Is (2E)-2-Butenoic acid (CAS: 107-93-7) safe?

(2E)-2-Butenoic acid (CAS: 107-93-7) can be safe to handle with proper precautions. It is flammable and may cause irritation to the eyes, skin, and respiratory system. It is important to use personal protective equipment (PPE) such as gloves, goggles, and a lab coat. It should be stored in a well-ventilated area and kept away from heat and sources of ignition. Ingestion or inhalation should be avoided, and immediate medical attention is required if exposure occurs.