CAS Registry Number
CAS 2538-85-4 — Solochrome dark blue
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CAS No.2538-85-4
FormulaC20H13N2NaO5S
Mol. weight416.40
Also known as: 1-(2-Hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid sodium salt · Eriochrome Blue Black R · Mordant Black 17 · Palatine Chrome Black 6BN · Calcon · 1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-, monosodium salt · 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-, monosodium salt · Magracrom Blue
IUPAC: sodium 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
Available grades of CAS 2538-85-4
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