Product Description Pigment Red 31 Other Details Molecular Formula: C31H23N5O6 Molecular Weight: 561.54 CAS Number: 6448-96-0 Minimum Purity: 0 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 0 Leadtime:0