Calcium Sulfite or E226 is an inorganic compound (synthetic preservative) that has the appearance of a white crystalline powder. It is used in food for the purposes of extending shelf life and preservation (it has anti-bacterial and anti-fungi properties).

Potassium Metabisulfite or E224 is an inorganic compound (synthetic preservative) that comes in a form of white crystalline powder and is used for the purpose of battling bacteria and fungi in food, supplements, and medicine.

Sodium Metabisulfite or E223 is an inorganic compound used in food to extend the shelf life of predominantly dried foods.

Sodium Bisulfite or E222 is a crystalline powder (or comes in the form of white crystals) with a slight sulfurous smell used for food preservation (especially, taste) due to its antimicrobial and antioxidant properties.

Potassium Sulfite (E225) is a white solid inorganic compound (synthetic preservative) used in food to prevent spoilage from bacteria and fungi.

Propyl-P-Hydroxybenzoate Sodium Salt or E217 is the sodium salt sibling of the Propyl-P-Hydroxybenzoate (E216) which is a synthetic ethyl ester belonging to parabens.

Propyl-P-Hydroxybenzoate or E216 is an artificial ethyl ester from the origins of Benzoic Acid to help fight off yeast, fungi, and mold typically found in skin products.

Ethyl-P-Hydroxybenzoate Sodium Salt or E215 is benzoic acid in the form of an artificial ethyl ester that is used for the prevention of yeast, fungi, and mold.

Ethyl 4-Hydroxybenzoate is a paraben used sometimes in food to prevent mold, yeast, and fungi.

Calcium Benzoate is a synthetic preservative (anti-bacterial, anti-fungal, antiseptic) appearing as white or colorless crystals and is effective only in slightly acidic products.

Potassium Benzoate or E212 is a synthetic preservative (white, odorless powder that can’t be found naturally) used for battling yeast, bacteria, and mold typically used in all kinds of low PH (below 4.5) foods.