What regulatory guidelines apply to thulium trichloride (CAS: 13537-18-3)?

Thulium trichloride (CAS: 13537-18-3) is classified as a hazardous substance under the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), requiring appropriate labeling and safety data sheets. Under REACH regulations, it is subject to notification and registration requirements. The U.S. FDA and EPA may regulate its use in certain applications, such as in manufacturing or medical devices, ensuring compliance with specific guidelines and standards.