Diphenamid is a white crystalline solid in various forms. Molecular weight= 239.34; Freezing/Meltingpoint = 135℃; Vapor pressure= 2.8 3 10 2 8 mmHg at20℃. Hazard Identification (based on NFPA-704 M RatingSystem): Health 1, Flammability 0, Reactivity 0. Veryslightly soluble in water