Gamma-Butyrolactone

Chemical Name: Gamma-Butyrolactone

CAS NO.：96 - 48 - 0

Appearance and Properties: Colorless transparent liquid with a faint characteristic odor. It has good miscibility with water, alcohols, esters, and most organic solvents. GBL is a stable compound under normal conditions, but it can react with strong acids, bases, and some reducing agents.

Solvency: As a polar aprotic solvent, GBL has excellent solvency for a wide range of substances, including polymers, resins, and many organic compounds. It can dissolve materials such as polyvinyl chloride, polyamide, and cellulose derivatives effectively, making it an important solvent in various industrial processes.

Reactivity: GBL can participate in many chemical reactions. For example, it can be hydrolyzed in the presence of acids or bases to form 4-hydroxybutyric acid, and it can also be used as a raw material for the synthesis of various chemicals through reactions such as amination and alkylation.

High Boiling Point and Low Volatility: With a relatively high boiling point, GBL has low volatility. This property helps to maintain the stability of the system during high-temperature processes and reduces solvent loss, which is beneficial for industrial production with continuous operations and high - temperature requirements.

Thermal Stability: It can maintain stable performance within a certain temperature range, which allows it to be applied in industrial processes that require elevated temperatures, such as in some chemical synthesis and material processing procedures.

Chemical Synthesis Industry: GBL is widely used as an important chemical intermediate. It can be used to produce pyrrolidones, such as N-methyl - 2 - pyrrolidone (NMP) through amination reactions. In addition, it participates in the synthesis of various pharmaceuticals, pesticides, and fine chemicals. For example, it serves as a key raw material in the production of some anti - epilepsy drugs and plant growth regulators.

Lithium - ion Battery Industry: In the production of lithium - ion batteries, GBL can be used as a solvent or additive in electrolytes. Its good solubility and chemical stability help to dissolve lithium salts and other components, improving the conductivity and stability of the electrolyte. This is crucial for the performance and safety of lithium - ion batteries.

Textile and Printing Industry: As a solvent, GBL is used in the textile industry for the treatment of fibers. It can help dissolve dyes and auxiliaries, improving the dyeing efficiency and color fastness of textiles. In the printing industry, it is applied in ink formulations to adjust the viscosity and drying properties of inks, ensuring high - quality printing effects.

Paint and Coating Industry: GBL can dissolve resins, pigments, and additives in paints and coatings. It helps to form a uniform coating film, improve the film - forming properties of coatings, and enhance the adhesion and hardness of the coating. Moreover, its low volatility ensures that the coating has good stability during the application process.

Plastic Industry: In the plastic processing industry, GBL is used as a solvent or plasticizer. It can improve the processing performance of plastics, such as reducing the melting viscosity of plastics during the molding process, making it easier to form plastic products with complex shapes.

In Chemical Synthesis: When using GBL as a reaction medium or raw material, accurately control the reaction temperature, time, and the proportion of reactants according to the reaction requirements. After the reaction, recover and purify GBL through appropriate separation and purification methods for recycling, which can reduce production costs and environmental impact.

In Lithium - ion Battery Electrolyte Preparation: During the preparation of electrolytes, ensure that GBL is thoroughly mixed with other components such as lithium salts and additives. Strictly control the moisture content and impurity levels in the system to avoid affecting the performance of the electrolyte and the battery.

In the Coating Industry: When formulating coatings, adjust the amount of GBL added according to the type and performance requirements of the resin. Pay attention to the drying conditions of the coating film, and ensure that GBL can be volatilized completely without leaving residues that affect the quality of the coating film.

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