How Long to Soak a Three-Way Catalytic Converter in Oxalic Acid?

1 Answers
HarrisonMarie
07/30/25 2:05am
Soaking a three-way catalytic converter in oxalic acid for 30 minutes to 1 hour is sufficient, ensuring all areas are evenly immersed to avoid uneven cleaning. The three-way catalytic converter transforms harmful gases such as carbon monoxide and hydrocarbons emitted from vehicle exhaust into harmless substances through oxidation and reduction reactions. When high-temperature exhaust passes through the purification device, the catalyst in the three-way catalytic converter enhances the activity of harmful gases, promoting redox chemical reactions to purify the exhaust. Oxalic acid soaking can be used for rust removal from the three-way catalytic converter, but caution is required. Oxalic acid is highly corrosive to stainless steel, and high concentrations can also corrode the skin. Additionally, the resulting acid oxalate salts are highly soluble and somewhat toxic. If skin contact occurs, rinse immediately with water.
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