1,6-Dibromohexane

1,6-Dibromohexane has a wide range of main uses. From the perspective of "Tiangong Kaiwu", it can be used in many skills and things. First, in the field of organic synthesis, 1,6-dibromohexane is often the key raw material. Analogous to ancient techniques, if craftsmen want to make exquisite utensils, they need good materials. This compound is just like a good material for organic synthesis, which can build complex organic molecular structures through a series of reactions. For example, the ancient alchemists used various gold and stone medicinal materials to refine medicinal pills through clever proportions and heat control. Organic synthetic chemists also use 1,6-dibromohexane as a base, supplemented by various reagents, to control the reaction conditions and synthesize the desired organic compounds, such as some special fragrances, pharmaceutical intermediates, etc. Second, in the preparation of materials, 1,6-dibromohexane also has its uses. Ancient artisan tools, fine selection of materials can lead to good products. In material preparation, 1,6-dibromohexane can participate in polymerization reactions, etc., to prepare polymer materials with special properties. For example, in the weaving industry of ancient times, high-quality silk threads were skillfully woven into beautiful brocade. 1,6-Dibromohexane participates in the reaction, giving polymer materials unique properties, such as better flexibility, stability, etc., which are used in special packaging materials, engineering plastics, etc. Third, in the manufacture of some fine chemical products, 1,6-dibromohexane is indispensable. Fine chemicals, such as ancient micro-carving techniques, require fine operation and high-quality raw materials. This compound can be used as an intermediate to derive a variety of fine chemicals, such as special surfactants, etc., which play a role in daily chemical, textile printing and dyeing industries, just like ancient fine pigments, adding color to many products and improving their quality and performance.

There are several common methods for the synthesis of 1,6-dibromohexane: First, hexanediol is used as the starting material. The hexanediol is co-heated with hydrobromic acid. In this reaction, the alcohol hydroxyl group is replaced by the bromine atom. After the nucleophilic substitution reaction process, 1,6-dibromohexane can be obtained. The principle of the reaction is that the bromine ion in hydrobromic acid has strong nucleophilicity, which can attack the carbon atom connected to the alcohol hydroxyl group. At the same time, the hydroxyl group is combined with the proton and leaves in the form of water to achieve substitution. This method is relatively easy to obtain raw materials, and the reaction conditions are relatively mild. However, during the reaction, attention should be paid to the corrosiveness of hydrobromic acid and the temperature control of the reaction to prevent side reactions Second, it is obtained by the addition reaction of hexene and bromine elemental substance. Placing hexene in a suitable reaction vessel, slowly adding bromine elemental substance, at room temperature or slightly lower temperature, the addition reaction can occur smoothly to generate 1,6-dibromohexane. This reaction has the advantages of fast reaction rate and high yield, because the double bond of olefins has strong reactivity to bromine elemental substance. However, it is necessary to pay attention to the toxicity and volatility of bromine elemental substance. The operation should be carried out in a well-ventilated place, and the sealing performance of the reaction device is required to prevent bromine leakage. Third, using hexane as a raw material, bromohexane is generated by radical substitution reaction with hydrogen bromide under the action of light or initiator, and then by appropriate methods, such as eliminating hydrogen bromide under the action of strong alkali to generate hexene, and then adding hexene to bromine elemental, and finally preparing 1,6-dibromohexane. Although this route is a little complicated, the raw material hexane is inexpensive and has a wide range of sources. During operation, the conditions of each step of the reaction need to be precisely controlled to improve the overall synthesis efficiency.

1,6-Dibromoethane is a colorless and transparent liquid with a slightly sweet taste and is stable at room temperature and pressure. Its physical properties are as follows: - ** Appearance and Properties **: Colorless heavy liquid with a sweet smell. It is clear and translucent, like a quiet lake water, placed in a container, like a still mirror, but in fact it hides the mystery of chemistry. - ** Melting point and boiling point **: The melting point is -30.7 ° C, and the boiling point is 131.4 ° C. The melting point is quite low, just like winter ice, which turns into a liquid when it encounters a little warmth; the boiling point is relatively high, just like a tough material, which requires a higher temperature to turn it into a gaseous state. - ** Density **: The relative density (water = 1) is 2.17, which is heavier than water. If it is placed in the same container as water, it will sink steadily, like a stone sinking to the bottom. - ** Solubility **: Slightly soluble in water, soluble in most organic solvents such as ethanol, ether, chloroform, etc. In water, it can only dissolve a little, like a shy guest, unwilling to integrate too much; in organic solvents, it can blend smoothly, just like old friends reunite and be close. - ** Volatility **: Although not volatile, it will evaporate slowly in the air. In the air, like an invisible spirit, it quietly passed away, but its volatile gas also needs to be treated with caution.

1% 2C6-dibromoethane is highly toxic. When storing it, you must pay great attention to the following matters: First, the storage place must be cool and ventilated. Because 1% 2C6-dibromoethane is volatile when heated, and the steam is toxic, in a well-ventilated place, it can avoid the accumulation of steam and reduce the risk of poisoning; in a cool environment, it can reduce its volatilization rate and ensure its chemical stability. Second, it must be kept away from fire and heat sources. The material is flammable, and in case of open flames and hot topics, it is very easy to cause combustion and even explosion. Therefore, fireworks are strictly prohibited in the storage place, and electrical equipment must also meet the explosion-proof standard. Third, it should be stored separately from oxidizing agents, acids, alkalis, etc., and must not be mixed. 1% 2C6-dibromoethane is in contact with oxidizing agents or reacts violently; it can be dangerous if it interacts with acids and bases or decomposes. Fourth, the storage container must be well sealed to prevent its volatilization and leakage, polluting the environment and endangering personal safety. It is commonly stored in sealed glass bottles or metal drums, and the container should be carefully inspected before use to ensure that there is no damage or leakage. Fifth, the storage area should be equipped with corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment. Once there is a leak, it can be quickly responded to and reduce the harm. Such as sand, carbon dioxide fire extinguishers, etc., to deal with possible fires; there are adsorption materials to deal with leaking liquids. Sixth, the storage place should be clearly marked with warning signs. It is clearly indicated that the storage is highly toxic and flammable 1% 2C6-dibromoethane, so that personnel are aware of its danger and operate with extra caution.

For 1% 2C6-dibromoethane, the price of the market varies from time to time, and also varies according to quality, quantity and source. The market of the husband city is often tied to supply and demand. If there are many people who want it and there are few people who supply it, the price will rise; if the supply exceeds the demand, the price will fall. And the difficulty of its preparation, the price of the raw materials used, is also related to the price. If the raw materials are easy to obtain, the preparation technique is simple, the cost or low, and the price follows. On the contrary, the raw materials are rare and expensive, and the preparation is difficult, so the price must be high. Furthermore, the purity of its quality is also related to the price. Those with pure quality are always higher than those with complex quality. The operation of the merchant also has an impact. The reputation of the merchant is good, and the goods sold may be guaranteed, and the price may be slightly higher. The cost of transportation and the consumption of warehousing are all included in the price. Long-distance transshipment, warehousing is difficult, and the price should increase. As for the exact price, it is difficult to determine. Or it fluctuates up and down due to differences in time and place. In today's city, or it ranges from thousands to tens of thousands of dollars per ton. To know the details, when visiting merchants in various cities and consulting chemical industry operators, observing changes in current prices, and observing supply and demand, you can get a more accurate price.