How to Make The Blue Bottle Experiment at Home

“Music courtesy of Kevin MacLeod (”

In this video I will show you how to make the awesome color changing blue
bottle experiment with common household products

. Methylene Blue (Commonly sold as a fish treatment for fungal infections)
. Sodium Hydroxide (Drain Cleaner)
. Your favorite Maple syrup (Must Contain High Fructose corn syrup)

Methylene blue is widely used as a redox indicator in analytical chemistry. Solutions of this substance are blue when in an oxidizing environment, but will turn colorless if exposed to a reducing agent. The redox properties can be seen in a classical demonstration of chemical kinetics in general chemistry, the “blue bottle” experiment. Typically, a solution is made of glucose (in this case glucose and fructose, both reducing agents), methylene blue, and sodium hydroxide. Upon shaking the bottle, oxygen in the bottle oxidizes methylene blue, and the solution turns blue. The glucose and fructose will gradually reduce the methylene blue to its colorless, reduced form.


5 thoughts on “How to Make The Blue Bottle Experiment at Home

  1. Hi! Your experiment is extremely cool, so I want to ask can i use honey when doing the experiment to replace the maple syrup? THANK YOU! 🙂

  2. Does anyone know if I could use corn syrup? I kind of like the idea of a clear liquid turning blue as opposed to an amber liquid.

  3. Hey there! Your rendition of this experiment for a more cost effective solution you can do at home is really amazing! I was just wondering, using the materials you've outlined above, does the reaction continue to be reversible for extended amounts of time? Or is there a certain point when it reaches equilibrium and will no longer change from blue to yellow?

    Thank you!

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