quinoline-3-carbonitrile

Methyl ether has specific chemical properties and is worth studying.
Methyl ether is flammable and can burn in the air under normal conditions to form carbon dioxide and water. The combustion reaction formula is as follows:\ (2CH_ {3} OCH_ {3} + 3O_ {2}\ stackrel {ignite }{=\!=\!=} {2} + 3H_ {2} O\), this reaction can release a huge amount of heat energy, so methyl ether is often used as fuel.
Methyl ether has a certain solubility. Because of its molecular structure, it can be miscible with many organic solvents such as alcohols, ethers, and acetone. However, its solubility in water is limited and only slightly soluble.
Methyl ether is also inert under certain conditions. Its carbon-oxygen bond is quite stable, and under normal conditions, it is not easy to be easily attacked by hydrolysis or other reagents. However, when it encounters strong acids and bases, it will also react. In the case of strong acids, the lone pair electrons on the oxygen atom can combine with protons to form products such as salt.
Methyl ether is still volatile. Due to its very low boiling point, about -24.9 ° C, it easily evaporates from a liquid state to a gaseous state at room temperature and pressure, and escapes into the air.
In addition, the chemical activity of methyl ether is closely related to the molecular structure. Its molecules are symmetrical structures, and methyl groups are connected to oxygen atoms, which makes its chemical properties different from alcohols and alkanes. Due to the existence of oxygen atoms, methyl ether is endowed with a certain polarity, which affects its solubility, reactivity and other properties. And the force between methyl ether molecules is relatively weak, which is also the reason why its boiling point is low and volatile.

The method of making acetyl is often used. One is the method of acetic acid and lime together. Take acetic acid (CH
) and lime (the main components are NaOH and CaO), mix them according to the proportion of, put them in a dry tube, and use alcohol. The inverse of the equation is: CH

The method of oxidation of ethanol. Take ethanol (C < H < OH), use or as a catalyst, and add into the air. Ethanol is first oxidized with acetaldehyde (CH

The third is the addition of ethylene and acetic acid. Make ethylene (C < H <) OH + O < unk > $\ stackrel {Cu or Ag} {\ triangle} $2CH < unk > CHO + O < unk > $\ stackrel {catalytic} {\ triangle} $2CH < unk > COOH. The reaction of ethylene and acetic acid is added, and the inverse formula is: C ² H + CH < unk > COOH $\ stackrel {catalytic} {\ longrightarrow} $CH < unk > COOC < unk > H, hydrolysis and other operations of ethyl acetate generated, and acetyl can also be used.

The method has its own characteristics, depending on the amount of acetyl required, the ease of raw materials, and the ease of reaction.

In "Tiangong Kaiwu", Yang Fushii-3-methyl sulfur is used in many fields.
In the field of metallurgy, methyl sulfur can be used as an auxiliary. Because of the properties of methyl sulfur, it can phase with impurities in metal ores, help it separate, and make metal purification smoother. For example, when smelting copper, an appropriate amount of methyl sulfur input can remove impurities such as sulfur and iron, improve the purity and quality of copper, and the copper casting is more sophisticated, which is beneficial in both technology and practicality.
In chemical manufacturing, methyl sulfur also has wonders. Can be used as a catalyst to speed up the process of certain chemical reactions. If specific pigments or pharmaceuticals are prepared, the participation of methyl sulfide can make the reaction conditions easier to achieve, and the product yield is higher and the quality is better. Its role is like the hand of a skilled craftsman, accurately assisting the change of chemical industry.
Furthermore, in the field of agricultural soil improvement, methyl sulfide can also play a role. Appropriate application of methyl sulfide-containing substances can adjust soil pH, improve soil structure, and make soil more suitable for plant root growth. Plant roots can better absorb nutrients from the improved soil, so as to thrive, improve the yield and quality of crops, and benefit people's livelihood.
In addition, in the field of medicine, methyl sulfide can be used as medicine after ingenious extraction and compatibility. It has a unique pharmacology, which can relieve pain or assist in the treatment of certain diseases. Although the specific curative effect varies depending on the formula and disease, its potential value in medicine cannot be underestimated.
From this perspective, methylsulfide is used in metallurgy, chemical industry, agriculture, medicine and other fields like stars shining at night, each showing its ability, adding help to various affairs and promoting the development and progress of the industry.

In today's Guanyang flintlock, the price in the city is not constant, and it changes with the supply and demand of the world. In the past, the world was flat, all kinds of industries were prosperous, and the use of silk was wide, and its price was also high. Each horse was worth dozens of gold. The rich merchants competed to buy it, thinking it was a rare commodity.
However, the years pass by, and current events change. Either because other things replaced it, or because the number of producers increased, the demand for silk gradually decreased, and its price fell. Up to now, the price of silk in the city is only a few gold per horse. There are also those of good quality, refined by skilled craftsmen, supplemented by rare dyes, with gorgeous patterns, and their price is slightly higher, up to more than ten gold.
The changes in the market are still unpredictable. Sometimes there are natural disasters, silk products are damaged, and the price rises; sometimes there are man-made disasters, business is blocked, and the price fluctuates. There are also merchants from all over the world, or hoarding, or dumping and promoting sales, all of which have a great impact on the price of silk. Therefore, it is not easy to know the exact number of silk in the city. It can only be said that the price of each horse can vary from a few gold to more than ten gold, depending on its quality, time and market conditions.

For methyl ether, the conditions for its storage are quite important. Methyl ether is active, volatile, and flammable, so it needs to be handled with caution.
To properly store methyl ether, the first ambient temperature. It should be stored in a cool place, away from heat sources and open flames. When methyl ether is heated, the vapor pressure rises, and the internal pressure of the container increases. If it encounters a hot topic, it may cause the container to break and cause danger. The ideal storage temperature should be controlled in a low range, usually not exceeding 30 degrees Celsius.
The second is storage containers. Methyl ether should be stored in pressure-resistant and sealed containers. Such containers should be able to withstand the pressure of methyl ether due to temperature changes, and have good sealing to prevent the escape of methyl ether. The commonly used containers are mostly special metal cans, which are made of strong materials and can resist corrosion, which can ensure the safe storage of methyl ether.
Furthermore, the ventilation of the storage place should not be neglected. If the methyl ether leaks, good ventilation can make it spread rapidly, reduce the concentration of methyl ether in the air, and avoid the formation of explosive mixed gases. Poor ventilation, the accumulation of methyl ether, in case of fire sources, is prone to explosion.
In addition, the storage area should be kept away from oxidants and other substances. Contact with the oxidant may cause severe chemical reactions, resulting in serious consequences such as combustion and explosion. The storage of methyl ether shall be in a cool and ventilated place, in a pressure-resistant sealed container, away from heat sources, open flames and oxidants, so as to ensure its safe storage and avoid accidents.