Click on the image to check the artwork
BLACK A-1 (Acid BLACK 207)
Neutral gray BG Neutral complex gray SB
1.   Structure:
           
2.  Molecular Formula: C18H16N4O5S
3.  Molecular Weight: 400.41
4.  CAS: 84145-95-9
5.  Uses: used in the dyeing of nylon, wool, silk, leather, nylon and N/C fabrics, also used in leather, ink, paper, wood, aluminum oxide surface industry,etc
6.  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
Acid BLACK 207