1344-59-8

• 常用中文名：八氧化三铀
• 常用英文名：uranium(v,vi) oxide
• CAS号：1344-59-8
• 分子式：O₈U₃
• 分子量：842.08200
• 相关类别： 无机化工 氧化物和过氧化物 金属氧化物
• 发布时间：2018-03-21 08:00:00
• 更新时间：2024-01-03 18:21:03

名称

• 中文名: 八氧化三铀
• 英文名: uranium(v,vi) oxide
• 英文别名: uraniumoxide-protoxide; triuraniumoctoxide; uraniumoctoxide; uraniumoctaoxide; uranous-uranicoxide; EINECS 215-702-4; URANIUM OXIDE; triuraniumoctaoxide; uraniumoxide(u3o8)

物化性质

• 密度: 8.3 g/cm3
• 熔点: 1300ºC (dec.)
• 分子式: O₈U₃
• 分子量: 842.08200
• 精确质量: 842.11200
• PSA: 128.72000
• 外观性状: green-black orthorhombic crystals
• 稳定性:

  氧化铀(V,VI)为黑褐色粉末，其颜色、密度会因开始时所用的原料的种类及加热条件而异。可溶于稀酸。氧化铀(V,VI)为斜方晶系的晶体，a＝6.716A（1A=0.1nm，下同），b＝11.960A、c=4.1469A。在250～500℃发生从α相转变到β相(斜方晶系，a=7.069A、b=11.445A、c=8.303A）的相变，但是转变点因O/U的组成比不同而有敏感的变化。

毒性和生态

CHEMICAL IDENTIFICATION RTECS NUMBER : YR4900000 CHEMICAL NAME : Uranium oxide CAS REGISTRY NUMBER : 1344-59-8 LAST UPDATED : 199701 DATA ITEMS CITED : 8 MOLECULAR FORMULA : O8-U3 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >4 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: 40(2),41,1975 TYPE OF TEST : LC - Lethal concentration ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >110 mg/m3/1H 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: 40(2),41,1975 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 120 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: 40(2),41,1975 TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : >2 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: 40(2),41,1975 TYPE OF TEST : LC - Lethal concentration ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : >110 mg/m3/1H 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: 40(2),41,1975 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 140 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: 40(2),41,1975 ** OTHER MULTIPLE DOSE TOXICITY DATA ** TYPE OF TEST : TCLo - Lowest published toxic concentration ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 10 mg/m3/4H/17W-I TOXIC EFFECTS : Liver - liver function tests impaired Kidney, Ureter, Bladder - other changes in urine composition 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: 40(2),41,1975

安全

• 危险品运输编码: UN 2910
• 危险类别: 7

制备

在空气中将四价铀的硝酸盐、草酸盐、过氧化物、三铀酸盐等加热到700～800℃时，都可制得氧化铀(V,VI)。

制法 取精制的三铀酸铵置于大蒸发皿中，在空气中加热至约800℃ 1～2小时，则盐将完全分解而制得粉末状的氧化铀(V,VI)。在此制备实验中温度是关键因素。如果加热至300～500℃时，盐几乎全部分解而转化为氧化物β-UO₃(若加热过氧化物，则生成α-UO₃或UO_2.9，若是硝酸盐则生成β或γ-UO₃)。如果在800℃以上长时间加热，则会逐渐失去氧而转变为非整比组成的U₃O_8-x，所以必须注意控制好热分解时的温度条件。