Molasses to Remove Rust from 1920 Ford Model T Pistons

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Discussion Overview

The discussion centers around the use of molasses for rust removal from 1920 Ford Model T pistons, exploring the chemical processes involved in rust inhibition and removal. Participants are sharing insights, questions, and personal experiences related to this unconventional method.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant is researching the chemical processes involved in using molasses for rust removal and seeks detailed information on the science behind it.
  • Another participant expresses curiosity about the specific compounds produced during the fermentation of molasses, such as citric acid.
  • A suggestion is made to consider using sulfuric acid instead of molasses for rust removal.
  • Some participants mention that there are reports of molasses being effective for rust removal, although the exact chemistry is unclear.
  • It is noted that molasses may contain organic mixtures and chelating agents that could contribute to rust removal.
  • One participant proposes that the sugars in molasses might act as reducing agents, potentially reducing metal oxides at the surface of the pistons.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the effectiveness of molasses for rust removal, with some supporting its use while others suggest alternative methods. The discussion remains unresolved regarding the specific chemical mechanisms at play.

Contextual Notes

Participants acknowledge the lack of clarity on the chemistry involved and the need for further exploration of the topic. There are also considerations regarding the conditions under which the rust removal process should occur, such as sealing the container to limit oxygen exposure.

kokolyia
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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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