Benzene, 2-Fluoro-1-Iodo-4-Methyl-

The chemical properties of Fu 2-hydroxyl-1-yl-4-methylbenzene are very important, and I will describe them in detail today.
This compound has phenolic properties. Because it contains phenolic hydroxyl groups, it is weakly acidic. It can react with bases to form phenolic salts. For example, when it encounters sodium hydroxide, the hydrogen in the phenolic hydroxyl group is replaced by sodium, resulting in the corresponding phenolic sodium salt and water. This is a typical acid-base reaction of phenols.
Because of its benzene ring structure and aromaticity, it can undergo electrophilic substitution reactions. The electron cloud density of the benzene ring is high, which is attractive to electrophilic reagents. Taking the bromination reaction as an example, under appropriate conditions, bromine can replace the hydrogen atom on the benzene ring. Usually, the phenolic hydroxyl group is an ortho-and para-localization group, and bromine tends to be substituted in the ortho or para-position of the phenolic hydroxyl group to form o-bromo-2-hydroxyl-1-yl-4-methylbenzene or p-bromo-2-hydroxyl-1-yl-4-methylbenzene.
In addition, the phenolic hydroxyl group of this compound is easily oxidized. In case of strong oxidants, such as potassium permanganate, the phenolic hydroxyl group can be oxidized to quinones and other products. Quinones have special colors and chemical activities, and this oxidation reaction is of great significance in organic synthesis and chemical analysis.
Meanwhile, due to the presence of methyl groups attached to the benzene ring, some related reactions can occur in methyl groups. Although the activity of methyl groups is relatively low compared to phenolic hydroxyl groups, under certain conditions, such as high temperature, light or the presence of catalysts, the hydrogen on methyl groups can be replaced by halogen atoms, resulting in free radical substitution reactions.
Furthermore, there are hydrogen bonds in the 2-hydroxyl-1-yl-4-methylbenzene molecule. The hydrogen atom of the phenolic hydroxyl group can form hydrogen bonds with other atoms in the molecule, which has a great impact on its physical properties, such as increased boiling point, melting point, and increased solubility in polar solvents.
In summary, the chemical properties of 2-hydroxyl-1-yl-4-methylbenzene are rich and diverse, and they have wide application and research value in many fields such as organic synthesis, medicinal chemistry, and materials science.

2-%E6%B0%9F-1-%E7%A2%98-4-%E7%94%B2%E5%9F%BA%E8%8B%AF, its chemical formula is $C_ {2} H_ {5} SH $, also ethyl mercaptan. This substance has not been studied in "Tiangong Wuwu", but according to the ancient saying, its physical analysis can be as follows:
Ethyl mercaptan is often used as a liquid that is easy to change color, and it smells very bad. Its odor is strong, and a small amount can also be used by people. Because of its good performance, the molecule is easy to dissipate in the air, and the human nose is sensitive to this molecule.
Its boiling temperature is low, 36.2 ℃. The molecular force is mainly due to the weak van der force, so it only takes a small amount of energy to make the molecule in the liquid phase beam, which is also one of the reasons for its ease.
Ethanethiol has a lower density than water, < 0.84 g/cm ³. If ethanethiol is mixed with water, it will float on water, just as oil is in water.
In terms of solubility, ethanethiol has limited solubility in water, and it is soluble in ethanol, ether, etc. Because its molecules have certain properties, the hydrophobic ethyl group has a large shadow, so it is soluble in water; and it is soluble. Due to the similar principle of miscibility, it can be well miscible.

What are the common uses of 2 - 1 - 4 - methylbenzene? This study explores the use of methylbenzene in daily and technical aspects. Methylbenzene, also known as toluene, has a wide range of uses.
The first example is that it is soluble. Toluene has good solubility and can dissolve many kinds of chemicals, such as grease, paint, ink, etc. In the printing industry, toluene is often used as a dilute material to make it easier to coat the surface of the material and improve the amount of oil. In the printing ink manufacturing, toluene is used as a solution, which can ensure the flow of the ink and make the printing effect clear and effective.
Furthermore, toluene is an important chemical raw material. A series of inverse compounds can be synthesized. For example, toluene can be used to obtain trinitrotoluene (TNT) by nitrifying and reversing it. TNT is a strong frying agent and has important uses in fields such as medicine and agriculture. Toluene can be used in raw benzoic acid. Benzoic acid and its properties are commonly used as food preservatives, which can effectively inhibit the growth of microorganisms in food and extend the shelf life of food. In addition, toluene can be obtained from benzoic acid, which is an important raw material for the synthesis of polyester (such as benzoic acid). It is widely used in various fields to form various clothing and industrial fabrics.
In the addition of gasoline, toluene also has a place. It can improve the octane number of gasoline, increase the anti-knock performance of gasoline, make gasoline flatter, and improve fuel efficiency. Therefore, methylbenzene plays an indispensable role in both work and daily life due to its many and important uses.

2-Hydroxy-1-naphthalene-4-aminobenzenesulfonic acid, often referred to as H acid, its synthesis method is not directly recorded in the ancient book "Tiangong Kaiwu", but it can be discussed in combination with chemical knowledge and ancient similar process ideas.
In ancient times, although there was no modern advanced chemical synthesis method, there was some experience in the extraction and transformation of substances. From the perspective of raw materials, the synthesis of H acid requires corresponding starting materials containing naphthalene, amino group, sulfonic acid group and other structures. Although it was difficult to precisely prepare specific structural organic substances in ancient times, analogs can be found from natural products. For example, some plants and minerals may contain certain aromatic ring structure substances, which can be tried as starting materials.
As far as the reaction process is concerned, the introduction of amino groups can be analogous to the way of preparing nitrogen-containing compounds in ancient times. When nitrogen-containing products such as nitrogen fertilizers were made in ancient times, natural nitrogen-containing substances were often used for fermentation and transformation. When synthesizing H acids, amino groups can be introduced by reacting natural nitrogen-containing substances with raw materials with aromatic ring structure under specific conditions. The introduction of sulfonic acid groups can learn from the ancient treatment of mineral acids. The ancients knew that some sulfur-containing minerals were used to make acids, or the aromatic ring raw materials could be reacted with appropriate sulfur-containing reagents in a similar acid-making environment to introduce sulfonic acid groups. The introduction of hydroxyl groups can refer to ancient operations such as oxidation and hydrolysis of substances. Some oxidation processes can introduce hydroxyl groups at suitable positions of aromatic rings, or hydrolyze and convert raw materials containing special groups to obtain hydroxyl groups
Although ancient technology is difficult to achieve the accuracy and efficiency of modern synthesis of H acids, with the help of existing raw materials and technological means, it may be possible to explore a preliminary synthesis path, laying the foundation for modern synthesis methods, and also reflecting the profound impact of ancient people's exploration of material transformation on the development of chemistry.

2-%E6%B0%9F-1-%E7%A2%98-4-%E7%94%B2%E5%9F%BA%E8%8B%AF is a highly toxic substance. When storing and transporting it, you need to pay great attention to the following things:
First, the storage place must be dry and cool. This is because the toxicity is easily affected by the temperature and humidity of the environment. If it is in a humid and warm place, it may cause its nature to change, toxicity to increase or cause other accidents. As "Tiangong Kaiwu" says, everything depends on a suitable environment, and this poison is no exception.
Second, the choice of container is extremely critical. A special sturdy and airtight container must be used to prevent leakage. This poison is violent. Once it leaks, it will cause harm to the surroundings and cause charcoal damage. The material of the selected container should be able to resist its corrosion, and the seal should be tight to ensure that there is no gap.
Third, during transportation, the speed should be stable and fast. Stable is to avoid damage to the container due to bumps and collisions; fast is to reduce the length of time it is exposed to the outside, and reduce the risk to a minimum. The escort is selected to be proficient in objects and familiar with the characteristics of poisons. Be careful to guard along the way, and there should be no slack.
Fourth, whether it is storage or transportation, special personnel should be set up to supervise. Regulators need to check it carefully every day to see if there is any abnormality. If there is any change, report it immediately for disposal without delay.
Fifth, warning signs should not be ignored. On the storage and transportation, should be conspicuously posted poison signs, so that others can see, avoid, so as to avoid innocent people accidentally touch the disaster.
In this way, in the process of storage and transportation 2-%E6%B0%9F-1-%E7%A2%98-4-%E7%94%B2%E5%9F%BA%E8%8B%AF, the risk is minimized and one party is safe.