How should 1,3-Diethylurea (CAS: 623-76-7) be stored?

1,3-Diethylurea should be stored in a cool, dry place with a temperature not exceeding 25°C, and kept away from heat, moisture, and direct sunlight. It should be stored in tightly sealed containers made of appropriate materials, such as glass or plastic, to prevent contamination and degradation. Handling should be done with care to avoid spills and ensure proper ventilation. It is important to keep the storage area clean and free from incompatible materials.