• British Pharmacopoeia Volume V
  • Appendices
  • Appendix I A. General Reagents

1-Naphtholbenzein
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1-Naphtholbenzein Naphtholbenzein, phenylbis(4-hydroxynaphthyl)methanol; C27H18O2 = 374.4 (145-50-6)

Brownish-red powder or shiny brownish-black crystals, practically insoluble in water, soluble in ethanol (96%) and in glacial acetic acid.