[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods of n-butyl acetate, n-butyl acetate cas No.

Properties of n-butyl acetate

n-Butyl acetate (Butyl Acetate) is an organic compound with the chemical formula C6H12O2. It is a colorless transparent liquid with a sweet fruity aroma. It has a boiling point of 126.1°C and a density of about 0.88g/cm³. It has low solubility in water, but is miscible with many organic solvents. n-Butyl acetate is volatile, flammable, has a flash point of 22°C, and forms an explosive mixture when a certain concentration is reached in air. Its viscosity and surface tension are low, which makes it show good dispersion and fluidity in coatings, detergents and other products.

Application of n-butyl acetate

N-butyl acetate is mainly used as a solvent and is widely used in industries such as coatings, inks, adhesives and detergents. Due to its good solubility and volatility, it is an ideal solvent for the production of nitrocellulose, cellulose acetate and acrylic resins. In the coatings industry, n-butyl acetate is often used to formulate various paints, varnishes and sprays to improve the gloss and leveling of the coating. In the ink industry, it is used to dissolve the resin and adjust the viscosity of the ink. In the field of adhesives, n-butyl acetate provides excellent initial adhesion and final bond strength. n-Butyl acetate is also used to formulate products such as perfumes, cosmetics and herbicides.

Upstream Feedstock Analysis

The production of n-butyl acetate relies primarily on two upstream feedstocks: acetic acid and n-butanol. Acetic acid is an important organic acid, which is widely used in chemical, food and pharmaceutical industries. Its main production methods include methanol carbonylation and ethylene oxidation, in which methanol carbonylation is widely used because of its high yield and economic benefits. n-Butanol is a common alcohol compound, which is mainly produced by the carbonyl synthesis of propylene and the hydrogenation of ethylene. The propylene oxo process is dominant in industrial production due to its lower cost and higher selectivity.

production process analysis

The production process of n-butyl acetate mainly includes two steps: esterification reaction and distillation. In the esterification reaction, acetic acid and n-butanol react under the action of an acidic catalyst (such as concentrated sulfuric acid or sulfonic acid resin) to produce n-butyl acetate and water. This reaction is an exothermic reaction and is usually carried out with heating and stirring to increase the reaction rate and yield. The resulting mixture contains unreacted acetic acid and n-butanol, as well as by-product water, and needs to be separated and purified by rectification. In the process of distillation, n-butyl acetate is fractionated, and the unreacted acetic acid and n-butanol are recycled and reused to improve the utilization rate of raw materials and economic benefits.

Downstream Products and Applications

N-butyl acetate is an important organic solvent, and its downstream products are widely used in coatings, inks, adhesives, cleaners and other fields. In the coating industry, n-butyl acetate is used to produce high-grade furniture paint, car paint and home appliance paint, etc., which can improve the gloss, leveling and drying speed of the coating. In the ink industry, n-butyl acetate is used to produce various printing inks, which can improve the fluidity and adhesion of inks. In the adhesive industry, n-butyl acetate is used to produce various industrial and civil adhesives, which can provide excellent adhesive properties. N-butyl acetate is also used in the production of detergents, perfumes and cosmetics and other products, with a wide range of market demand and application prospects.

n-Butyl acetate storage method

Since n-butyl acetate is volatile and flammable, its storage requires special attention to safety. It should be stored in a cool, ventilated, dry warehouse, away from fire and heat sources. The warehouse shall be equipped with fire and explosion-proof facilities, such as fire extinguishers and explosion-proof lamps. N-Butyl acetate should be stored in sealed steel or aluminum containers, avoiding contact with air to prevent volatilization and oxidation. Strong vibration and impact shall be avoided during storage to prevent container breakage and leakage. During transportation and handling, the relevant regulations for the transportation of dangerous goods should be followed to ensure safe operation.

Market Prospects and Trends

With the acceleration of industrialization and urbanization, the market demand for n-butyl acetate showed a steady growth trend. Especially in the paint and ink industry, with the increasingly stringent environmental regulations and the increasing demand for high-performance products, n-butyl acetate as a low toxicity, low volatility solvent, has broad market prospects. With the progress of science and technology and the continuous improvement of production process, the production cost of n-butyl acetate is expected to be further reduced, and its market competitiveness will be further improved. In the future, with the continuous expansion of downstream applications and the development of emerging markets, the market demand for n-butyl acetate will continue to grow.

Environmental Protection and Safety Production

In the production and application of n-butyl acetate, great attention must be paid to environmental protection and safe production. Effective treatment measures for waste gas, waste water and waste residue shall be taken in the production process to prevent environmental pollution. Exhaust gas can be treated by absorption and catalytic combustion technology, waste water can be purified by biochemical treatment and physical and chemical treatment, waste residue should be properly treated or resource utilization. Safety management should be strengthened, and equipment and facilities should be checked regularly to prevent leakage and accidents. Staff training should be strengthened to improve safety awareness and operational skills to ensure safety in production and use.

Summary

As an important organic solvent, n-butyl acetate has broad application prospects and market demand. By analyzing its properties, uses, upstream and downstream raw materials, storage methods, etc., we can see the important position and development potential of n-butyl acetate in the chemical industry. In the future, with the technological progress and changes in market demand, the production and application of n-butyl acetate will face new opportunities and challenges. In order to achieve sustainable development, we must pay attention to environmental protection and safe production, constantly optimize the production process, improve product quality and market competitiveness.