Solvent Brown 41 Chemical Name Solvent Brown 41 C.I. No. 21000:1 CAS No. 1052-38-6 Synonyms Oil Brown 41, Bismarck Brown Base, Bismarck Brown Y Base, Bismark Brown Y Base, Simpsol Bismark G 24800 Molecular Formula C18H18N8 Molecular Weight 346.39