四氟化铀

四氟化铀名称

[ CAS 号 ]:
10049-14-6

[ 中文名 ]:
四氟化铀

[ 英文名 ]:
Uranium tetrafluoride

[英文别名 ]:

le fluorure d'uranium
EINECS 233-170-1
uranium fluoride

四氟化铀物理化学性质

[ 密度 ]:
6.700

[ 沸点 ]:
1446.94°C (estimate)

[ 熔点 ]:
>1100°

[ 分子式 ]:
F₄U

[ 分子量 ]:
314.02300

[ 精确质量 ]:
314.04400

[ 外观性状 ]:
green monoclinic crystals

[ 水溶解性 ]:
insoluble H2O; soluble conc acids, alkalies, but decomposes [MER06]

四氟化铀MSDS

详细MSDS(安全技术说明书)

四氟化铀毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: YR4710000

CHEMICAL NAME :: Uranium floride

CAS REGISTRY NUMBER :: 10049-14-6

LAST UPDATED :: 199710

DATA ITEMS CITED :: 10

MOLECULAR FORMULA :: F4-U

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

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 :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >100 mg/m3/1H

TOXIC EFFECTS :: Kidney, Ureter, Bladder - proteinuria Kidney, Ureter, Bladder - other changes in urine composition Blood - other changes

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 20 mg/kg

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

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 15 mg/kg

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

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >100 mg/m3/1H

TOXIC EFFECTS :: Kidney, Ureter, Bladder - proteinuria Kidney, Ureter, Bladder - other changes in urine composition Blood - other changes

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 40 mg/kg

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

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 5 mg/kg

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

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 12 mg/m3/4H/17W-I

TOXIC EFFECTS :: Kidney, Ureter, Bladder - proteinuria Blood - pigmented or nucleated red blood cells Blood - changes in leukocyte (WBC) count

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 37(2),60,1972

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四氟化铀安全信息

[ 危险品运输编码 ]:
UN 2912

四氟化铀上下游产品

四氟化铀上游产品

四氟化铀下游产品

四氟化铀制备

制法1 UO₂+4HF→UF₄+2H₂O【250～270℃反应温度】

二氧化铀与氟化氢反应可生成四氟化铀，但同时此反应也可以逆向进行，所以反应过程中要及时除去生成的水。

由于二氧化铀易被氧化生成高氧化态化合物，而高氧化态氧化物用氟化氢进行氟化时，可生成UO₂F₂，则将使四氟化铀的纯度下降，所以反应前二氧化铀要预先在氢气流中，于800～900℃下进行还原处理2～3h，使之重新变成UO2。取适量的二氧化铀放入铂舟或镍舟中，送入反应管内，用高纯度的氩将系统内的空气完全逐出以后，升温至550～650℃，通入氟化氢。反应时间依氧化铀的粉碎程度而定。反应完毕后，停止导入氟化氢，再通入氩气将残留的氟化氢完全逐出以后，迅速使反应管的温度降至常温。如果在残留有氟化氢的情况下降至常温时，则氟化氢将被吸附在氟化铀上。应注意，如果在氟化氢中或用作逐出气的氩气中含有水及氧气时，会使四氟化铀中的双氧铀及氧化物杂质含量增加。

制法2

2UO₂+5NH₄F·HF→2UF₄·NH₄F+3NH₃+4H₂O【150℃反应温度】

UF₄·NH₄F4→UF₄+NH₄F【50℃反应温度】

氟氢化铵(在常温下为稳定的白色粉末，容易处理。)与二氧化铀反应可制得四氟化铀。

往二氧化铀粉末中加入比所需量过量20％的氟氢化铵粉末，在惰性气氛中充分混合，压成疏松的片，放进聚四氟乙烯反应器中，导入惰性气体，同时在150℃下加热8h，就可制得绿色的UF₄·NH₄F。将UF₄·NH₄F移至铂舟中，并放入镍制反应管或不锈钢反应管内，如果在惰性气流中加热至450℃，随着反应的进行，NH4F逐渐挥发而分离出去，即可得到四氟化铀。