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

Dimethylaminobenzaldehyde Solution R6
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Dimethylaminobenzaldehyde Solution R6 Dissolve 0.125 g of dimethylaminobenzaldehyde in a cooled mixture of 35 mL of water and 65 mL of sulfuric acid. Add 0.1 mL of a 5% w/v solution of ferric chloride. Before use allow to stand for 24 hours, protected from light.

When stored at room temperature, use within 1 week; when stored in a refrigerator, use within several months.