Product Description Acid Yellow 220 Other Details Molecular Formula: C46H32Cl2CoN8Na4O14S2 Molecular Weight: 1206.72 CAS Number: 70851-34-2 Minimum Purity: 98% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5mg Leadtime:20 Days Sizes 2: 25mg Leadtime:20 Days Sizes 3: 100mg Leadtime:20 Days