MIL-DTL-3691 Dye Mix, VioletThis specification covers two types of a mixture of two anthraquinone dyes \(CAS #?╞s 81-63-0 \(Blue\) and 82-38-2\(Red\)\); Type I - for solvent based binders and bowl and V type blenders, Type II - for air based fluidized bed type blenders.