dilute acid solutions
[form ]

powder
[color ]

Silver-gray
[Specific Gravity]

9.842
[Resistivity]

54 μΩ-cm, 20°C
[Water Solubility ]

Insoluble in water.
[Sensitive ]

Air & Moisture Sensitive
[Merck ]

13,5635
[Exposure limits]

ACGIH: TWA 2 ppm; STEL 4 ppm
OSHA: TWA 2 ppm(5 mg/m3)
NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)
[History]

In 1907, Urbain described a process by which Marignac’s ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium. These elements were identical with “aldebaranium” and “cassiopeium,” independently discovered by von Welsbach about the same time. Charles James of the University of New Hampshire also independently prepared the very pure oxide, lutecia, at this time. The spelling of the element was changed from lutecium to lutetium in 1949. Lutetium occurs in very small amounts in nearly all minerals containing yttrium, and is present in monazite to the extent of about 0.003%, which is a commercial source. The pure metal has been isolated only in recent years and is one of the most difficult to prepare. It can be prepared by the reduction of anhydrous LuCl3 or LuF3 by an alkali or alkaline earth metal. The metal is silvery white and relatively stable in air. While new techniques, including ion-exchange reactions, have been developed to separate the various rare-earth elements, lutetium is still the most costly of all rare earths. It is priced at about $100/g (99.9%). 176Lu occurs naturally (97.41%) with 175Lu (2.59%), which is radioactive with a very long half-life of about 4 × 1010 years. Lutetium has 50 isotopes and isomers that are now recognized. Stable lutetium nuclides, which emit pure beta radiation after thermal neutron activation, can be used as catalysts in cracking, alkylation, hydrogenation, and polymerization. Virtually no other commercial uses have been found yet for lutetium. While lutetium, like other rare-earth metals, is thought to have a low toxicity rating, it should be handled with care until more information is available.
[CAS DataBase Reference]

7439-94-3(CAS DataBase Reference)
[EPA Substance Registry System]

Lutetium (7439-94-3)
Safety DataBack Directory
[Hazard Codes ]

F,Xi
[Risk Statements ]

R11:Highly Flammable.
R36/38:Irritating to eyes and skin .
[Safety Statements ]

S16:Keep away from sources of ignition-No smoking .
S33:Take precautionary measures against static discharges .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
[RIDADR ]

UN 3089 4.1/PG 2
[WGK Germany ]

3
[TSCA ]

Yes
[HazardClass ]

4.1
[PackingGroup ]

III
Raw materials And Preparation ProductsBack Directory
[Preparation Products]

Thulium oxide-->Ytterbium(III) oxide-->LUTETIUM OXIDE
Hazard InformationBack Directory
[Chemical Properties]

grey powder
[Physical properties]

In the last (17th) position in the lanthanide series, lutetium is the heaviest and largestmolecule of all the rare-earths as well as the hardest and most corrosion-resistant. It has asilvery-white color and is somewhat stable under normal atmospheric conditions.
Its melting point is 1,663°C, its boiling point is 3,402°C, and its density is 9.84g/cm3.
[Isotopes]

There are a total of 59 isotopes of Lutetium. Only two of these are stable: Lu-175, which makes up 97.41% of all the natural abundance found on Earth. The otheris a long-lived radioisotope (Lu-176) with such a long half-life (4.00×10+10 years) thatit is considered stable: Lu-176 contributes 2.59% to the natural abundance of lutetium.
[Origin of Name]

Lutetium’s name is derived from the ancient Latin name for Paris, France: Lutecia.
[Occurrence]

Lutetium is the 60th most abundant element on Earth, and it ranks 15th in the abundanceof the rare-earths. It is one of the rarest of the lanthanide series. It is found in monazite sand(India, Australia, Brazil, South Africa, and Florida), which contains small amounts of all therare-earths. Lutetium is found in the concentration of about 0.0001% in monazite. It is difficultto separate it from other rare-earths by the ion-exchange process. In the pure metallicform, lutetium is difficult to prepare, which makes is very expensive.
[Characteristics]

Lutetium has had a number of different names over the years. At one time or another,it was called neoytterbium, lutecium, lutetia, lutetium, and cassiopium. Some scientists inGermany still refer to it as cassiopium.
Lutetium reacts slowly with water and is soluble in weak acids. Its crystals exhibit strongmagnetic properties, which are important to the study of magnetism.
[Definition]

A silvery element of the lanthanoid series of metals. It occurs in association with other lanthanoids. Lutetium is a very rare lanthanoid and has few uses. Symbol: Lu; m.p. 1663°C; b.p. 3395°C; r.d. 9.84 (25°C); p.n. 71; r.a.m. 174.967.
[Definition]

lutetium: Symbol Lu. A silvery metallic element belonging to thelanthanoids; a.n. 71; r.a.m. 174.97;r.d. 9.8404 (20°C); m.p. 1663°C; b.p.3402°C. Lutetium is the least abundantof the elements and the little quantities that are available have been obtained by processing other metals. There are two natural isotopes,lutetium–175 (stable) andlutetium–176 (half-life 2.2×1010years). The element is used as a catalyst.It was first identified by GergesUrbain (1872–1938) in 1907.
[Hazard]

Lutetium fluoride is a skin irritant, and its fumes are toxic if inhaled. The dust and powderof the oxides of some rare-earths, including lutetium, are toxic if inhaled or ingested.
Questions and Answers (Q&A)Back Directory
[Uses]

Lutetium is the last member of the rare earth series. Unlike most rare earths it lacks a magnetic moment. It also has the smallest metallic radius of any rare earth. It is perhaps the least naturally abundant of the Lanthanides. It is the ideal host for x-ray phosphors because it produces the densest known white material, Lutetium Tantalate (LuTaO4). It is utilized as a dopant in matching lattice parameters of certain substrate garnet crystals, such as Indium-Gallium-Garnet (IGG) crystals due its lack of a magnetic moment.
Lutetium isotopes can data the age of meteorites and are used to target tumors experimentally. Stable lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerization applications.
Lutetium Metal, is the hardest metal of the rare-earths, used as important additive to some specialty alloy. Stable Lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerization applications. Lutetium is used as a phosphor in LED light bulbs.
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

Lutetium rod, 6.35mm (0.25in) dia, 99.9% (metals basis excluding Ta), Ta typically 2%(7439-94-3)
[Sigma Aldrich]

7439-94-3(sigmaaldrich)
7439-94-3 suppliers list
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 18871490254
Website: www.hubeijusheng.com
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: +86-0551-65418671 +8618949823763 , +8618949823763
Website: www.tnjchem.com
Company Name: Shaanxi Dideu Medichem Co. Ltd
Tel: +86-029-89586680 +86-18192503167 , +86-18192503167
Website: www.dideu.com
Company Name: Zhuoer Chemical Co., Ltd
Tel: 02120970332; +8613524231522 , +8613524231522
Website: http://www.zhuoerchem.com/
Company Name: Henan Alfa Chemical Co., Ltd
Tel:
Website: www.approvedhomemanagement.com/manufacturer/henan-alfa-chemical-570/
Company Name: Alfa Chemistry
Tel:
Website: www.alfa-chemistry.com/
Company Name: LEAPCHEM CO., LTD.
Tel: +86-852-30606658
Website: www.leapchem.com
Company Name: Aladdin Scientific
Tel: +1-+1(833)-552-7181
Website: www.aladdinsci.com/
Company Name: ABCR GmbH & CO. KG
Tel: 49 721 95061 0
Website: www.abcr.de
Company Name: Mainchem Co., Ltd.  
Tel: +86-0592-6210733
Website: https://www.mainchem.com
Company Name: Tianjin Seventeen Element Technology Co. LTD  Gold
Tel: 400-004-1117 13611222737
Website: shop474153958.taobao.com/?spm=a1z10.5-c-s.w20925335-23205027710.3.7b9b5607vvuahn
Company Name: J & K SCIENTIFIC LTD.  
Tel: 010-82848833 400-666-7788
Website: http://www.jkchemical.com
Company Name: Alfa Aesar  
Tel: 400-6106006
Website: http://chemicals.thermofisher.cn
Company Name: Beijing HwrkChemical Technology Co., Ltd  
Tel: 010-89508211 18501085097
Website: http://www.hwrkchemical.com
Company Name: Energy Chemical  
Tel: 021-021-58432009 400-005-6266
Website: http://www.energy-chemical.com
Company Name: JinYan Chemicals(ShangHai) Co.,Ltd.  
Tel: 13817811078
Website: www.jingyan-chemical.com
Company Name: Nanjing Chemlin Chemical Co., Ltd  
Tel: 025-83697070
Website: www.echemlin.cn
Company Name: Shanghai Hanhong Scientific Co.,Ltd.  
Tel: 021-54306202 13764082696
Website: www.hanhongsci.com
Tags:7439-94-3 Related Product Information
15230-79-2 18779-08-3 10099-66-8 12032-20-1 13760-81-1 7439-94-3