1. Solid alcohol, also known as "alcohol block", contains paraffin wax, copper nitrate, liquid alcohol, sodium hydroxide and stearic acid

2. When making, heat water to about 81℃, add proper amount of stearic acid (about 2:3 of anhydrous ethanol added later), and then add 1.5 times of anhydrous ethanol, and the solution is near boiling. Mix an appropriate amount of paraffin into it, and then add 25% NaOH solution, the volume of NaOH solution is about 75% of the volume of alcohol. Then add the same amount of anhydrous alcohol as the first time, stir well, inject the mold while it is hot, and cool to get solid alcohol.

3. Solid alcohol, because of its convenient use, transportation and carrying, causes less environmental pollution when burning, and is safer than liquid alcohol. As a solid fuel, it is widely used in catering, tourism and field work.