WARNING:  This is an acid-based formula that can damage aluminum and plated surfaces like chrome. Also, this product can be corrosive to metals so only allow it to stay in contact with the substrate long enough to remove unwanted rust. Also Available:   US Quart (946ml) – Liquid submersion formula – One quart bottle de-rusts about 5 sq. ft., One gallon de-rusts about 20 square feet. – Leaves metal ready to paint, plate or powder coat. – So gentle, it’s suitable for engine parts. – Parts can remain in contact with Eastwood Rust Dissolver without damage. – Harmless to copper, brass, solder, lead, plastic, rubber, seals, wood or vinyl. – Removes blueing and other oxide coatings.