What are the chemical properties of (1E) -1-chloro-3,3, 3-trifluoroprop-1-ene?

(1E) -1-chloro-3,3,3-trifluoropropane-1-ene is one of the organic compounds. Its chemical properties are unique, with alkenyl and halogen atoms, so it is the property of olefins and halogenated hydrocarbons.

The presence of alkenyl groups makes it possible to undergo an addition reaction. In case of bromine water, the π bond of the alkenyl group can be broken, and it can be added to the bromine elemental substance. Bromine atoms are added to the carbon atoms at both ends of the double bond, causing bromine water to fade. This is because the alkenyl group is electron-rich and vulnerable to electrophilic attack.

And because of its halogen atoms, substitution reactions can occur under basic conditions. If co-heated with an aqueous solution of sodium hydroxide, the halogen atom can be replaced by a hydroxyl group to form a corresponding alcohol. In this reaction, the hydroxyl negative ion acts as a nucleophilic reagent to attack the carbon atom connected to the halogen atom, and the halogen atom leaves to complete the substitution.

In addition, the fluorine atom of (1E) -1-chloro-3,3,3-trifluoropropane-1-ene gives the molecule certain stability and special physical properties. The fluorine atom has a large electronegativity, which affects the distribution of the molecular electron cloud and affects its physical properties such as boiling point and solubility. And because of its special structure, it is often used as a synthetic intermediate in the field of organic synthesis to build more complex organic molecular structures, and has potential application value in many fields such as materials science and medicinal chemistry.

What are the physical properties of (1E) -1-chloro-3,3, 3-trifluoroprop-1-ene?

(1E) -1-chloro-3,3,3-trifluoropropene, this physical property is one of the hot topics in current chemical research. Its properties are unique. Under room temperature and pressure, it is a colorless gas with a slight ether odor, and the smell is slightly peculiar.

Looking at its boiling point, it is about -19.5 ° C. Such a boiling point makes this substance highly volatile into a gaseous state at common ambient temperatures, just like light smoke and easy to disperse. The melting point is -151.3 ° C. The extremely low melting point indicates that it needs to be able to condense into a solid state in an extremely cold environment, just like a frost on a cold night, requiring extreme cold to form.

Furthermore, its density is slightly heavier than that of air, and it seems to sink in the air, like a stone entering water. It is slightly soluble in water, just like the difficulty of oil and water, but it can be miscible with many organic solvents, such as alcohols, ethers, etc., just like water emulsion.

This substance has good stability and is not easy to decompose on its own or react with common substances under normal conditions. However, in case of hot topics or open flames, it can cause violent reactions or even explosions. Therefore, when storing and using, it is necessary to be cautious, avoid fire and heat, and strictly abide by the procedures to prevent unexpected changes.

What are the main uses of (1E) -1-chloro-3,3, 3-trifluoroprop-1-ene?

(1E) -1 -chloro-3,3,3-trifluoropropane-1-ene, often known by its English abbreviation HFO-1234ze (E). This substance is mainly used in a wide range of applications and has important applications in many fields.

In the refrigeration industry, it can be called an emerging environmentally friendly refrigerant. In the past, traditional refrigerants such as chlorofluorocarbons, although they had good cooling effect, were very destructive to the ozone layer and had a high greenhouse effect potential. And HFO-1234ze (E) ozone layer destruction potential value is zero, greenhouse effect potential value is also very low, greatly in line with the current environmental protection needs, become the ideal choice to replace traditional refrigerants in the refrigeration field, whether it is household air conditioning, or large commercial refrigeration equipment, are emerging.

In the field of foaming agents, it also shows extraordinary value. During the manufacturing process of foam materials, traditional foaming agents release substances that damage the atmospheric environment. HFO-1234ze (E), as a new type of foaming agent, not only has excellent environmental performance, but also can make foam materials have good heat insulation, sound insulation and other properties, so it is widely used in building insulation, packaging materials and many other aspects.

In addition, in the field of fire extinguishing, HFO-1234ze (E) also has a place. Because of its good fire extinguishing efficiency and little harm to the environment and human body, it can be used as a clean gas fire extinguishing agent. It plays a key role in fire extinguishing in some places with strict environmental requirements, such as data centers, libraries, museums, etc., effectively extinguishing fires while minimizing damage to the surrounding environment and equipment.

What are the preparation methods of (1E) -1-chloro-3,3, 3-trifluoroprop-1-ene?

The preparation method of (1E) -1-chloro-3,3,3-trifluoropropene is particularly important. There are three methods, and let me tell you one by one.

One of them is the halogenation dehalogenation method. This is a suitable halogenated hydrocarbon as the starting material, and the first halogenation reaction makes the molecular structure change and introduces specific halogen atoms. Then the step of dehalogenation is performed, and the reaction conditions, such as temperature, pressure, and catalyst selection, are carefully adjusted. Too high or too low temperature may affect the rate of the reaction and the purity of the product; improper pressure will also cause the reaction to deviate from the expected path; and the quality of the catalyst depends on whether the reaction can be carried out efficiently. Through these two steps, (1E) -1 -chloro-3,3,3 -trifluoropropene can be prepared.

The second is olefin addition method. Select the appropriate olefin to react with the reagents containing fluorine and chlorine. In this process, the stereochemistry of the reaction needs to be controlled. Due to different reaction conditions, the configuration of the product may vary. At the same time, the ratio of reagents must also be accurate. Too much or too little may lead to the occurrence of side reactions and affect the formation of the target product. In addition, the pH of the reaction environment and other factors also have a significant impact on the reaction process and need to be treated with caution.

The third is the isomerization of halogenated olefins. Using specific halogenated olefins as raw materials, by changing the reaction conditions, such as adding specific isomerization catalysts, or adjusting the temperature, etc., the chemical bonds in the molecules are rearranged to achieve isomerization, resulting in (1E) -1-chloro-3,3,3-trifluoropropylene. In this process, the activity and selectivity of the isomerization catalyst are required to be quite high, and the temperature regulation needs to be extremely fine to ensure that the isomerization reaction proceeds in the desired direction.

(1E) -1-chloro-3,3, 3-trifluoroprop-1-ene What are the precautions during use?

(1E) -1-chloro-3,3,3-trifluoropropane-1-ene is a special chemical substance. In the process of use, many matters should be paid attention to.

Bear the brunt and be safe to the extreme. This substance may be dangerous to a certain extent, and safety procedures must be strictly followed when exposed. The operation field needs to be well ventilated to prevent it from accumulating and causing danger. If it accidentally touches the skin or eyes, rinse with plenty of water immediately and seek medical attention immediately.

In addition, its chemical properties also need to be carefully investigated. Because it contains chlorine and fluorine atoms, its chemical activity may be unique. In use, avoid contact with incompatible substances to prevent violent chemical reactions, explosion or formation of harmful products.

Storage is also critical. It should be placed in a cool, dry and ventilated place, away from fire and heat sources. At the same time, it should be strictly sealed to prevent leakage and deterioration.

Utensils using this substance should be properly cleaned and maintained after use. Ensure that there is no residue, so as not to affect subsequent use, and to prevent corrosion damage to the appliance.

In conclusion, during the use of (1E) -1-chloro-3,3,3-trifluoropropylene-1-ene, a rigorous and prudent attitude should be maintained, paying attention to safety, chemical properties, storage and appliance handling, etc., to ensure the smooth use process.