1,5-Naphthalenedisulfonic acid, 3-((4-amino-5-methoxy-2-methylphenyl)azo)-, potassium sodium salt 1,5-Naphthalenedisulfonic acid, 3-((4-amino-5-methoxy-o-tolyl)azo)-, potassium sodium salts (1:x:x) 79255-90-6