Ethyl Chloride, or Monochlorethane, is prepared by treating absolute ethyl alcohol with hydrochloric acid gas. The product is very volatile, highly inflammable, and must be protected from light.

Spray some Ethyl Chloride in a fine, concentrated stream upon a small skin area.

What change takes place?................................................................................................................................................................................

With a needle immediately test sensitiveness of spot. Result?........................................................

Ethyl Chloride is used to produce rapid local anaesthesia by freezing the skin. By inhalation it quickly produces profound sleep and a general anaesthesia, suitable for short operations.