Product Description Acid Black 52, tech. Other Details Molecular Formula: 3C20H12N3O7S.2Cr.3Na Molecular Weight: 1488.15 CAS Number: 5610-64-0 Minimum Purity: 0 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25g Leadtime:20 Days Sizes 2: 100g Leadtime:20 Days Sizes 3: 0 Leadtime:0