ACID YELLOW 220 200% Neutral yellow S-2G ; C.I.11714 Acid yellow 220; Acid yellow RG 1. Structure: 2.Molecular Formula: C23H18ClN4NaO7S 3. Molecular Weight: 552.92 4. CAS: 71603-79-7 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. Safety: 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