Is there any chemical preservative better than sodium benzoate?
I just want a second opinion about allowed food preservatives.


Allowed is crucial here and it might strongly depend of where the product is to be sold. You might want to have a look at national legislations.


For Germany, the Zusatzstoff-Zulassungsverordnung lists allowed preservatives and their maximum concentrations in different products.
For Canada, Health Canada provides a List of Permitted Preservatives.