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

Sulphuric Acid
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Sulphuric Acid H2SO4  =  98.08 (7664-93-9)

When no molarity is indicated use analytical reagent grade of commerce containing about 96% w/w of sulphuric acid and about 18m in strength; an oily, corrosive liquid; weight per  ml, about 1.84  g.

When solutions of molarity x m are required, they should be prepared by carefully adding 54x  ml of sulphuric acid to an equal volume of water and diluting to 1000  ml with water.

When ' sulphuric acid' is followed by a percentage figure, an instruction to add, carefully, sulphuric acid to water to produce the specified percentage v/v (or, if required, w/w) proportion of sulphuric acid is implied.