Comparing E224 - Potassium metabisulphite vs E225 - Calcium Disulphite

Overview

E224 - Potassium metabisulphite

Potassium metabisulphite (E224) is a sulphite-based preservative and antioxidant used to keep foods and drinks fresh. It releases small amounts of sulphur dioxide that slow browning and help control unwanted microbes in products like wine, fruit products, and some soft drinks.

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E225 - Calcium Disulphite

Calcium Disulphite (E225) is a member of the “sulfites” group used to slow spoilage and prevent browning. It acts as both a preservative and an antioxidant, but it is rarely seen on modern ingredient lists and is not widely authorised on its own in major markets. Many products instead use other sulfites like sodium or potassium metabisulphite.

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Synonyms
E224
Potassium metabisulphite
Potassium metabisulfite
E225
Calcium Disulphite
Calcium Disulfite
Calcium Pyrosulphite
Calcium Pyrosulfite
Potassium sulfite
Potassium sulphite
Functions
antioxidantpreservative
antioxidantpreservative
Origins
Synthetic
Synthetic
Products

Found in 466 products

Found in 4 products

Search rank & volume
#2342.5K / mo🇺🇸U.S.
#2801.1K / mo🇺🇸U.S.
Awareness score

×0.79
under-aware

×18.25
over-aware

Search volume over time

Interest over time for 3 keywords in U.S. during the last 10 years.

Interest over time for 7 keywords in U.S. during the last 10 years.

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Popular questions

  1. How much potassium metabisulfite per gallon of wine?

    About 0.3 g per US gallon (≈50 ppm as SO2), or 1 Campden tablet per gallon; adjust to wine pH and confirm with a free SO2 test.

  2. How much potassium metabisulfite per gallon of mead?

    Start with ~0.3 g per US gallon (≈50 ppm as SO2), or 1 Campden tablet per gallon; mead’s typically higher pH may require more to reach the target molecular SO2, and stabilization often also uses potassium sorbate.

  3. Is potassium metabisulfite harmful?

    At permitted food levels it’s generally considered safe, but sulfites can trigger asthma or allergic‑like reactions in sensitive individuals; the powder/solutions are irritating, so avoid inhalation and skin/eye contact.

  4. When to add potassium metabisulfite to wine?

    Add at crush to limit wild microbes and oxidation, then maintain appropriate free SO2 after fermentation during aging/racking and just before bottling based on pH.

  5. How much potassium metabisulfite per gallon?

    About 0.3 g per US gallon (≈50 ppm as SO2), or 1 Campden tablet per gallon; measure free SO2 and adjust for your beverage’s pH.

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  1. Is potassium sorbate a sulfite?

    No—potassium sorbate (E202) is a sorbate preservative, not a sulfite; E225 refers to sulfite salts such as potassium sulfite used as antioxidants/preservatives.

  2. 17. what forms when hydrochloric acid and potassium sulfite react?

    Acidifying potassium sulfite (E225) with hydrochloric acid releases sulfur dioxide (SO2) and produces potassium chloride and water.

  3. Amountof potassium sulfite to use when racking wine?

    Aim to maintain about 20–40 mg/L free SO2 (pH-dependent); winemakers usually use potassium metabisulfite, but if using potassium sulfite (E225), add an SO2‑equivalent dose to reach that target.

  4. Canon mf4350d system error e225 solution when i try to print?

    That “E225” is a printer error code and unrelated to the food additive E225, which is a sulfite preservative.

  5. E225 equals what in american money?

    E225 is a food additive code, not a currency amount, so it doesn’t convert to US dollars.

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