[Chemical Knowledge]：Ethyl methacrylate properties, uses, upstream and downstream raw materials, storage methods, methyl methacrylate technical instructions.

Properties of ethyl methacrylate

Ethyl methacrylate (Ethyl Methacrylate, EMA) is a colorless transparent liquid with a pungent odor. Its molecular formula is C6H10O2 and its molecular weight is 114.15g/mol. EMA has low viscosity, high fluidity, volatile and other physical properties. It has a boiling point of about 117°C, a flash point of 15°C and a density of 0.917g/cm³. Because of the ester group contained in its molecular structure, it has good solubility in different solvents, especially in organic solvents. In terms of chemical properties, the ester group of EMA is easy to participate in polymerization reactions to form high molecular polymers, which makes it widely used in many industrial fields.

Ethyl methacrylate use

EMA is widely used in industry, mainly in the following areas:

1. Coatings and Resins EMA is commonly used in the production of various coatings and resins. Its high volatility and good film-forming properties make it an important raw material for the production of high-performance coatings. It can enhance the adhesion, hardness and durability of the coating.

2. Adhesive :EMA is a key raw material for the manufacture of high-performance adhesives, especially in the production of pressure-sensitive adhesives. It can provide excellent bond strength and durability.

3. Plastics and rubber: In the plastics and rubber industry, EMA is often used as a co-monomer to co-polymerize with other monomers to improve the physical properties and chemical stability of materials.

4. Textile auxiliaries :EMA can also be used as a finishing agent for textiles to improve the softness and abrasion resistance of fibers.

Upstream raw materials

The upstream raw materials for the production of ethyl methacrylate mainly include methacrylic acid (Methacrylic Acid, MAA) and ethanol. Methacrylic acid is obtained by a series of complex chemical reactions of raw materials such as acrylonitrile (Acrylonitrile) or isobutylene (Isobutylene). In the specific production process, it is necessary to synthesize EMA from methacrylic acid and ethanol under the action of acidic catalyst through esterification reaction.

1. Methacrylic acid: It is the main precursor of ethyl methacrylate. The quality and purity of methacrylic acid directly affect the quality of the final product EMA.

2. Ethanol: As a solvent and reactant, the choice and purity of ethanol also have an important influence on the synthesis of EMA. Absolute ethanol is typically used to ensure efficient progress of the reaction.

Downstream Products

The downstream products generated in the reaction of ethyl methacrylate are widely used in various fields. Major downstream products include:

1. Acrylic paint: through polymerization reaction, EMA can be converted into acrylic paint, which is used in construction, automobile, ship and other industries, with excellent weather resistance and decoration.

2. Polymethacrylate (PMMA) :EMA is an important monomer for the production of PMMA (organic glass). PMMA has the characteristics of high transparency, impact resistance and good weather resistance, and is widely used in optical lenses, automobile windshields, advertising light boxes, etc.

3. Medical materials :EMA and its polymers have important applications in the medical field, such as dental filling materials, bone cements, etc. They are widely accepted due to their good biocompatibility.

Methyl acrylate storage method

Since EMA is a volatile and flammable chemical, it requires special attention during storage:

1. Sealed storage should be stored in a closed container, avoid contact with air, to prevent volatilization and oxidation.

2. Low temperature storage: The storage temperature should be controlled at a low level to avoid high temperature environment to prevent spontaneous combustion or decomposition.

3. Good ventilation: The storage area should be well ventilated to avoid the accumulation of gases to form explosive mixtures.

4. Fire prevention measures: the storage area should be equipped with fire prevention facilities to avoid open flames and high heat sources, and the storage containers should have anti-static measures.

5. Keep away from oxidizing agents: EMA should avoid contact with strong oxidizing agents to prevent chemical reactions from causing hazards.

Conclusion

Ethyl methacrylate is an important chemical raw material with wide application prospect. From its physical and chemical properties, use, upstream and downstream raw materials to storage methods, every link is crucial. In industrial applications, through reasonable production and storage management, its application value can be maximized while ensuring safety during production and use. With the continuous progress of science and technology, the application potential of EMA in new materials and new processes will be further explored, bringing more development opportunities for related industries.