Assay: 99% min Appearance: yellow or brown powder Molecular Formula: C14H8N2O4 Molecular Weight: 268.2 Density: 1.567 g/cm3 Melting Point: 195¡ãC Boiling Point: 499.3 ¡ãC at 760 mmHg Flash Point: 250.7 ¡ãC