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Cyclohexanone chemical is an organic compound, CAS 108-94-1, with the chemical formula C6H10O. It is a saturated cyclic ketone containing a carbonyl carbon atom in a hexagonal ring. A colorless and transparent liquid with a earthy odor, containing trace amounts of phenol, it has a mint flavor. Impurities are light yellow in color and develop into impurities over time, ranging from water white to grayish yellow, with a strong pungent odor. Mixing with air has the same explosive polarity as open chain saturated ketones. It is mainly used as an organic synthesis raw material and solvent in industry, for example, it can dissolve nitrocellulose, coatings, paints, etc.
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Chemical Formula |
C6H10O |
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Exact Mass |
98.07 |
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Molecular Weight |
98.15 |
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m/z |
98.07 (100.0%), 99.08 (6.5%) |
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Elemental Analysis |
C, 73.43; H, 10.27; O, 16.30 |
Cyclohexanone chemical is an important organic compound with a wide range of applications.
(1) Coatings and paints
Due to its good solubility and volatility, it is often used as a solvent for coatings and paints. In the coating industry, various resins, pigments, and fillers can be effectively dissolved to form a uniform and stable coating system. At the same time, its moderate evaporation rate helps the coating to dry and cure quickly, improving the hardness and glossiness of the coating.
(2) Ink
It also plays an important role in ink manufacturing. It can act as a solvent to help dissolve pigments and resins in ink, forming a uniform and delicate ink system. In addition, the flowability and drying speed of the ink can be adjusted to exhibit good printing performance and adhesion during the printing process.
(3) Adhesive
It is also commonly used in the manufacturing of adhesives. It can act as a solvent to help dissolve the resin and curing agent in the adhesive, forming a uniform adhesive system. At the same time, it can also improve the wetting and permeability of the adhesive, enhance the bonding force between the adhesive and the adherend.
(4) Cosmetics
In the cosmetics industry, it is also used as a solvent. It can dissolve oils, fragrances, and other active ingredients in cosmetics, forming a uniform and stable cosmetic system. In addition, it can also improve the permeability and absorption of cosmetics, making them easier for the skin to absorb and utilize.
(5) Other solvent applications
In addition to the above applications, it can also be used as various industrial solvents such as dyes, cleaning agents, lubricants, degreasers, etc. It can dissolve various organic and inorganic substances and has a wide range of applicability.
(1) Nylon
It is an important intermediate for the production of nylon. Caprolactam, the precursor material of nylon, can be prepared through chemical reactions such as oxidation and ammonification of cyclohexanone. Caprolactam can be polymerized to obtain nylon fibers and nylon resin. Nylon is a widely used synthetic fiber and engineering plastic with excellent wear resistance, tear resistance, and chemical stability.
(2) Caprolactam
Caprolactam is a product of cyclohexanone oxidation and an important raw material for the production of nylon. Caprolactam can be polymerized to produce different types of nylon products such as nylon 6 and nylon 66. These nylon products have a wide range of applications, such as fibers, films, pipes, gears, bearings, etc.
Application as spice and essence
It also has important applications in the spice industry. It can be used as a raw material for the synthesis of various spices and essence. Through chemical reactions, compounds with different fragrances can be prepared, such as vanillin, benzaldehyde, etc. These compounds are widely used for flavoring and seasoning in products such as food, beverages, tobacco, cosmetics, etc.
Application as a pharmaceutical intermediate
It can also be used for synthesizing certain drugs and drug intermediates. For example, cyclohexene acetonitrile can be obtained by condensing with cyanoacetic acid to obtain cyclohexene cyanoacetic acid, and then undergoing elimination, decarboxylation, and other reactions. Cyclohexene acetonitrile can be hydrogenated to obtain cyclohexene ethylamine. Cyclohexeneethylamine is an intermediate of drugs such as cough medicine, trimethoprim, etc., and has important medicinal value.
(1) Cleaning agent
It is also commonly used as a cleaning agent in the industrial and automotive industries. It can dissolve and remove various oils, dirt, and sediments, keeping equipment and surfaces clean and smooth. In addition, it can also be used as a metal degreaser to remove grease and dirt from metal surfaces, improve metal adhesion and corrosion resistance.
(2) Organophosphorus insecticides
It can also be used as an excellent solvent for organic phosphorus insecticides and other pesticides. It can dissolve and disperse the active ingredients in pesticides, improve the solubility and dispersibility of pesticides, thereby enhancing the insecticidal effect and stability of pesticides.
(3) Aviation lubricating oil
It can also be used as a viscous solvent for piston type aviation lubricants. It can adjust the viscosity and fluidity of lubricating oil, allowing it to maintain good lubrication performance at low temperatures. In addition, cyclohexanone can improve the antioxidant and corrosion resistance of lubricating oil, extending the service life of lubricating oil.
(4) Wood coloring and painting
Cyclohexanone can also be used for coloring and painting wood. It can serve as a solvent and diluent for wood coatings, helping the coating to adhere evenly to the surface of wood. At the same time, it can also improve the permeability and curing speed of the coating, making the surface of the wood smoother, harder, and more durable.
(5) Other applications
In addition to the above applications, it can also be used to prepare various chemical products such as coatings, inks, resins, rubber, plastics, etc. In addition, cyclohexanone can also be used as an experimental reagent and solvent in various chemical reactions and laboratory research.
Cyclohexanone is an organic compound with a wide range of applications and significant economic value. It can be used as solvent, synthetic intermediate, perfume and essence, pharmaceutical intermediate and other purposes. At the same time, safety issues should also be taken into account during use, and relevant safety regulations and operating procedures should be strictly followed. With the continuous advancement of technology and the acceleration of industrialization, the application fields of cyclohexanone will become more extensive and in-depth. In the future, we need to continue to strengthen the research and application of cyclohexanone, and promote its development towards a more efficient, environmentally friendly, and sustainable direction.
There are indeed various methods for synthesizing cyclohexanone chemical, including cyclohexanol oxidation, phenol hydrogenation, and cyclohexane liquid-phase oxidation. The following is a detailed explanation of these synthesis methods:
Cyclohexanol oxidation method
The cyclohexanol oxidation method is one of the most commonly used methods for synthesizing cyclohexanone. In this process, cyclohexanol undergoes oxidative dehydrogenation reaction in the presence of a catalyst to produce cyclohexanone.
catalyzer:
Common catalysts include zinc iron catalysts, copper catalysts (such as CuO), etc. These catalysts can reduce the activation energy of the reaction and promote the conversion of cyclohexanol to cyclohexanone.
Hydrogen peroxide and sodium tungstate can also be used as oxidants, but in comparison, they may not be the most mainstream catalyst choices.
Reaction conditions:
The reaction is usually carried out at higher temperatures, such as 400~500 ℃, to ensure sufficient reaction rate and conversion rate.
The pressure conditions may vary depending on the specific process, but generally need to be carried out within a certain pressure range to maintain the stability and efficiency of the reaction.
advantage:
The process has fewer side reactions, easy operation, high yield, and is relatively safe.
Phenol hydrogenation method
The phenol hydrogenation method is also an important method for synthesizing cyclohexanone. In this method, phenol is hydrogenated to produce cyclohexanone under the action of a catalyst.
catalyzer:
Common catalysts include precious metal catalysts such as PdCN and Ni/CMK3. These catalysts have high catalytic activity and can promote the hydrogenation reaction of phenol.
Reaction conditions:
The reaction is usually carried out at a certain temperature and pressure to ensure sufficient reaction rate and selectivity.
As a reducing agent, the flow rate and pressure of hydrogen have a significant impact on the reaction rate and selectivity.
Process improvement:
The early phenol hydrogenation method was divided into two steps: the first step involved the hydrogenation of phenol to produce cyclohexanol, and the second step involved the dehydrogenation of cyclohexanol to produce cyclohexanone. Later, a new process for synthesizing cyclohexanone by one-step hydrogenation was developed, which improved production efficiency and product quality.
Advantages and limitations:
The cyclohexanone produced by one-step hydrogenation of phenol has good quality and high safety.
However, due to the high price of phenol and the use of precious metal catalysts, the production cost of cyclohexanone is relatively high, which limits the application of this process to some extent.
Other synthesis methods
In addition to the three main synthesis methods mentioned above, cyclohexanone chemical can also be synthesized through other methods such as cyclohexene oxidation, chloroaniline/chloronitrobenzene method, molecular sieve catalytic oxidation method, metal catalytic oxidation method, and non-metal catalytic oxidation method. These methods each have their own characteristics, but may not be the most mainstream or commonly used synthesis methods compared to others.
Adverse reactions
Cyclohexanone Chemical, as a commonly used organic solvent and chemical intermediate, is widely used in industrial production, but its adverse reactions need to be taken seriously. The following are the main adverse reactions and precautions of cyclohexanone:
Health hazards
acute toxicity
High concentration vapor can irritate the respiratory tract, causing coughing, difficulty breathing, headache, dizziness, nausea, and even blurred consciousness or coma. Long term exposure may lead to chronic respiratory diseases; Skin contact may cause dryness, defatting, erythema, itching, and even dermatitis or chemical burns to the skin; Eye contact can irritate the conjunctiva and cornea, causing tearing, pain, photophobia, and in severe cases, corneal damage; Ingestion can cause burning sensations in the mouth, throat, esophagus, and stomach, accompanied by nausea, vomiting, abdominal pain, and even central nervous system suppression.
chronic toxicity
Long term exposure may damage the liver, kidneys, and nervous system, leading to abnormal liver function, tubular damage, or peripheral neuropathy (such as numbness and weakness in the hands and feet). Animal experiments have shown that cyclohexanone may have reproductive toxicity, affecting fertility or fetal development.
sensitization
Some individuals may be allergic to cyclohexanone and may develop rashes, asthma, or allergic rhinitis after repeated exposure.
Environmental hazards
Aquatic toxicity
Cyclohexanone is toxic to aquatic organisms such as fish and algae, and may disrupt the ecological balance of water bodies.
Soil pollution
Long term leakage or improper treatment may lead to a decrease in soil microbial activity, affecting plant growth.
Bioaccumulation
Although not easily accumulated in organisms, high concentration exposure may still transmit risks through the food chain.
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