What regulatory guidelines apply to 1-Methyl-4-(methylsulfanyl)benzene (CAS: 623-13-2)?

1-Methyl-4-(methylsulfanyl)benzene (CAS: 623-13-2) is classified under the Globally Harmonized System (GHS) as a hazardous substance, primarily due to its flammability and potential for skin and eye irritation. Manufacturers and importers must comply with REACH regulations in the European Union, ensuring no harmful substances are present above certain concentrations, and must provide Safety Data Sheets (SDS) to downstream users. In the USA, the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) require proper labeling and handling to prevent harm to human health and the environment.