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이터븀(이테르븀)

이터븀(이테르븀)
이터븀(이테르븀) 구조식 이미지
카스 번호:
7440-64-4
한글명:
이터븀(이테르븀)
동의어(한글):
이터븀(이테르븀);이터븀(이테르븀)(YTTERBIUM)
상품명:
YTTERBIUM
동의어(영문):
Yb;YB000200;YB000215;YB000230;YB000205;YB007920;YB006100;YB000260;YB005110;YB007910
CBNumber:
CB1276806
분자식:
Yb
포뮬러 무게:
173.04
MOL 파일:
7440-64-4.mol

이터븀(이테르븀) 속성

녹는점
824 °C(lit.)
끓는 점
1196 °C(lit.)
밀도
6.54 g/mL at 25 °C(lit.)
저장 조건
Flammables area
물리적 상태
powder
색상
Silver-gray
Specific Gravity
6.97
비저항
28 μΩ-cm, 20°C
수용성
It reacts slowly with water and is soluble in dilute acids.
감도
Air & Moisture Sensitive
Merck
13,10160
CAS 데이터베이스
7440-64-4(CAS DataBase Reference)
EPA
Ytterbium (7440-64-4)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,F,Xi
위험 카페고리 넘버 36/37/38-20/21/22-11-36/38
안전지침서 36-33-16-26
유엔번호(UN No.) UN 3089 4.1/PG 2
WGK 독일 3
RTECS 번호 ZG1925000
TSCA Yes
위험 등급 4.2
포장분류 I
HS 번호 28053090
기존화학 물질 KE-35448
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H228 인화성 고체 인화성 고체 구분 1
구분 2
위험
경고
P210, P240,P241, P280, P370+P378
H250 공기에 노출되면 스스로 발화함 자연발화성 액체;자연발화성 고체 구분 1 위험 P210, P222, P280, P302+P334,P370+P378, P422
H252 대량 자기발열성;(or 대량으로 존재시 자기발열성;) 화재를 일으킬 수 있음 자기발열성 물질 및 혼합물 구분 2 경고 P235+P410, P280, P407, P413, P420
H260 물과 접촉시 자연 발화성 인화성 가스를 발생시킴 물반응성 물질 및 혼합물 구분 1 위험 P223, P231+P232, P280, P335+ P334,P370+P378, P402+P404, P501
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H312 피부와 접촉하면 유해함 급성 독성 물질 - 경피 구분 4 경고 P280,P302+P352, P312, P322, P363,P501
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 P261, P271, P304+P340, P312
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P222 공기에 접촉하지 마시오.
P223 물과 접촉하지 마시오.
P240 용기와 수용설비를 접지 및 접합시키시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P231+P232 불활성 기체 하에서 취급하고, 습기를 방지하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
NFPA 704
1
2 1

이터븀(이테르븀) C화학적 특성, 용도, 생산

화학적 성질

metal chips

물리적 성질

Ytterbium is a silvery, soft, malleable, and ductile metal with a lustrous metallic shine.It is slightly reactive in air or water at room temperatures. Ytterbium is located next to lastof the rare-earths in the lanthanide series. It slowly oxidizes as it reacts with oxygen in theatmosphere, forming a somewhat duller coating. Ytterbium was the first rare-earth to bediscovered by Carl Gustof Mosander in 1843. More of it exists in the Earth’s crust than oncewas believed.
Ytterbium
It was often confused with other rare-earths and was known by two other names, aldebaraniumand cassiopeium. Ytterbium’s melting point is 819°C, its boiling point is 1,196°C, andits density is 6.9654g/cm3.

Isotopes

There are a total of 37 isotopes of ytterbium. Seven of these are stable, andthey make up all of the natural ytterbium found on Earth. One of these isotopes (Yb-176) has such a long half-life (1.6×10+17years) that it contributes 12.76% of the naturalytterbium existing on Earth, and thus it is considered stable. All the other 30 isotopes areartificially radioactive and produced by nuclear fission in nuclear reactors with half-livesranging from a fraction of a second to 32 days.

Origin of Name

Ytterbium is named for the Ytterby quarry located in Sweden.

출처

Ytterbium is the 45th most abundant element, and it ranks 10th in abundance (2.7 ppm)among the 17 rare-earths found in the Earth’s crust.
It is found in ores along with other rare-earths that were first found in the Ytterby quarryof Sweden. These ores are xenotime, euxenite, gadolinite, and monazite. Monazite river sand is the main source of ytterbium, which is found in India and Brazil and the beaches of Florida.Ytterbium is also found as a decay product of the fission reaction in nuclear reactors.

Characteristics

In the past there was some confusion about the rare-earths because they are not really earthsat all, but rather binary compounds of oxides of metals. Compounding the confusion was thefact that they were always found combined with several other rare-earths.
The salts of ytterbium are paramagnetic, which exhibit weaker magnetic fields than do ironmagnets.

역사

Marignac in 1878 discovered a new component, which he called ytterbia, in the Earth then known as erbia. In 1907, Urbain separated ytterbia into two components, which he called neoytterbia and lutecia. The elements in these earths are now known as ytterbium and lutetium, respectively. These elements are identical with aldebaranium and cassiopeium, discovered independently and at about the same time by von Welsbach. Ytterbium occurs along with other rare earths in a number of rare minerals. It is commercially recovered principally from monazite sand, which contains about 0.03%. Ion-exchange and solvent extraction techniques developed in recent years have greatly simplified the separation of the rare earths from one another. The element was first prepared by Klemm and Bonner in 1937 by reducing ytterbium trichloride with potassium. Their metal was mixed, however, with KCl. Daane, Dennison, and Spedding prepared a much purer form in 1953 from which the chemical and physical properties of the element could be determined. Ytterbium has a bright silvery luster, is soft, malleable, and quite ductile. While the element is fairly stable, it should be kept in closed containers to protect it from air and moisture. Ytterbium is readily attacked and dissolved by dilute and concentrated mineral acids and reacts slowly with water. Ytterbium has three allotropic forms with transformation points at –13° and 795°C. The beta form is a room-temperature, face-centered, cubic modification, while the high-temperature gamma form is a body-centered cubic form. Another bodycentered cubic phase has recently been found to be stable at high pressures at room temperatures. The beta form ordinarily has metallic-type conductivity, but becomes a semiconductor when the pressure is increased above 16,000 atm. The electrical resistance increases tenfold as the pressure is increased to 39,000 atm and drops to about 80% of its standard temperature- pressure resistivity at a pressure of 40,000 atm. Natural ytterbium is a mixture of seven stable isotopes. Twenty-six other unstable isotopes and isomers are known. Ytterbium metal has possible use in improving the grain refinement, strength, and other mechanical properties of stainless steel. One isotope is reported to have been used as a radiation source as a substitute for a portable X-ray machine where electricity is unavailable. Few other uses have been found. Ytterbium metal is available with a purity of about 99.9% for about $10/g. Ytterbium has a low acute toxicity rating.

용도

Ytterbium is being applied to numerous fiber amplifier and fiber optic technologies and in various lasing applications. 
Ytterbium metal increases its electrical resistance when subjected to very high stresses. This property is used in stress gauges for monitoring ground deformations from earthquakes and nuclear explosions. 
Ytterbium can also be used as a dopant to help improve the grain refinement, strength, and other mechanical properties of stainless steel. Some Ytterbium alloys have rarely been used in dentistry.
It is also used as in thermal barrier system bond coatings on nickel, iron and other transitional metal alloy substrates.
Ytterbium Metal, is being applied in improving the grain refinement, strength, and other mechanical properties of stainless steel and alloys. The 169Yb has been used as a radiation source in portable X-ray machines.169Yb is also used in nuclear medicine. Ytterbium can also be used as a dopant to help improve the grain refinement, strength, and other mechanical properties of stainless steel. Some ytterbium alloys have rarely been used in dentistry.
Ytterbium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder.

용도

There is not much commercial use for ytterbium. Radioactive ytterbium can be used for asmall portable X-ray source and as an alloy to make special types of strong steel. The oxides ofytterbium are used to make lasers and some synthetic gemstones.

정의

A metallic element. A rare-earth metal of yttrium subgroup, atomic number 70, aw 173.04, valence of 2, 3; exists in α and β forms, the latter being semiconductive at pressures above 16,000 atm. There are seven natural isotopes.

정의

A soft malleable silvery element having two allotropes and belonging to the lanthanoid series of metals. It occurs in association with other lanthanoids. Ytterbium has been used to improve the mechanical properties of steel. Symbol: Yb; m.p. 824°C; b.p. 1193°C; r.d. 6.965 (20°C); p.n. 70; r.a.m. 173.04.

정의

ytterbium: Symbol Yb. A silverymetallic element belonging to thelanthanoids; a.n. 70; r.a.m. 173.04;r.d. 6.965 (20°C); m.p. 819°C; b.p.1194°C. It occurs in gadolinite, monazite,and xenotime. There are sevennatural isotopes and ten artificial isotopesare known. It is used in certainsteels. The element was discoveredby Jean de Marignac (1817–94) in1878.

위험도

Ytterbium dust and powder can explode and may be toxic if inhaled. The compound.ytterbium arsenate is a poison.

Safety Profile

As a lanthanon it maj7 have an anticoagulant action on blood. Questionable carcinogen with experimental tumorigenic data. Flammable in the form of dust when reacted with air, halogens. See also LANTHANUM and RARE EARTHS.

이터븀(이테르븀) 준비 용품 및 원자재

원자재

준비 용품


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