EVAPO Rust Remover

SUPER SAFE RUST REMOVER • JUST SOAK, RINSE, & REUSE

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FAQs

How does Evapo-Rust® work?

EVAPO-RUST® works through selective chelation. This is a process in which a large synthetic molecule forms a bond with metals and holds them in solution. Most chelating agents bind many different metals. The active ingredient in EVAPO-RUST® bonds to iron exclusively. It can remove iron from iron oxide but is too weak to remove iron from steel where the iron is held much more strongly. Once the chelating agent has removed the iron, a sulfur bearing organic molecule pulls the iron away from the chelator and forms a ferric sulfate complex which remains water soluble. This frees the chelating agent to remove more iron from rust.

Do parts have to be completely clean before immersion?

Will EVAPO-RUST® remove bluing and other oxide finishes?

Can I clean brass, copper and aluminum with EVAPO-RUST®?

Can I spray EVAPO-RUST® on the rusted area?

How can I use it on a surface too large to soak?

How long does EVAPO-RUST® last?

How do I know when the bath is spent?

How do I dispose of the spent solution?

What size containers is EVAPO-RUST® packaged in?

How long will Evapo-Rust® last, and how many times can it be re-used?

After soaking metal in Evapo-Rust®, is any further treatment required?

The process for removing rust with Evapo-Rust® is through a soaking of the rusted metal. Are there any other ways to use the solution to remove rust, such as painting or brushing the solution on the rusted area??

How can I use Evapo-Rust® on an area that is difficult to soak?

Can I spray Evapo-Rust® on the rusted area?

I got a black film on some parts after using Evapo-Rust®. What is it, and how do I remove it?

How do I use Evapo-Rust® in a cooling system?

1. Drain cooling system and rinse with water.
2. Fill system with Evapo-Rust®. (Do NOT dilute.)
3. Run Engine under normal conditions, shut engine down and let sit, for a couple hours to overnight.
4. Drain system into a container for later use.
5. Flush system with water.
6. Repeat process (1-5) if necessary.
7. Fill system with proper coolant/antifreeze.

I got a black film on some parts after using Evapo-Rust®. What is it, and how do I remove it?

The black film is carbon from the steel. Steel is composed of a combination of carbon and iron. In certain instances, steel will darken in color after rust has been removed from the surface of the metal. This is a natural phenomenon that chemists refer to as “carbon migration”. The carbon from the steel moves, or “migrates”, to the outer layer of the metal and settles into the pores. The removal of the rust (iron oxide) reduces the proportion of iron to carbon, leaving a higher concentration of carbon on the outer surface. This heavier layer of carbon could cause a darkening of the metal due to the attributes of the carbon. The darkening does not have an adverse affect on the metal. It merely represents the movement of carbon from the interior of the metal to the exterior of the metal.

Since Evapo-Rust® is a highly effective rust remover, it stimulates the carbon migration process. Evapo-Rust®is not alone in creating the carbon migration effect. Other rust removal treatments will also result in carbon migration and a darkening of the metal. The primary difference between Evapo-Rust® and the acid based treatments is that Evapo-Rust® will not harm or weaken the metal. Unlike other treatments, Evapo-Rust® will not darken products made with low carbon steel.

With Evapo-Rust®, sometimes a wiping with a dry cloth or a more rigorous buffing can remove the dark coloring. A quick rinsing of the metal after Evapo-Rust® has been applied may also keep the carbon from settling into the pores of the metal.

There are several things that can be tried to minimize the effects of carbon migration. First, high carbon parts should not be soaked longer than necessary. Once the rust has been removed, the parts should be rinsed and dried. Second, a further dilution of the Evapo-Rust® formula may have a positive affect. The lower concentration of Evapo-Rust® will take longer to remove the rust, but may have less of an effect on causing the carbon migration.