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

Cyclohexane
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Cyclohexane C6H12 = 84.2 (110-82-7)

Clear, colourless, flammable liquid, practically insoluble in water, miscible with organic solvents.

bp2013_v5_47_1003_[appendix_i_a]_c_ep7-7_ep_revised_texts d_20_20.png, about 0.78; boiling point, about 80.5°;.

Cyclohexane used in spectrophotometry complies with the following additional test.

Transmittance Not less than 45% at 220 nm, 70% at 235 nm, 90% at 240 nm and 98% at 250 nm, using water in the reference cell.