What regulatory guidelines apply to 2-Butene (CAS: 624-64-6)?

2-Butene (CAS: 624-64-6) is classified under GHS as a flammable gas. It is subject to regulation under REACH in the European Union, which requires manufacturers and importers to register substances if they are produced or imported in quantities of 1 tonne or more per year. In the United States, the EPA and FDA also regulate its use in consumer products and food additives. Ensuring compliance with these regulations is crucial for safe handling and distribution.