What regulatory guidelines apply to 10H-Phenothiazine 5,5-dioxide (CAS: 1209-66-1)?

10H-Phenothiazine 5,5-dioxide (CAS: 1209-66-1) falls under the scope of the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), which includes hazardous categories such as skin and eye irritation, and sensitization. It is also subject to the European Union's Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulations. In the United States, it is regulated by the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) for environmental and safety purposes, respectively.