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ALUMINIUM DISSOLUTION

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capral

capral

Industrial
Joined
Mar 24, 2002
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AU

What is the concentration of NaOH required in a caustic/water solution to cause maximum dissolution rate of aluminium?

We currently use 25% NaOH to dissolve aluminium from extrusion dies.
 
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Aluminium dissolution will increase with increasing pH, so a concentrated NaOH solution should provide maximum dissolution. However, you may not want to handle concentrated NaOH, so use the maximum concentration you are comfortable with.
 
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