4-Bromobenzenediazonium tetrafluoroborate(CAS: 673-40-5)

4-Bromobenzenediazonium tetrafluoroborate (CAS: 673-40-5) is a crystalline compound with a molecular weight of approximately 288.04 g/mol. It is sparingly soluble in water but highly soluble in organic solvents such as methanol and acetone. This compound is known for its high reactivity, particularly in coupling reactions and as a diazo reagent.

4-Bromobenzenediazonium tetrafluoroborate is typically synthesized by diazotizing 4-bromobenzenesulfonic acid in the presence of sodium tetrafluoroborate. The reaction involves the formation of the diazonium salt, which is then converted to the tetrafluoroborate salt. Common conditions include a 1:1 molar ratio of sulfonic acid to sodium tetrafluoroborate, with the use of an appropriate acid catalyst such as sulfuric acid.

4-Bromobenzenediazonium tetrafluoroborate (CAS: 673-40-5) is used in various industries, particularly in the pharmaceutical sector for the synthesis of aromatic compounds and in the manufacturing of dyes and pigments. It also finds applications in organic chemistry for coupling reactions and as a diazo reagent in analytical chemistry and sensor technology.

When handling 4-Bromobenzenediazonium tetrafluoroborate (CAS: 673-40-5), it is essential to wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. The substance should be handled in a well-ventilated area or a fume hood to minimize exposure to fumes. Spills should be handled according to the Material Safety Data Sheet (SDS) recommendations, and disposal should follow local regulations.