4-Chloro-3-(chlorosulfonyl)-5-nitrobenzoic acid(CAS: 22892-95-1)

4-Chloro-3-(chlorosulfonyl)-5-nitrobenzoic acid is a crystalline solid with a molecular weight of approximately 334.01 g/mol. It is slightly soluble in water but more soluble in organic solvents like ethanol and acetone. Chemically, it is highly reactive due to the presence of the nitro and sulfonyl halide groups, which can participate in electrophilic aromatic substitution and nucleophilic substitution reactions.

4-Chloro-3-(chlorosulfonyl)-5-nitrobenzoic acid is commonly synthesized through a multistep process involving nitration of 4-chlorobenzoic acid followed by chlorosulfonation of the resulting nitro derivative. This process requires careful control of reaction conditions to achieve high selectivity and yield. Commonly used reagents include nitric acid and sulfur trioxide, with the reaction typically carried out in the presence of a sulfuric acid catalyst.

4-Chloro-3-(chlorosulfonyl)-5-nitrobenzoic acid is used in the pharmaceutical industry for the synthesis of certain drugs, in the polymer industry for the modification of polymer properties, and in the semiconductor industry for the fabrication of electronic components. It also finds applications in the production of sensors and other advanced materials.

When handling 4-Chloro-3-(chlorosulfonyl)-5-nitrobenzoic acid, it is essential to use appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work should be carried out in a well-ventilated fume hood to minimize exposure to fumes and aerosols. Spills should be cleaned up using appropriate absorbent materials and disposed of according to local regulations. Always refer to the Safety Data Sheet (SDS) for detailed handling instructions and emergency procedures.