Which household products contain enough oxalic acid?

[wipe_out]

Tried two chemists today and neither had or could get oxalic acid.. The one said they even have a hard time getting citric acid..

Looked in Sainsbuys too and couldn't see oxalic acid listed on any of the contents labels..

So looks like I will be try ASDA for Bar Keepers Friend as a suggested alternative..

 

[dunmor]

pm sent

 

[nigelmercier]

Approx pK_a values:

Another thing I didn't know about, I do enjoy following up on stuff Vic writes.

https://en.wikipedia.org/wiki/Acid_dissociation_constant

 

[CreakyDecks]

Brick cleaner is quite powerful acid (Hydrochloric I think). I have never tried it so I don't know what it would do to a boat!

 

[VicS]

Brick cleaner is quite powerful acid (Hydrochloric I think). I have never tried it so I don't know what it would do to a boat!

some brick cleaners do indeed contain hydrochloric acid