1.Molecular Formula: C23H19N2NaO5S 2.Molecular Weight: 458.46 3.CAS: 6397-02-0 4.Uses: Appearance is blue powder, mainly used in the dyeing of real silk, nylon and acrylic fabrics. 5.It is one kind of non-mental, non-narcotic, non-flammable, non-precursor chemicals; it isn't the material of chemical weapons non-toxic. Non-hazardous chemicals .