An Overview of CAS 747-36-4 Applications and Significance

Introduction

CAS number 747-36-4 refers to a chemical compound commonly known as Dimethyl carbonate (DMC). This colorless, flammable liquid is classified as a carbonate ester and possesses distinct properties that make it valuable across various industries. Its unique characteristics facilitate a wide range of applications, particularly in the fields of solvents, fuel additives, and chemical intermediates. This article delves into the significance, applications, and regulatory considerations associated with dimethyl carbonate.

Dimethyl carbonate has a molecular formula of C3H6O3 and a molecular weight of 90.08 g/mol. It is a highly polar solvent, with a dielectric constant of around 36.7, which enhances its ability to dissolve various organic compounds. The compound has a boiling point of 90.0 °C and a flash point of 24 °C, making it a relatively volatile liquid.

DMC is typically produced through the transesterification of dimethyl sulfate with urea or the reaction of carbon dioxide with methanol. The increasing emphasis on sustainability and environmental protection has led to interest in carbon dioxide as a feedstock for DMC synthesis, reflecting a growing trend toward green chemistry.

Applications of Dimethyl Carbonate

1. Solvent DMC serves as an effective solvent in numerous applications due to its good solvency properties. It is often used in the formulation of paints, coatings, adhesives, and cleaners. Its low toxicity and minimal environmental impact make it a preferred choice compared to traditional solvents like toluene or xylene.

2. Fuel Additive The automotive industry values dimethyl carbonate for its role as a fuel additive. When blended with gasoline or diesel, DMC can enhance fuel efficiency and reduce emissions. Its oxygenate properties contribute to improved combustion, making it an environmentally friendly alternative to traditional gasoline components.

3. Chemical Intermediate Dimethyl carbonate acts as a crucial intermediate in the production of various chemicals, including polycarbonate plastics, pharmaceuticals, and agricultural chemicals. For instance, it can be employed in the synthesis of methyl methacrylate, a precursor for acrylic polymers used in coatings and textiles.

4. Carbon Capture Technology DMC has gained attention in the context of carbon capture and utilization (CCU) technologies. Its ability to react with carbon dioxide to form intermediate products positions it as a potential player in mitigating environmental impacts associated with greenhouse gas emissions.

Regulatory Considerations

While dimethyl carbonate is regarded as a safer alternative to traditional solvents and chemicals, regulatory frameworks govern its use. Various agencies including the Environmental Protection Agency (EPA) and the European Chemicals Agency (ECHA) monitor the safety and environmental regulations surrounding DMC. Businesses that utilize this compound must comply with safety data sheet requirements, labeling regulations, and worker safety guidelines to minimize health risks.

Environmental Impact and Sustainability

The push for greener and more sustainable practices has sparked interest in the utilization of dimethyl carbonate as a viable replacement for more hazardous solvents and chemicals. Its biodegradability and lower toxicity levels demonstrate the potential for reducing harmful emissions and promoting safer industrial practices. As the demand for eco-friendly products continues to rise, DMC's role in sustainable chemistry is likely to expand.

Conclusion

CAS 747-36-4, or dimethyl carbonate, exemplifies the importance of innovative chemical compounds in industrial applications. With a wide array of uses ranging from solvent formulations to fuel additives, DMC is playing a pivotal role in modern chemistry. As regulatory frameworks evolve and environmental concerns gain precedence, the significance of dimethyl carbonate as a sustainable and safe chemical option will likely continue to grow. By embracing compounds like DMC, industries can move towards more environmentally responsible practices while meeting consumer and regulatory demands for safety and sustainability.