How should 4,5-Dichlorophthalonitrile (CAS: 139152-08-2) be stored?

4,5-Dichlorophthalonitrile should be stored in a cool, dry place away from direct sunlight and heat sources. It should be kept in a tightly sealed container to prevent moisture and light exposure. Store it in a well-ventilated area and ensure it is out of reach of children and pets. Follow all storage recommendations provided by the supplier.