For professionals working with chemical compounds, a thorough understanding of their properties and associated safety protocols is non-negotiable. 4-Methoxybenzoyl Chloride (CAS 100-07-2), also known as p-Anisoyl chloride, is a vital intermediate in various industrial and research applications. As a responsible supplier, it is imperative to provide detailed information regarding its characteristics and safe handling procedures. This knowledge is crucial for procurement managers and R&D scientists when making purchasing decisions and implementing laboratory practices.

Physically, 4-Methoxybenzoyl Chloride typically presents as a clear liquid or a crystalline solid, often with a faint yellow or amber hue. Its molecular formula is C8H7ClO2, with a molecular weight of approximately 170.59 g/mol. Key physical properties often cited include a melting point around 22°C and a boiling point of approximately 263°C at standard atmospheric pressure. It has a distinct, pungent odor. Its density is around 1.26 g/mL at 20°C, indicating it is denser than water.

Chemically, 4-Methoxybenzoyl Chloride is characterized by its high reactivity, primarily as an acylating agent. It is sensitive to moisture and reacts exothermically with water, producing hydrochloric acid and 4-methoxybenzoic acid. This reaction underscores the importance of storing the compound in tightly sealed containers and in a dry environment. Incompatible with strong bases and oxidizing agents, careful consideration must be given to its storage and handling in proximity to other chemicals. Its flash point is around 87.8°C, classifying it as a flammable liquid.

Safety is a paramount concern when dealing with 4-Methoxybenzoyl Chloride. Hazard symbols often include indications of corrosivity and flammability. It is known to cause severe skin burns and eye damage upon contact, and its vapors can be irritating to the respiratory tract. Therefore, appropriate personal protective equipment (PPE) is essential. This includes chemical-resistant gloves, safety goggles or a face shield, and protective clothing. When handling, it should be done in a well-ventilated area, preferably a fume hood, to minimize exposure to vapors. Emergency procedures for spills and accidental contact must be clearly established.

For businesses looking to buy 4-Methoxybenzoyl Chloride, partnering with a reputable manufacturer or supplier who prioritizes safety and provides comprehensive safety data sheets (SDS) is highly recommended. Understanding these properties and safety guidelines ensures not only the well-being of personnel but also the integrity of research and production processes. The competitive pricing and consistent availability from leading suppliers make it an accessible yet potent chemical for various applications.