What regulatory guidelines apply to 4-Chlorobenzenesulfonic acid (CAS: 98-66-8)?

4-Chlorobenzenesulfonic acid (CAS: 98-66-8) falls under the classification of a hazardous chemical under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). It is subject to specific regulations such as REACH in the European Union, which requires registration, evaluation, authorization, and restriction of chemicals. Additionally, the U.S. Food and Drug Administration (FDA) and Environmental Protection Agency (EPA) have specific guidelines for the handling, labeling, and disposal of this compound to ensure worker safety and environmental protection.