2,2',5,5'-Tetrachloro-4,4'-biphenyldiamine(CAS: 15721-02-5)

2,2',5,5'-Tetrachloro-4,4'-biphenyldiamine is a white crystalline solid with a molecular weight of 409.04 g/mol. It has a low solubility in water but is more soluble in organic solvents such as ethanol and acetone. The compound is relatively stable under normal conditions but can react with reducing agents. It is not flammable and has a melting point of 208-209°C.

2,2',5,5'-Tetrachloro-4,4'-biphenyldiamine is usually synthesized via the condensation of 2,5-dichlorobiphenyl with hydrazine hydrate. This process generally involves the use of anhydrous conditions and a suitable catalyst such as p-toluenesulfonic acid (PTSA) to improve yield and selectivity. The product is then purified by recrystallization.

2,2',5,5'-Tetrachloro-4,4'-biphenyldiamine is used in the pharmaceutical industry for the synthesis of certain intermediates. It is also utilized in the polymer industry for the production of certain types of plastics and resins. Additionally, it has applications in the semiconductor industry for etching agents and in the field of sensors for its specific reactivity with certain chemical species.

When handling 2,2',5,5'-Tetrachloro-4,4'-biphenyldiamine, it is crucial to wear appropriate personal protective equipment (PPE) including gloves, goggles, and a lab coat. Work should be carried out in a well-ventilated area or a fume hood to prevent inhalation. Spills should be cleaned up using appropriate absorbent materials, and the area should be thoroughly washed down. This compound should be stored in a cool, dry place away from moisture and direct sunlight. Always consult the Material Safety Data Sheet (MSDS) for specific handling instructions.