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

Ethane-1,2-diol

Ethane-1,2-diol Ethylene glycol; C2H6O2 = 62.07 (107-21-1)

Analytical reagent grade of commerce.

A colourless, viscous liquid; bp2012_v5_46_005_[appendix_i_a]_e d_20_20.png, 1.113 to 1.115; bp2012_v5_46_005_[appendix_i_a]_e n_20_d.png, 1.430 to 1.433; boiling point, about 196°.

Acidity To 10 mL add 20 mL of water and 1 mL of phenolphthalein solution. Not more than 0.15 mL of 0.02 m sodium hydroxide is required to change the colour of the indicator to pink.

Water Not more than 0.2%.