氧化镧

氧化镧用途

1.主要用于制造精密光学玻璃、光导纤维。也用于电子工业作陶瓷电容器，压电陶瓷掺入剂。还用作制硼化镧的原料，石油分离精制催化剂。

2.用于制造特种合金精密光学玻璃、高折射光学纤维板及摄影机、照相机、显微镜的镜头和高级光学仪器棱镜等。陶瓷工业用于制造陶瓷电容器、压电陶瓷掺入剂和X射线发光材料溴氧化镧粉等。用作多种反应的催化剂。氧化镧浸渗入氧化锂或氧化锆用于制造铁氧体磁体。用于改进钛酸钡、钛酸锶铁电体的温度相依性和介电性质，以及制造纤维光学器件和光学玻璃。

氧化镧名称

[ CAS 号 ]:
1312-81-8

[ 中文名 ]:
氧化镧(III)

[ 英文名 ]:
Lanthanum oxide

[中文别名 ]:

[英文别名 ]:

Dilanthanum oxide
Lanthanum(3+) oxide
EINECS 215-200-5
Lanthanum trioxide
Dilanthanum trioxide
MFCD00011071
Lanthanum(III) oxide
Lanthana
Lanthanum oxide

氧化镧物理化学性质

[ 密度 ]:
6.51 g/cm3

[ 沸点 ]:
4200ºC (4500 K)

[ 熔点 ]:
2315ºC

[ 分子式 ]:
La₂O₃

[ 分子量 ]:
325.809

[ 闪点 ]:
4200°C

[ 精确质量 ]:
325.797455

[ PSA ]:
43.37000

[ 外观性状 ]:
白色粉末

[ 折射率 ]:
1.88

[ 储存条件 ]:
室温，干燥

[ 稳定性 ]:
Stable.

[ 水溶解性 ]:
INSOLUBLE

氧化镧MSDS

详细MSDS(安全技术说明书)

氧化镧毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: OE5330000

CHEMICAL NAME :: Lanthanum oxide

CAS REGISTRY NUMBER :: 1312-81-8

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: La2-O3

MOLECULAR WEIGHT :: 325.82

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: ATDAEI Acute Toxicity Data. Journal of the American College of Toxicology, Part B. (Mary Ann Liebert, Inc., 1651 Third Ave., New York, NY 10128) V.1- 1990- Volume(issue)/page/year: 12,625,1993 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >9968 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: EQSSDX Environmental Quality and Safety, Supplement. (Stuttgart, Fed. Rep. Ger.) V.1-5, 1975-76. Discontinued. Volume(issue)/page/year: 1,1,1975 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2060 No. of Facilities: 406 (estimated) No. of Industries: 8 No. of Occupations: 11 No. of Employees: 22403 (estimated) No. of Female Employees: 11140 (estimated)

氧化镧安全信息

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi:Irritant;

[ 风险声明 (欧洲) ]:
R36

[ 安全声明 (欧洲) ]:
S26-S39

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
1

[ RTECS号 ]:
OE5330000

[ 海关编码 ]:
2846901200

氧化镧制备

1.萃取法原料为除铈后的硝酸稀土溶液，大约含La2O3 50％、CｅO2微量、Pr6O116%～7%、Nd2O3 30％。配制成ΣRxOy 320～330g/L的硝酸稀土溶液，采用中性膦萃取剂甲基膦酸二甲庚酯(P350)，以P350煤油体系经35～38级萃取分离，使镧与其他稀土分离，含镧萃余液经氨水中和、草酸沉淀，再经过滤、灼烧，制得氧化镧成品。由磷铈镧矿砂萃取或由灼烧碳酸镧或硝酸镧制得。也可以由镧的草酸盐加热分解制得。

2.把La(OH)3放入铂坩埚中，200℃下干燥，500℃下灼烧，超过840℃分解得到氧化镧。制法2［69］高于735℃温度下，在热天平［68］中加热草酸镧，升温速率为每分钟5.4℃。

氧化镧海关

[ 海关编码 ]: 2846901200

氧化镧文献

Electronic structure and magnetism of La4Ni3O8 from first principles.

J. Phys. Condens. Matter 24(40) , 405502, (2012)

The magnetic and electronic properties of La(4)Ni(3)O(8) are investigated by performing the full-potential linearized augmented plane wave method. The C-type antiferromagnetic spin ordering is preferr...

Magnetic structure of La2O3FeMnSe2: neutron diffraction and physical property measurements.

J. Phys. Condens. Matter 25(8) , 086004, (2013)

We report on the characterization of the mixed layered lanthanum iron manganese oxyselenide La(2)O(3)FeMnSe(2), where Fe and Mn share the same crystallographic position. The susceptibility data show a...

Laser action in Nd(3+)-doped lanthanum oxysulfide powders.

Opt. Express 20(21) , 23690-9, (2012)

We have investigated the stimulated emission properties of Nd(3+) doped La(2)O(2)S powders at room temperature as a function of pumping energy density, excitation wavelength, and Nd(3+) ion concentrat...

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氧化镧