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氧化钽

氧化钽用途

【用途一】
供拉钽酸锂单晶和制造高折射低色散特种光学玻璃用，化工中可作催化剂。
【用途二】
用于生产钽酸锂晶体和特种光学玻璃添加剂。

氧化钽名称

[ CAS 号 ]:
1314-61-0

[ 中文名 ]:
氧化钽

[ 英文名 ]:
Tantalum(V)oxide

[中文别名 ]:

[英文别名 ]:

Tantalum(V)oxide
Tantalum pentoxide
MFCD00011254
Tantalum(V) Oxide
EINECS 215-238-2
dioxotantaliooxy(dioxo)tantalum

氧化钽物理化学性质

[ 密度 ]:
8.2 g/mL at 25 °C(lit.)

[ 熔点 ]:
1872 °C

[ 分子式 ]:
O₅Ta₂

[ 分子量 ]:
441.89300

[ 精确质量 ]:
441.87100

[ PSA ]:
77.51000

[ 外观性状 ]:
白色至白色-米色粉末

[ 储存条件 ]:
置于密闭容器内,避免产生粉尘

氧化钽MSDS

详细MSDS(安全技术说明书)

氧化钽毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: WW5855000

CHEMICAL NAME :: Tantalum oxide

CAS REGISTRY NUMBER :: 1314-61-0

LAST UPDATED :: 199712

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: O5-Ta2

MOLECULAR WEIGHT :: 441.90

WISWESSER LINE NOTATION :: TA2 O5

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 8 gm/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

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >5 gm/kg

TOXIC EFFECTS :: Vascular - regional or general arteriolar or venous dilation Liver - other changes Blood - other changes

REFERENCE :: INMEAF Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher information, see IOHSA5. Volume(issue)/page/year: 15,482,1946

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >4 gm/kg

TOXIC EFFECTS :: Behavioral - muscle contraction or spasticity Lungs, Thorax, or Respiration - acute pulmonary edema Liver - hepatitis (hepatocellular necrosis), diffuse

REFERENCE :: HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA. (Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year: 32(10-12),343,1967 *** REVIEWS *** ACGIH TLV-TWA 5 mg(Ta)/m3, dust DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 5mg(Ta)/m3, dust DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** OSHA PEL (Gen Indu):8H TWA 5 mg/m3, dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 5 mg/m3, dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 5 mg/m3, dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

氧化钽安全信息

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

[ 危害码 (欧洲) ]:
Xi

[ 风险声明 (欧洲) ]:
R36/37/38

[ 安全声明 (欧洲) ]:
S37/39-S26

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

[ WGK德国 ]:
-

[ RTECS号 ]:
WW5855000

氧化钽制备

1.氟钽酸钾法将氟钽酸钾与硫酸加热至400℃，反应物加水至沸，经充分稀释使酸化溶液水解，生成水合氧化物沉淀，再经分离、洗涤、烘干，得五氧化二钽成品。其

2.金属钽氧化法将金属钽片溶于硝酸、氢氟酸混酸中，经萃取提纯，用氨水沉淀氢氧化钽，再经水洗、烘干、灼烧、磨细，得五氧化二钽成品。其

3.钽酸加热脱水，或七氟合钽酸钾K2TaF7用浓硫酸灼烧分解，将其生成物用水抽提就可得到Ta2O5。纯五氧化二钽是将金属钽片或钽丝在氧气流中灼烧而成。

氧化钽文献

Effects of oxygen content on the optical properties of tantalum oxide films deposited by ion-beam sputtering.

Appl. Opt. 24(4) , 490-495, (1985)

Intermixing at the tantalum oxide/silicon interface in gate dielectric structures. Alers GB, et al.

Appl. Phys. Lett. 73(11) , 1517-1519, (1998)

Synthesis and characterization of hexagonally packed mesoporous tantalum oxide molecular sieves. Antonelli DM and Ying JY

Chem. Mater. 8(4) , 874-881, (1996)

更多文献

氧化钽