Ethyl 3-hydroxybutyrate (CAS 5405-41-4)： What You Need to Know About This Compound

Abstract

This article provides a comprehensive overview of Ethyl 3-hydroxybutyrate (CAS 5405-41-4), a compound that has garnered attention for its various applications and potential health benefits. The article delves into the chemical properties, synthesis methods, uses, safety considerations, and regulatory status of this compound, offering readers a detailed understanding of its significance in both scientific research and industrial applications.

Introduction to Ethyl 3-hydroxybutyrate (CAS 5405-41-4)

Ethyl 3-hydroxybutyrate, also known as ethyl 3-hydroxybutanoate, is a chemical compound with the formula CH3CH2CH(OH)COOCH2CH3. It is a derivative of 3-hydroxybutanoic acid and belongs to the class of esters. This compound is of interest due to its diverse applications, including its use as a flavoring agent, a solvent, and a precursor in the synthesis of other chemicals. In recent years, it has also been studied for its potential role in medical treatments and as a biofuel.

Chemical Properties

Ethyl 3-hydroxybutyrate is a colorless liquid with a characteristic fruity odor. It has a melting point of approximately -60°C and a boiling point of around 164°C. The compound is soluble in organic solvents such as ethanol, acetone, and ether but is only slightly soluble in water. Its molecular weight is 116.15 g/mol, and it has a molecular formula of C6H12O3. The presence of the hydroxyl group (-OH) and the carboxylate group (-COO-) in its structure contributes to its chemical reactivity and potential applications.

Synthesis Methods

The synthesis of ethyl 3-hydroxybutyrate can be achieved through various methods, including the esterification of 3-hydroxybutanoic acid with ethanol. This process typically involves the reaction of the carboxylic acid with an alcohol in the presence of a catalyst, such as sulfuric acid or hydrochloric acid. Another method involves the reaction of 3-hydroxybutanal with ethyl chloroformate, which leads to the formation of the ester. These synthetic routes are well-established and have been used for the production of ethyl 3-hydroxybutyrate on an industrial scale.

Applications

Ethyl 3-hydroxybutyrate finds applications in several industries. It is used as a flavoring agent in food and beverages, where it imparts a fruity taste and aroma. In the pharmaceutical industry, it serves as a solvent for certain medications and as a precursor for the synthesis of other compounds. Additionally, ethyl 3-hydroxybutyrate has been explored as a potential biofuel, with research indicating its potential for use in fuel cells and as a renewable energy source.

Safety Considerations

As with any chemical compound, safety considerations are crucial when handling ethyl 3-hydroxybutyrate. The compound is classified as a hazardous substance, and appropriate precautions should be taken during its storage, handling, and use. It is flammable and can release toxic fumes when heated to decomposition. Exposure to high concentrations of the vapor can cause irritation to the respiratory system, eyes, and skin. Therefore, it is essential to use appropriate personal protective equipment and ensure proper ventilation in areas where the compound is used.

Regulatory Status

The regulatory status of ethyl 3-hydroxybutyrate varies by country and region. In the United States, the compound is regulated under the Toxic Substances Control Act (TSCA) and is subject to reporting requirements. In the European Union, it is classified as a substance of very high concern (SVHC) under the REACH regulation. These regulations aim to ensure the safe use of the compound and minimize its potential environmental and health risks.

Conclusion

Ethyl 3-hydroxybutyrate (CAS 5405-41-4) is a versatile compound with a range of applications in various industries. Its chemical properties, synthesis methods, uses, safety considerations, and regulatory status are all important aspects to consider when dealing with this compound. As research continues to explore its potential in medical treatments and as a biofuel, a comprehensive understanding of ethyl 3-hydroxybutyrate is crucial for its safe and effective use.

Keywords

Ethyl 3-hydroxybutyrate, CAS 5405-41-4, chemical properties, synthesis methods, applications, safety considerations, regulatory status