Also Called: 1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-chloro-6-[(2-hydroxyethyl) amino]-1,3,5-triazin-2-yl]amino]-5-methoxy -2-methylphenyl]azo]-, disodium salt;1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-chloro-6-[(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-5-methoxy-2-methylphenyl]azo]-, disodium salt