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

Naphthalene Black 12B
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Naphthalene Black 12B CI 20470; amido black 10B; C22H14N4Na2O9S2  =  588.5 (1064-48-8)

General reagent grade of commerce.

A dark brown powder.