Why cant acetic acid be used to resolve a racemic mixture of methylbenzylamine

I understand that tartaric acid is added to produce diastereomeric salts, but why cant acetic acid be used. Is it that tartaric acid is a dicarboxylic acid and acetic is only monoprotic?

Tartaric acid is chiral so when you combine it with your base racemic mixture, you get two different salts which can be separated by physical methods like recrystallisation.