Chemical Formula | TeF6 |
Molar Mass | 241.59 g/mol |
Appearance | Colorless gas |
Odor | Pungent |
Density | 6.29 g/L (gas at STP) |
Melting Point | -37.6 °C |
Boiling Point | 3.8 °C |
Solubility In Water | Reacts with water |
Vapor Pressure | High (volatile) |
Oxidation State Of Te | +6 |
Molecular Shape | Octahedral |
Electronegativity Difference | High (polar covalent) |
What are the main uses of tellurium hexafluoride?
Sulfur hexafluoride has a wide range of main uses.
In the electrical field, this is an excellent insulation and arc extinguishing medium. With its high dielectric strength and good arc extinguishing performance, it is often placed in high-voltage switches, gas-insulated combined electrical appliances (GIS) and other equipment. Such equipment is crucial in power transmission and transformation of power grids. The application of sulfur hexafluoride can ensure the stable operation of equipment and effectively protect against electrical accidents. For example, when sulfur hexafluoride is filled in a high-voltage circuit breaker, when the circuit is short-circuited or overloaded, it can quickly extinguish the arc, returning the circuit to normal and avoiding equipment damage caused by continuous arc combustion.
In the electronics industry, it is also useful. For example, in semiconductor manufacturing processes, sulfur hexafluoride is often used as an etching gas. It can precisely etch semiconductor materials, help manufacture fine electronic components, and provide assistance for the performance improvement and miniaturization of electronic products.
In terms of meteorological and tracer research, sulfur hexafluoride can be used as a tracer because of its stable chemical properties, little reaction with other substances, and long retention in the atmosphere. Scientists release devices containing sulfur hexafluoride to monitor its diffusion and propagation in the atmosphere, and explore meteorological and environmental issues such as atmospheric flow and pollutant diffusion paths.
In the smelting process of non-ferrous metals such as magnesium and aluminum, sulfur hexafluoride can be filled into the furnace as a protective gas. It can form a protective film on the surface of molten metal, isolate air, inhibit metal oxidation, and improve metal purity and quality.
All of this shows that sulfur hexafluoride is indispensable in various fields and contributes greatly to industrial production and scientific and technological progress.
What are the physical properties of tellurium hexafluoride?
The physical properties of the five rivers that melt ice are as follows:
The first is the change of shape. When the spring air is getting warmer and the warm sun is shining, the ice of the five rivers gradually transforms from a solid state to a soft flowing water. The ice is inherently hard and brittle, just like white jade spread on the river surface, it is cold to the bone, and the sound is crisp when it is knocked. However, when the ice melts, its firmness gradually disappears, and it first becomes the shape of broken ice. It is scattered like Qionghua, drifting with the current, then melting into a trickle, and finally converging into a surging trend.
The second is the sign of temperature. When the ice exists, its temperature is always below freezing point, and the surrounding air is also cold. When ice melts, it needs to absorb heat to help the phase change, so the temperature in the nearby area rises slightly. When the ice melts, the water temperature gradually rises, and it interacts with the air temperature, and eventually tends to be similar.
Furthermore, it is related to the difference in density. The density of ice is less than that of water, so it floats on the water surface. When ice melts, the density gradually changes from the low density of ice to the density of water. During this process, the spacing and arrangement of matter molecules change. Water molecules in ice are arranged regularly, forming a loose lattice, resulting in a low density; when ice melts into water, the molecular arrangement tends to be close and the density increases.
There is a difference in fluidity. The ice is still, like a frozen painting. And turning ice into water, it suddenly becomes agile, water gurgling, encountering obstacles, flowing with the trend, able to walk in gullies, irrigation in fields, its mobility is greatly increased, can drive sediment, sundries, etc. to move forward together, reshape the landscape on the earth, and moisturize all things.
What are the chemical properties of tellurium hexafluoride?
The genus of "Tiangong Kaiwu" is known by the element weight and the nature of all things. The chemical properties of sulfur hexafluoride should be discussed in ancient Chinese.
Sulfur hexafluoride is a colorless, odorless, non-toxic and highly chemically stable gas. Its chemical inertness is quite strong, and it is extremely difficult to chemically react with other substances under normal temperature and pressure. In this gas, the sulfur atom is in the highest oxidation state of positive hexavalent, and the fluorine atom is extremely electronegative. The bond between the two is firm, making its chemical properties extremely stable.
Looking at its reaction with common reagents, acids, bases, etc., it is difficult to change it. Taking water as an example, sulfur hexafluoride has little solubility in water and does not react with water. When it encounters strong oxidants, such as potassium permanganate, it does not react with it, which shows its stability.
Although its chemical properties are stable, it can also change under specific conditions. If high energy is applied, such as high temperature, high pressure or strong electric field, sulfur hexafluoride molecules can be excited or dissociated, and then chemical reactions can occur. And under the action of electric arcing, sulfur hexafluoride can decompose to produce a variety of compounds containing sulfur and fluorine. This property needs to be paid attention to when applying in electrical equipment.
Furthermore, sulfur hexafluoride has good thermal stability and can withstand higher temperatures without decomposition. This property makes it widely used in many fields, such as high-voltage switchgear, electrical insulation, etc. In short, the chemical properties of sulfur hexafluoride are mainly stable, but it may change under specific conditions. It is a chemical substance with unique characteristics.
What is the preparation method of tellurium hexafluoride?
The method of making six and poison-reducing tools is as follows:
Prepare all kinds of spiritual minerals first, and select those with pure texture. Such as red copper, you need to look for those with bright color and strong quality. The red copper cover is strong, and it can attract the properties of other things in the combined refining, so that it can be rigid and flexible. Also look for black gold, which is made of underground black iron, black and shiny, very tough, and can increase the damage resistance of utensils.
Then build a furnace, and the furnace system is quite exquisite. It needs to be built with fire-resistant soil, and its walls should be thick to prevent the firepower from spreading out. The shape of the furnace should be a round belly and a narrow mouth, so that the fire will gather but not disperse, and it can reach a high temperature.
Put the selected red copper, black gold and other objects into the furnace in a certain proportion. The beauty of the ratio is about success or failure. More copper makes the vessel soft, and more gold makes the vessel brittle. After repeated trials, the proper ratio can be obtained.
There is also a trick to burning a fire. At first, simmer slowly to make the objects gradually heat up and blend. Wait for the breath to feel, and then use the martial fire to urge, so that the temperature in the furnace rises sharply. At this time, the fire is raging, and the light is dazzling. Special personnel need to watch to prevent the fire from being too strong or too weak.
When all the things in the furnace melt into a liquid, the light flows, and the color is strange, it is the time for the fire to come. Quickly use special pliers to clamp it out, place it on a flat stone, and beat it with a hammer while it is not condensing. The hammering method also has rules, and the priorities and priorities need to be just right. Hit hard to shape it, and tap lightly to smooth its quality.
Repeat this repeatedly until the utensil is formed, and then quench it with water. The speed of quenching water and the temperature of the water all have a way. Timely quenching water can make the utensil hard and tough.
Wait for the utensil to cool, then polish it finely, remove its burrs, and make its surface as smooth as a mirror. At this point, the Liuhe poison-reducing utensil is complete. This utensil has both rigidity and softness, and can resist all kinds of evil poisons and protect people's safety.
What are the precautions for the use of tellurium hexafluoride?
When applying pentanoalkyne, there are a number of things to pay attention to, which must not be ignored.
First, it is related to the amount of use. Pentanoalkyne is strong, and the dosage must be accurate. If you take too much, the reaction will be too dramatic, and you may suffer accidental changes, or damage to utensils, or even endanger personal safety; if you take too little, the reaction will not meet expectations, wasting materials and effort. So when you take it, when you use it, you should use it with accurate quantity, according to the number set in the square, it is not bad.
Second, pay attention to the surrounding environment. This substance is quite sensitive to temperature and humidity. If the temperature is high, its activity will increase greatly, and the reaction rate will be rapid and difficult to control; if the temperature is low, the reaction will be slow or stagnant. The same is true of humidity. If the humidity is too high, or impurities are mixed in, it will affect the purity of the reaction. Therefore, where the operation is performed, it is advisable to choose a dry and moderate temperature place, and a temperature and humidity control device can be set to keep the environment stable.
Third, it is related to the order of operation. The order of pentane alkyne is mixed with other substances, and the order is extremely important. First place the stable material in the container, then slowly add pentane alkyne, and when adding, it must be constantly stirred to mix the two evenly, so as to ensure a smooth and orderly reaction. If the order is reversed, or the mixing is uneven, it can cause abnormalities.
Fourth, the importance of protection. Pentane alkyne has certain toxicity and corrosiveness. When operating, it is necessary to wear protective equipment, such as special clothes, gloves, masks, etc., to prevent it from touching the skin and inhaling into the lungs. And after the operation, wash your hands and face with water as soon as possible, and clean up the utensils properly. Don't be sloppy.
Fifth, how to store. Pentane alkylene should be stored in a cool, dark and well-ventilated place, away from fire and heat sources. Contain it in a special container, tightly sealed to prevent leakage. And it needs to be clearly marked to show its danger, so that everyone knows and treat it with caution.