Ethanol (96%), Aldehyde-free

Aldehyde-free alcohol

Mix 1200 mL of ethanol (96%) with 5 mL of a 40% w/v solution of silver nitrate and 10 mL of a cooled 50% w/v solution of potassium hydroxide. Shake, allow to stand for a few days and filter. Distil the filtrate immediately before use.