I have plastic, metal and rubber parts that are compatible with ethyl alcohol (they are regularly washed in a bath of ethyl alcohol). I’m looking for a substitute solution to wash these parts and I am considering denatured alcohol, however, I’m concerned that the denaturing ingredients will harm the parts. The denatured alcohol I’m considering is about 86% ethyl alcohol. It also contains the following: methyl alcohol 3.6 % methyl isobutyl ketone 1.9 % ethyl acetate 1.0 % naphtha solvent 0.8 % Does anyone know if a denatured alcohol with the above composition will be any more harmful to metal, plastic and rubber parts than would a pure ethyl alcohol solution? Thanks.