Product Description Molecular formula: C3H3N3O3 Molecular weight: 129.07 CAS No: 108-80-5 Melting point: 330 dgree centigrade Density: 1.768(0 degree centigrade); 2.500(anhydride) Toxicity: Basical non-toxic, (LD50)7700 mg(mg/kg)(mouse) ......