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산화 란탄 구조식 이미지

산화 란탄

한글명:산화 란탄

카스 번호1312-81-8

상품명:Lanthanum oxide

CBNumberCB7464647

분자식La2O3

포뮬러 무게325.81

MOL 파일1312-81-8.mol

동의어(한글)

산화란타넘(산화란탄)

산화란탄

라우릭산

화학적 성질

녹는점

2315 °C

끓는 점

4200 °C

밀도

6.51 g/mL at 25 °C(lit.)

벌크 밀도

1300kg/m3

인화점

4200°C

저장 조건

no restrictions.

용해도

insoluble in H2O; soluble in dilute acid solutions

물리적 상태

나노분말

색상

흰색에서 노란색으로

Specific Gravity

6.51

수소이온지수(pH)

9.0 (50g/l, H2O, 20℃)(slurry)

비저항

1 ∞ 10*14 (550°C) (ρ/μΩ.cm)

수용성

불용성

감도

Hygroscopic

Crystal Structure

Trigonal

crystal system

Three sides

Merck

14,5363

Space group

P3m1

위험 및 안전 성명

위험품 표기

위험 카페고리 넘버

36/37/38-36

안전지침서

26-36-39

WGK 독일

RTECS 번호

OE5330000

TSCA

Yes

HS 번호

28469000

독성

LD50 orally in Rabbit: > 9968 mg/kg

NFPA 704:

	0
1		0

그림문자(GHS)

산화 란탄 MSDS

산화 란탄 화학적 특성, 용도, 생산

물성
성상: 고체, 색상: 흰색에서 흰색계통색까지, 냄새: 무취, pH: 9.0, 녹는점/어는점: 2315℃, 초기 끓는점과 끓는점 범위: 4200℃, 인화점: 인화하지 않음, 용해도: 물에 불용성, 비중: 6.51, 분자량: 325.81.
용도
광학 유리 부품, 광학 섬유 제작, 세라믹 산업, 촉매.
화학적 성질
Lanthanum oxide is an oxide of lanthanum (III), white orthorhombic or amorphous powder. Soluble in acid, ethanol, ammonium chloride, insoluble in water, ketone. It is mainly used in the manufacture of precision optical glass and optical fiber.
용도
Lanthanum oxide is used to make high-quality glass, ceramics, carbon-arc electrodes, and fluorescent lamps. Lanthanum (III) oxide was used as an analytical standard in inductively coupled plasma atomic emission spectrometry (ICP-AES) for chemical characterization of ancient pottery.
제조 방법
Lanthanum oxide can be produced by direct combustion of lanthanum in oxygen or air. The oxide also may be prepared by decomposition of an oxo salt of lanthanum, such as nitrate, sulfate, carbonate, hydroxide or oxalate.
La(CO₃)₃•8H₂O → La₂O₃ + 3CO₂ + 8H₂O
2La₂(C₂O₄)₃•9H₂O + 3O₂ → 2La₂O₃ + 12CO₂ + 18H₂O
주요 응용
Lanthanum Oxide, also called Lanthana, high purity Lanthanum Oxide (99.99% to 99.999%) is applied in making special optical glasses to improves the alkali resistance of glass, and is used in La-Ce-Tb phosphors for fluorescent lamps and making special optical glasses, such as infrared-absorbing glass, as well as camera and telescope lenses, Low grade of Lanthanum Oxide is widely used in ceramics and FCC catalyst, and also as raw material for Lanthanum Metal production; Lanthanum Oxide is also used as a grain growth additive during the liquid phase sintering of Silicon Nitride and Zirconium Diboride.
일반 설명
Lanthanum (III) oxide is an alkaline earth oxide, and is a diamagnetic, isostructural analog of neodymium oxide. It is also an efficient recyclable catalyst, and can be used in coupling various aryl halides with aromatic/alkyl thiols.
공업 용도
Lanthanum oxide (La₂O₃) has a melting pointof 2250°C, is soluble in acids, and very slightlysoluble in water. This oxide of a rare earth elementoccurs in monazite and bastnasite. It ismarketed as the oxide or as other salts such asthe oxalate, nitrate, or hydrate. It quicklyabsorbs water and CO₂ from the atmosphere.Its chief use is as an ingredient in nonsilica,rare element optical glass with oxides of tungsten, tantalum, and thorium. Lanthanumincreases refractive index, decreases dispersion,and is also used in x-ray image intensifyingscreens that speed up x-ray exposure asmuch as two to ten times so that diagnosticdosages may be reduced by as much as 80%with fewer retakes. It is also used in bariumtitanate capacitors.

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