Is 3,4-Dichloro-1-butene (CAS: 760-23-6) safe?

3,4-Dichloro-1-butene can be hazardous and requires proper handling and precautions. It is toxic and may cause irritation to the eyes, skin, and respiratory system. Protective measures include wearing appropriate safety gear such as gloves and a respirator. It should be stored in a well-ventilated area away from sources of ignition and incompatible materials.