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

Chromotropic Acid Sodium Salt

Chromotropic Acid Sodium Salt Disodium 4,5-dihydroxynaphthalene-2,7-disulfonate; C10H6Na2O8S2, 2H2O = 400.3 (5808-22-0)

General reagent grade of commerce.

A pale brown powder.