How to Remove Rust With Molasses


Molasses is thick syrup that's created when cane and beet sugars are processed. It's been utilized as a sweetener and used for medicinal purposes for centuries. Molasses is also an effective treatment for rust when mixed with water, because the solution creates acetic acid. When rusty metal is immersed in the molasses solution, the mixture will penetrate cracks and crevices that can't be accessed with scraping tools or sandpaper. This rust remedy is very slow acting, but since the natural chemicals do all the work, it requires very little effort.

Things You'll Need

  • Molasses
  • Water
  • Plastic bucket with lid
  • Tongs or rubber gloves
  • Goggles
  • Stiff brush
  • Rust converter
  • Paint or oil
  • Add 2 quarts of molasses to 7 quarts of water in a plastic bucket. Stir and cover the bucket loosely.

  • Let the molasses mixture sit for about three weeks, then peel off the skin. Use tongs and wear rubber gloves as well as goggles when working with the solution.

  • Immerse the rusty item into the solution, replace the cover loosely, and leave it for two weeks.

  • Remove the item, again using tongs and wearing rubber gloves and goggles. Rinse under hot running water, and use a stiff brush to scrub off the molasses mixture and loosened rust.

  • Dry the item thoroughly and treat it with rust converter as soon as it's dry to prevent new rust from forming.

Tips & Warnings

  • Rust converter creates a black protective coating from the rust.
  • Keep the same proportions of molasses to water if you need to increase the amount for larger items.
  • The mixture can be used more than once, and will keep up to six months.

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  • Photo Credit Dave King/Dorling Kindersley RF/Getty Images
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