Denatured alcohol will have different additives but is most commonly it is made by adding methanol to ethanol.
Both evaporate completely. So none of the bad methanol is left.
Not having a chemist handy,
I posed this question to chatgp: “What is left when denatured alcohol evaporates”
The answer:
When denatured alcohol evaporates, what is left behind depends on the specific formulation of the denatured alcohol. Denatured alcohol is ethanol that has additives to make it unfit for human consumption. These additives can include substances like methanol, isopropanol, acetone, denatonium, and various other chemicals.
The key outcomes after evaporation include:
1. **Ethanol and Volatile Additives**: Both ethanol and many of the volatile additives will evaporate completely, leaving no residue.
2. **Non-Volatile Additives**: If the denatured alcohol contains non-volatile additives or impurities, these may remain as a residue. Non-volatile substances do not evaporate at the same rate as ethanol and volatile additives, potentially leaving behind a small amount of solid or liquid residue.
3. **Water**: If the denatured alcohol contains water, any remaining water may leave a slight moisture residue depending on environmental conditions.
In most typical formulations, denatured alcohol is designed to evaporate cleanly, leaving minimal to no residue. However, the exact nature of the residue can vary based on the specific denaturing agents used in the formulation.
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