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

Sulfuric Acid, Nitrogen-free

Sulfuric Acid, Nitrogen-free Sulphuric acid, nitrogen-free

Nitrogen-free sulfuric acid of commerce containing about 96% w/w of H2SO4.

Complies with the following test.

Nitrates To 5 mL of water add carefully 45 mL of the reagent being examined, allow to cool to 40° and add 8 mg of N,N′-diphenylbenzidine. The solution is faint pink or very pale blue.