What regulatory guidelines apply to 1-Methyl-1-phenylhydrazine (CAS: 618-40-6)?

1-Methyl-1-phenylhydrazine (CAS: 618-40-6) falls under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as a toxic substance. It must comply with REACH regulations in the European Union, which require suppliers to register substances above 1 tonne annually. In the United States, it is regulated by the FDA and EPA, requiring proper labeling, storage, and disposal to prevent environmental and occupational hazards.