URANIUM(VI) OXIDE
- CAS No.
- 1344-58-7
- Chemical Name:
- URANIUM(VI) OXIDE
- Synonyms
- UO3;trioxouranium;triketouranium;URANIUM TRIOXIDE;URANIUM(VI) OXIDE;Uranium oxide (UO3);URANIUM OXIDE YELLOW;Uranyl oxide, orange;Uranium(VI) oxide, red;URANIUM (VI) OXIDE 99.8%
- CBNumber:
- CB6362445
- Molecular Formula:
- O3U
- Molecular Weight:
- 286.03
- MDL Number:
- MFCD00036303
- MOL File:
- 1344-58-7.mol
| Melting point | °Cd ec.) |
|---|---|
| Density | 7,29 g/cm3 |
| solubility | insoluble in H2O; soluble in acid solutions |
| form | orange-yellow crystals |
| color | orange-yellow crystals, crystalline |
| Water Solubility | insoluble H2O; soluble acids [MER06] |
| EWG's Food Scores | 1 |
| FDA UNII | Q47SFG7DIQ |
| EPA Substance Registry System | Uranium trioxide (1344-58-7) |
URANIUM(VI) OXIDE Chemical Properties,Uses,Production
Chemical Properties
Uranium trioxide has been isolated in six well-defined stoichiometric modifications as well as a hypostoichiometric modification, UO2. Similar to U3O8, the trioxide decomposes into lower oxides prior to melting or subliming. Even though UO3 is formally U(VI), a small temperature-dependent paramagnetism exists with molar magnetic susceptibility values ranging from 128 to 157×10?6 cm3/mol. A general trend has been observed for the densities of uranium oxides; an inverse proportionality between the O/U ratio and the density of the material. The trioxide does not deviate from this trend with density values ranging from 6.99 to 8.54 g/cm3, depending on the modification.
Chemical Properties
-100 mesh; has six forms: α is hexagonal brown, β is orange monoclinic, γ is bright yellow rhomb, δ is red cub, ε is brick red tricl, ηis rhomb; UO3 can be obtained by thermal decomposition of uranyl compounds, e.g, carbonates, oxalates nitrates [KIR83] [CER91]
Uses
Uranium trioxide, UO3, is a versatile solid that has important applications in the nuclear fuel cycle.
Purification Methods
The oxide is dissolved in HClO4 (to give a uranium content of 5%), and the solution is adjusted to pH 2 by addition of dilute ammonia. Dropwise addition of 30% H2O2, with rapid stirring, precipitated U(VI) peroxide, the pH being held constant during the precipitation, by addition of small amounts of the ammonia solution. Then H2O2 is added until further quantities caused no change in pH. After stirring for 1hour, the slurry is filtered through coarse filter paper in a Büchner funnel, washed with 1% H2O2 acidified to pH 2 with HClO4, then heated at 350o for three days in a large platinum dish [Baes J Phys Chem 60 878 1956].
URANIUM(VI) OXIDE Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 | linda@hubeijusheng.com | CHINA | 22968 | 58 |
| ShanDong Look Chemical Co.,Ltd. | +8617653113219 | sales01@sdlookchemical.com | China | 2739 | 58 |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | 1026@dideu.com | China | 9116 | 58 |
| Tianmen Hengchang Chemical Co., Ltd | 027-59322316 15172518801 | 1208480077@qq.com | China | 9946 | 58 |
| Henan Lien Chemical Products Co., Ltd. | 15378766539 | 535046669@qq.com | China | 3983 | 58 |
| Hubei Xinkang Pharmaceutical Chemical Co., Ltd | 027-027-59308705 18871579363 | 1248680011@qq.com | China | 9984 | 58 |
| Hubei Guangao Biotechnology Co., Ltd | 027-027-59223056 18162699093 | 1208480011@qq.com | China | 9951 | 58 |
| Hubei Yunmei Technology Co., Ltd | 027-59206672 18327059871 | service@yunmeichem.com | China | 5002 | 58 |
| Guangdong Fangxin Biotechnology Co., Ltd. | 0751-2838688 13376594225 | 1276075424@qq.com | China | 9934 | 58 |