2,4,5,6-Tetrafluoroisophthalic acid(CAS: 1551-39-9)

2,4,5,6-Tetrafluoroisophthalic acid is a white crystalline solid with a high melting point. Its molecular weight is approximately 262.06 g/mol. It is sparingly soluble in water but soluble in common organic solvents. Chemically, it shows moderate stability with respect to hydrolysis and is reactive towards amines, forming amides. It is also known for its strong acidity, which allows it to react with bases to form salts.

2,4,5,6-Tetrafluoroisophthalic acid is typically synthesized by the fluorination of isophthalic acid. This process often involves the use of Lewis acids as catalysts, such as aluminum chloride or boron trifluoride. The reaction is carried out in an inert solvent like dichloromethane at low temperatures. The yield can be high, and the product is isolated by crystallization from the reaction mixture.

2,4,5,6-Tetrafluoroisophthalic acid is used in various industries. In pharmaceuticals, it serves as a precursor for the synthesis of fluorinated drugs. In polymers, it is used to manufacture high-performance polyesters and other fluorinated polymers. It also finds applications in the sensor and semiconductor industries, particularly in the fabrication of fluorinated materials with unique electronic properties.

When handling 2,4,5,6-Tetrafluoroisophthalic acid, appropriate personal protective equipment (PPE) should be worn, including gloves, safety goggles, and a laboratory coat. The substance should be handled in a well-ventilated area or a fume hood to avoid inhalation of dust or fumes. Spills should be carefully cleaned up using appropriate methods, and the area should be thoroughly ventilated. Safety data sheets (SDS) should be consulted for detailed emergency response information and storage conditions.