What regulatory guidelines apply to Caesium hydroxide hydrate (1:1:1) (CAS: 35103-79-8)?

Caesium hydroxide hydrate (1:1:1) (CAS: 35103-79-8) is classified under GHS (Global Harmonized System of Classification and Labeling of Chemicals) as a highly corrosive chemical. It is subject to REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulations in the EU, requiring suppliers to register substances above one tonne per year. In the USA, the FDA and EPA regulate its use and disposal, particularly concerning the protection of the environment and worker safety.