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氟钽酸钾

氟钽酸钾用途

【用途一】
用于制金属钽和其他钽化合物。也用作催化剂、试剂。

氟钽酸钾名称

[ CAS 号 ]:
16924-00-8

[ 中文名 ]:
氟钽酸钾

[ 英文名 ]:
Dipotassium heptafluorotantalate(2-)

[中文别名 ]:

[英文别名 ]:

EINECS 240-986-1
POTASSIUM HEPTAFLUOROTANTALATE
potassiumfluorotantalate
potassiumfluotantalate
Tantalate(2-), heptafluoro-, potassium (1:2)
dipotassiumheptafluorotantalate
POTASSIUM TANTALUM FLUORIDE
Dipotassium heptafluorotantalate(2-)
Potassium fluoromntalate
TANTALUM POTASSIUM FLUORIDE

氟钽酸钾物理化学性质

[ 密度 ]:
4.56 g/mL at 25 °C(lit.)

[ 沸点 ]:
790°C

[ 熔点 ]:
°Cd ec.)

[ 分子式 ]:
F₇K₂Ta

[ 分子量 ]:
392.13300

[ 精确质量 ]:
391.86400

[ LogP ]:
2.94140

[ 外观性状 ]:
白色至米白色结晶碎屑或固体

[ 储存条件 ]:
库房通风低温干燥,与酸、食品添加剂分开存放

氟钽酸钾MSDS

详细MSDS(安全技术说明书)

氟钽酸钾毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TT1225000

CHEMICAL NAME :: Potassium heptafluorotantalate

CAS REGISTRY NUMBER :: 16924-00-8

LAST UPDATED :: 199701

DATA ITEMS CITED :: 9

MOLECULAR FORMULA :: F7-Ta.2K

MOLECULAR WEIGHT :: 392.15

WISWESSER LINE NOTATION :: KA2 TA-F7

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 :: 2500 mg/kg

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

REFERENCE :: AIHOAX Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.1-2(3), 1950. For publisher information, see AEHLAU. Volume(issue)/page/year: 1,637,1950

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 375 mg/kg

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

REFERENCE :: AIHOAX Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.1-2(3), 1950. For publisher information, see AEHLAU. Volume(issue)/page/year: 1,637,1950

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 110 mg/kg

REFERENCE :: 20PKA3 "Novye Dannye Po Toksikologii Redkikh Metalov Ikh Soedinenii," New Data on the Toxicology of Rare Metals and Their Compounds, Izrael'son, Z.I., ed., Moscow, Izdatel'stvo "Meditsina," 1967 Volume(issue)/page/year: -,115,1967 *** U.S. STANDARDS AND REGULATIONS *** OSHA PEL (Gen Indu):8H TWA 2.5 mg(F)/m3 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 2.5 mg(F)/m3 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 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO FLUORIDES, INORGANIC-air:10H TWA 2.5 mg(F)/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992

氟钽酸钾安全信息

[ 危害码 (欧洲) ]:
T,Xi

[ 风险声明 (欧洲) ]:
R23/25

[ 安全声明 (欧洲) ]:
S45

[ 危险品运输编码 ]:
UN 3288 6.1/PG 3

[ WGK德国 ]:
1

[ RTECS号 ]:
TT1225000

[ 包装等级 ]:
III

[ 危险类别 ]:
6.1

氟钽酸钾制备

酸浸法将钽铌矿粉碎后，缓慢加入盛有热浓氢氟酸与硫酸混合的酸浸槽中，将矿粉分解，所得溶液经倾析或过滤、调节酸度后，进行液一液萃取分离，萃取相用甲基异丁酮(MIBK)，根据酸度不同将铌、钽氟化物分离，钽的氟化物与氢氧化钾反应制得氟钽酸钾，再经冷却结晶、离心分离，制得氟钽酸钾产品。其