Molasses to Remove Rust from 1920 Ford Model T Pistons

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The discussion centers on the use of molasses for rust inhibition and removal, particularly in the context of restoring two 1920 Ford Model T pistons. The original poster seeks detailed scientific insights into the chemical processes involved, specifically what compounds are produced during the fermentation of molasses, such as citric acid. Participants mention that while molasses may contain organic mixtures and chelating agents that could aid in rust removal, alternative methods like using sulfuric acid are also suggested. Emphasis is placed on the importance of sealing the parts and solution to minimize oxygen exposure, as sugars in molasses may act as reducing agents, potentially aiding in the reduction of metal oxides. The discussion also references the Tollens test, highlighting the historical use of reducing sugars in chemical reactions. Overall, the conversation aims to explore the effectiveness and chemistry behind using molasses for rust removal.
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Hello all, I am currently doing research on the process of rust inhibition and removal using molasses but finding info is tedious (the process is slow as...) :) Anyways, does anyone happen to know the exact science and chemical processes. Any info is appreciated. I will also be posting the findings of my experiment on this site. I have a hold of two 1920 Ford Model T pistons that are caked in rust. These are going to be submerged in molasses for quite a while. I will be using molasses to de-rust the masses! (I know there is a pun!) Cheers!
 
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molasses? :DD
 
yes. Molasses indeed. In short, can anyone elaborate upon what (ex. citric acid, etc.) is produced when molasses ferments? Thanks!
 
thankz said:
first search:

Have you tried to search for "rust removal with molasses"? There are definitely people reporting it as working. What is the chemistry behind I have no idea, but it is an organic mixture that can contain some chelating agents, so I would not reject it just because it sounds funny.

An important thing to consider - I would keep parts and the solution it in a sealed container, to reduce amount of oxygen dissolving.
 
Some sugars are pretty good reducing species. Maybe you are reducing the oxides at the metal surface?

The Tollens test is a famous old reaction that used to be used to test for the presence of reducing sugars.

http://en.wikipedia.org/wiki/Tollens'_reagent

You can make a lovely mirror with the silver reagent and a reducing agent:

 

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