Disaster reaction cleaning kitchen island oak

[bodgettandleggett]

Hello, urgently need advice please, mistaken google research from the wife to remove a minor grease stain from a brand new joinery piece island prime oak for a new kitchen. Oak not been oiled yet, advice was to use baking soda, being alkaline this has reacted with oak being acidic and turned it black on a large area on top.
We've started sanding the life out of it but not sure how deep it is. Snag is seems its the oak itself reacted, not just a stain soaked in. Any other ideas eg other chemicals to reverse this?
Advice gratefully received

 

[Chrispy]

Oxalic acid is usually quite affective on oak stains but mot sure about the baking soda so perhaps a test is in order.

 

[MikeG.]

You'll get through it, but probably easier with a plane than by sanding. If it was a wet mixture and soaked in, it could be 2 or 3mm thick. It's an impressive reaction, isn't it.

 

[Inspector]

Oxalic acid is used to remove ink or iron stains in oak furniture. It bleaches the stains out to almost white and when cleaned and dried is stained to match the surrounding wood for refinishing. Take the necessary precautions with the Oxalic acid to protect your eye, lungs and skin.

Pete

 

[nev]

I'll say just in case its feasible and you haven't thought about it - could you turn the island top upside down? :duno: