[Radio1950]

Sorry, but I think you mean Sodium Hydroxide, Caustic Soda, NaOH.
Make sure you rinse it off well.
Caution when mixing with water; do it slowly, dribble the soda into the water.
Wear some form of safety glasses.
Caution if the water is hot, the mix can spatter or erupt violently.

This is often a main ingredient of dish washing detergent, and, in this manner, can be good for cleaning aluminium components, even tuning capacitors.

Our USA friends sometimes call this material Lye.

Use dilute Sodium Carbonate NaCo3 on its own (Washing Soda in AUS), for electrolytic cleaning, not NaOH.
One tablespoon per litre water is OK.

Use the caustic soda bath before the electrolytic cleaning for best and most efficient results.
Use with caution on aluminium, zinc, magnesium, stainless steel, and ventilate the processes.


Good luck, mike