E220Antioxidant · Preservative

Sulphur dioxide

What the research shows

Prototype

Concerning

in animal and lab studies only

1 of 2 health findings on this page · See the findings

A colorless gas with a pungent smell.

Written from English Wikipedia1

  • Vegan
  • Vegetarian
  • EU permitted

What research says

Studies in people

  • Open question

    Children's intake risk2

    In some Chinese children, eating sulphur dioxide in food added up to more than the safe daily amount.

Animal and lab studies only

  • Concern

    Male fertility5

    In animal studies, sulphur dioxide in an apricot drink was linked to sperm changes and testis tissue changes.

Study type not stated

  • Concern

    Gut and oral bacteria3

    Eating sulphur dioxide has been linked to upset gut and mouth bacteria, plus allergic reactions in some people.

  • Concern

    Children's health risk4

    In some dried fruits and vegetables, sulphur dioxide levels were high enough that children could take in too much.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Regulatory status

Checked Sep 2026

Status reflects the named register on the date checked. It is not a safety rating. A country appears here once we've found this ingredient on its official list.

How we check

Products

The 6 most-scanned of 2,121 products on Open Food Facts that list sulphur dioxide.

  • Big Mac McDonald's · 232 g 18 additives
  • Pesto Sun-Dried Tomato Saclà · 190 g 2 additives
  • Probiotic Apricots Nature's Garden 1 additive
  • Fiery Red Chilli Pesto Sacla' · 190 g 2 additives
  • Fruit and nut muesli Waitrose · 1 kg 0 additives
  • PLJ Lemon Rayner's · 500 ml 1 additive

References

  1. 1Sulfur dioxide. Wikipedia. Accessed September 26, 2026.
  2. 2Zhang JB, Zhang H, Wang HL, et al. Risk analysis of sulfites used as food additives in China. Biomed Environ Sci. 2014;27(2):147-54. doi:10.3967/bes2014.032
  3. 3D'Amore T, Di Taranto A, Berardi G, et al. Sulfites in meat: Occurrence, activity, toxicity, regulation, and detection. A comprehensive review. Compr Rev Food Sci Food Saf. 2020;19(5):2701-2720. doi:10.1111/1541-4337.12607
  4. 4Lou T, Huang W, Wu X, et al. Monitoring, exposure and risk assessment of sulfur dioxide residues in fresh or dried fruits and vegetables in China. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2017;34(6):918-927. doi:10.1080/19440049.2017.1313458
  5. 5Zaki EI, El-Mahdy AR, El-Gamal HM, El-Seedy AS. Cytogenetic and testicular histological alterations induced by sulphur dioxide in dried apricot leather. Cell Mol Biol (Noisy-le-grand). 2021;67(2):66-75. doi:10.14715/cmb/2021.67.2.10