Hydroxy Naphthol Blue Disodium Salt

165660-27-5

Sodium 3-hydroxy-4-((2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl)naphthalene-2,7-disulfonate; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-4-sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1:2); Disodium 3-hydroxy-4-(2-hydroxy-4-sulfonaphthalen-1-yl)diazenylnaphthalene-2,7-disulfonate;