~95%
Synonym(s): 4-Hydroxy-5-(2-hydroxybenzylideneamino)-naphthalene-2,7-disulfonic acid monosodium salt hydrate; 4-Hydroxy-5-(salicylideneamino)-2,7-naphthalenedisulfonic acid monosodium salt
Empirical Formula: C17H12NNaO8S2 • xH2O
CAS number: 445.40 (anhydrous basis)
MDL number: MFCD00149588
Purity: ~95%