Chemical Formula | UO2(CH3COO)2·2H2O |
Appearance | Yellow, crystalline solid |
Molar Mass | 424.15 g/mol |
Solubility In Water | Soluble |
Melting Point | 280 °C (decomposes) |
Density | 2.89 g/cm³ |
Odour | Odourless |
Stability | Stable under normal conditions |
Hazard Class | Radioactive, Toxic |
Application | Used in electron microscopy as a stain |
What is the chemical structure of uranyl acetate?
Uranyl acetate (Uranyl Acetate) is a fascinating chemical. This is the compound containing acetate, and its core is the acyl molecule (UO ² ²). In this molecule, when it is highly oxidized, the oxygen atoms are arranged in a dense phase with heavy weight, forming a solid center.
This acyl center is coordinated by acetate (CH 🥰 COO). In acetate, the oxygen atom of the carbonyl group is coordinated to the acyl molecule. Usually, acetate is coordinated in the acyl coordination mode, that is, the oxygen atoms of the carbonyl group are all coordinated to form a specific empty pattern.
In this way, the molecular integrity shows a certain shape and has a specific chemical property. The properties of this compound do not determine its activity in the reaction of polymers, but also affect its physical properties, such as solubility, crystallization, etc. In addition, its chemical properties are formed by the ingenious coordination of acetate, which contains the ingenuity of the chemical world.
What fields is uranyl acetate commonly used in?
Uranium acetyl acetate, commonly known as uranium dioxy acetate, is useful in many fields.
First, in the field of technical research, it is an important dyeing., biological products are clearly imaged due to weak contrast. And uranium dioxy acetate can combine with biological macromolecules such as proteins, nucleic acids, etc., increasing the density of molecules, improving the contrast of products, so that biological ultrafine products can be clearly identified under the environment, helping researchers to explore the microstructure of biological parts, which is essential for the study of cellular organisms, viruses, etc.
Second, in terms of analysis, it can be used for qualitative and quantitative analysis. Some molecules, such as phosphate molecules, can be used to generate specific precipitates or complexes from uranium dioxide acetate, so as to determine the existence and content of phase molecules in solution, which is useful in water analysis, chemical composition analysis, etc.
Furthermore, it also has certain uses in nuclear engineering phase research. The main components of its non-nuclear fuel, however, because of its chemical elements, can be used as an important raw material or material in the study of chemical properties, anti-chemical treatment, and the synthesis and chemical treatment of chemical compounds. Provide basic support for research on nuclear fuel cycle and nuclear material treatment.
What are the precautions for the use of uranyl acetate?
Uranyl acetate is a commonly used reagent in chemical experiments. When using it, all kinds of precautions must not be ignored.
Bear the brunt, safety is the most important thing. Uranyl acetate has certain toxicity and radioactivity, and can be endangered by touching the skin, inhalation or accidental ingestion. Therefore, when taking it, it is necessary to wear protective equipment, such as gloves, goggles, and laboratory clothes, to prevent it from coming into contact with the body. And it should be operated in a well-ventilated place, or in a fume hood, so that the volatile gas can dissipate in time and avoid inhalation hazards.
In addition, the method of storage should also be paid attention to. It should be placed in a cool, dry and ventilated place, away from heat sources and fires. At the same time, it is very important to keep it sealed to prevent it from being damp, oxidized, causing changes in properties, and affecting the use effect.
During use, the weighing must be accurate. According to the amount required for the experiment, take it with an appropriate measuring tool. Do not take more waste, and do not take less to cause the experiment to fail to meet expectations. And when dissolving, follow the specified steps and solvents to ensure that it is fully dissolved to obtain a uniform solution.
In addition, after use, the remaining matter should not be discarded at will. It needs to be properly handled in accordance with relevant regulations to prevent pollution of the environment. The utensils used should also be cleaned in time to remove the residual uranium dioxide tannic acid for next use. In this way, safe and accurate use of uranium dioxide tannate can ensure the smooth operation of the experiment and the safety of the environment and the human body.
What are the methods for preparing uranyl acetate?
Uranyl acetate (Uranyl Acetate), there are several ways to make it. The first method is to take uranyl acetate trihydrate (UO (CH < COO) ³ · 3H < O) and dissolve it in an appropriate amount of water. When water is soluble, stir it slowly to make it evenly soluble. The water temperature can be at room temperature, if you want to dissolve it quickly, it can be slightly warm, but it should not be overheated to prevent it from decomposing.
Another method is to react with uranium oxide (UO < Br >) with acetic acid. Put uranium oxide in the container first, slowly add acetic acid, and there may be heat out during the reaction, so the temperature should be controlled. After the reaction is completed, take the obtained liquid, and evaporate and crystallize to obtain uranyl acetate. During evaporation, the temperature should not be too high to prevent it from deteriorating. When crystallizing, it may be necessary to let it stand so that the crystal will come out.
Complex with the reaction of uranyl nitrate (UO 2O (NO
)) and sodium acetate (CH < COONa). The two solutions are mixed and reacted immediately. After the reaction, it is separated and purified to remove its impurities. Separation can be done by filtration, and purification can be done by recrystallization to obtain high-purity uranyl acetate.
All kinds of production methods have their own requirements, and it is necessary to pay attention to the amount of material, the temperature of the reaction, and the order of operation to obtain good uranyl acetate.
What are the physical properties of uranyl acetate?
Uranium dioxide acetate is an important chemical substance. Its physical properties are as follows:
Looking at its appearance, at room temperature, uranium dioxide acetate is in a yellow crystalline shape, with a delicate texture, which seems to emit a soft light, which is quite pleasing to the eye. Its crystal structure is regular and orderly, showing the delicacy of nature.
As for solubility, this substance is easily soluble in water, just like ice and snow merging into a warm spring, quietly disappearing and forming a clear solution. And when dissolved in water, it will slightly exothermic, causing the water temperature to rise slightly, as if playing a small thermal movement in water. In alcohol solvents, it also has a certain solubility, but it is slightly less soluble than in water.
When it comes to density, uranium dioxide acetate is heavier than common liquids. When placed in a liquid, it will slowly sink, like a stable stone sinking to the bottom of the water, showing its heavy texture.
When talking about the melting point, when the temperature rises to a specific value, about 60 ° C, uranium dioxide acetate will gradually change from solid to liquid, just like the melting of ice, starting its transformation journey from solid to liquid.
Its smell, although not strong and pungent, but also has a unique chemical smell. Smell it, as if you can perceive the chemical mystery it contains. This physical property has important uses in many fields, whether it is scientific research experiments or industrial production, all of which play a unique role due to these properties.