Disclaimer: This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and may change. Always refer to your local regulatory authority for the most current information.
Sulfur Dioxide
E220 | INS 220
Names & Identifiers
- E Number
- E220
- INS Number
- 220
- CAS Number
- 7446-09-5
- Scientific Name
- Sulfur dioxide
- Japanese Name
- 二酸化硫黄
- Also Known As
- Sulphur dioxide, SO2
Regulation Status by Country
European Union
Status: approved | Max level: varies by food category mg/kg
Must be declared on labels; allergen concern for sensitive individuals (especially asthmatics)
United States
Status: approved | GRAS
Must be declared on labels; banned from fresh fruits and vegetables (except grapes) since 1986
Japan
Status: approved | Category: 指定添加物
Australia / New Zealand
Status: approved | Code: 220
Declared allergen; must be declared when present at 10 mg/kg or more
Canada
Status: approved
Priority allergen in Canada; must be declared
What is Sulfur Dioxide?
Classification
Function: preservative
Type: inorganic
Source: synthetic
Natural Occurrence
A gas produced naturally during fermentation and volcanic activity, but the food additive is produced industrially.
Found in: Volcanic gases, produced during wine fermentation
How It's Made
Method: industrial production
Produced industrially by burning sulfur or roasting sulfide ores.
Uses Beyond Food
- Industrial: Used in paper manufacturing, water treatment, and as a reducing agent.
Commonly Found In
Sulfur Dioxide is typically used in:
Note: This list shows typical product categories and may vary by brand and region. Always check product labels for actual ingredients.
Safety Evaluations (Official)
EFSA (EU)
ADI: 0.7 mg/kg bw/day (group ADI for sulfites)
Evaluated: 2016
ADI = Acceptable Daily Intake (mg per kg of body weight per day)
Research & Official Documents
Official evaluations and scientific research:
Search research databases:
Frequently Asked Questions
What is Sulfur Dioxide (E220)?
Sulfur Dioxide (E220) is a preservative used in food products. It is inorganic and synthetic. A gas produced naturally during fermentation and volcanic activity, but the food additive is produced industrially.
Where is Sulfur Dioxide found naturally?
Sulfur Dioxide is naturally found in Volcanic gases, produced during wine fermentation. A gas produced naturally during fermentation and volcanic activity, but the food additive is produced industrially.
What is the ADI for Sulfur Dioxide?
The Acceptable Daily Intake (ADI) for Sulfur Dioxide is 0–0.7 mg/kg bw/day as established by JECFA (Joint FAO/WHO Expert Committee on Food Additives). ADI represents the amount that can be consumed daily over a lifetime without appreciable health risk.
What foods contain Sulfur Dioxide?
Sulfur Dioxide is used in various food categories including Dried fruit and vegetables, Wine and other grape-based products. It is used as a preservative in these products.
Is Sulfur Dioxide the same as Sulphur dioxide?
Yes, Sulfur Dioxide is also known as Sulphur dioxide, SO2. These are different names for the same substance.
Related Additives
Other preservatives in our database: