Yes, isopropyl alcohol does dissolve super glue and makes it biodegradable. Isopropyl alcohol (or rubbing alcohol) turns into acetone when mixed with water. Acetone can then break chemical bonds in materials like plastic and rubber that would otherwise be too strong for water molecules to easily break apart on their own. Depending on the ratio of alcohol to water used and the chemicals involved in a manufacturing process, this could diminish its strength over time or cause it to eventually decompose completely.