Kosher, except for Pesach
Description: Acetic Acid
Rationale:
Per STAR-K, acetic acid/vinegar's real concern is the fermented alcohol source being chametz or kitniyot for Passover, not a year-round non-kosher source.
If you don't see a status above, it does not mean the additive is not kosher automatically - it might just not be documented in our database yet.