Product Description Methylene Blue solution Other Details Molecular Formula: C16H18N3S.Cl Molecular Weight: 319.86 CAS Number: 61-73-4 Minimum Purity: 0.05 wt. % in H2O UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mL Leadtime:20 Days Sizes 2: 0 Leadtime:0 Sizes 3: 0 Leadtime:0