Kosher, except for Pesach
Description: Sodium malates (i) Sodium malate (ii) Sodium hydrogen malate (acidity regulator)
Function: acidity regulator
Rationale:
Malic acid/malates are commonly listed among corn (kitniyot) derivatives; OU permits kitniyot-shenishtaneh derivatives generally but stricter/Mehadrin hashgachos do not, so a Passover flag is the conservative choice.
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.