Electrolysis of Na2SO4 on Submerged Aluminum

Thread starter Mike V
Start date Nov 27, 2022
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Aluminum Electrolysis Submerged

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Sodium sulfate (Na2SO4) is corrosive to aluminum when used as an electrolyte in water during electrolysis. It does not directly "eat away" at aluminum but instead forms a protective film of oxide or hydroxide on the aluminum surface while the sulfate ions bind to the metal. This interaction can lead to corrosion over time, affecting the integrity of submerged aluminum components.

Nov 27, 2022

Mike V

Will Na2SO4 (Sodium sulfate), when used as an Electrolyte in Water, EAT away at submerged Aluminum components, when performing Electrolysis ?

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Dec 8, 2022

osilmag

Gold Member

Sodium sulfate is corrosive to aluminum. It forms a film of oxide/hydroxide while the sulfate binds to aluminum. It doesn't actually "eat away" at it.

Dec 8, 2022

Mike V

Thank you osilmag.

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