The molecule is an organic sodium salt composed of iron(3+), sodium and 5-(oxidoimino)-6-oxo-5,6-dihydronaphthalene-2-sulfonate ions in a 1:1:3 ratio. Used to stain collagen and animal tissue. It has a role as a histological dye. It is an organic sodium salt and an iron coordination entity. It contains a 5-(oxidoimino)-6-oxo-5,6-dihydronaphthalene-2-sulfonate.
trisodium;iron(3+);5-nitroso-6-oxidonaphthalene-2-sulfonate