Product Description Acid Black 172, tech. Other Details Molecular Formula: C40H20CrN6Na3O14S2 Molecular Weight: 993.71 CAS Number: 57693-14-8 Minimum Purity: 0 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 0 Leadtime:0 Sizes 3: 0 Leadtime:0