Acid Blue 7 (CI 42080) is a synthetic triphenylmethane blue dye. Triphenylmethane is a hydrocarbon. Chemical Name: sodium;4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate What it is used for and where Cosmetics Restricted cosmetic ingredient as IV/62 a Relevant Item in...