Product Description Acid Red 138 Other Details Molecular Formula: C30H37N3O8S2.2Na Molecular Weight: 677.74 CAS Number: 15792-43-5 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: 10mg Leadtime:20 Days Sizes 3: 25mg Leadtime:20 Days