Ethylene Di(Thiotosylate) [Protecting Reagent For Active Methylene] 98.0%(HPLC)

Victoria Blue BO is used to dye anionic substrates e.g. wool silk nylon and acrylics where bright dying is required. It is also used for staining in microscopy where it is used to stain mitochondria. As Solvent Blue 5 it is used in some pyrotechnic compositions for blue colored smoke.It is used to dye wool and silk directly producing a violet blue colour but cotton must be mordant with tannin.

For R&D use onlynot for drug household or other uses.

Victoria blue BO also known as C.I. Basic Blue 7 and C.I. 42595 is a chloride salt of a dye with the chemical formula [C33H40N3]Cl. It has the appearance of a reddish blue powder Victoria Blue BO base also known as Solvent Blue 5 and C.I. 425951 is the hydroxide derivative of the same cation. Its chemical formula is [C33H4oN3]OH. Victoria blues are members of the triarylmethane dyes but unlike most such dyes the Victoria blues have an naphthylamine group.