Is 1,3-Diethylurea (CAS: 623-76-7) safe?

1,3-Diethylurea is generally considered safe when handled properly. However, it is important to follow safety guidelines. It is not highly toxic, but prolonged exposure to the skin or inhalation of dust may cause irritation. It should be handled with appropriate personal protective equipment, such as gloves and goggles. Storage should be in a cool, well-ventilated area, away from sources of ignition and incompatible materials. It is not considered a hazardous waste under standard regulations.