RUST REMOVER SOAK dissolves rust quickly without harming surrounding parts, trim, gaskets or paint. Restore those old, rusty parts back to bare, for metal is an effective, carefully formulated product, to be used straight from its container without dilution or addition of any other materials. It is completely water soluble, odorless, and non-flammable. It does not produce fumes. It contains no hazardous or highly corrosive mineral acids or toxic volatile acids, such as muriatic acid or phosphoric acid.