Sodium sulfite E221
antioxidant — Primarily synthetic.
Sodium sulfite
CAS: 7757-83-7
Factual Regulatory Reference
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 is subject to change. Always refer to your local regulatory authority for the most current information.
What Is Sodium sulfite?
Sodium sulfite is an inorganic sulfite salt used as a preservative and antioxidant in dried fruits, wines, and processed vegetables. It belongs to the sulfite group (E221–E228), all evaluated together by JECFA and EFSA with a group ADI of 0.7 mg/kg body weight (as sulfur dioxide). Sulfites can trigger asthma-like reactions and allergic responses in sensitive individuals, particularly asthmatics. EU regulations require mandatory labeling of sulfite-containing foods above 10 mg/kg or 10 mg/L (expressed as SO₂).
? Did You Know?
In the EU, Sodium sulfite has a "quantum satis" authorization — Latin for "as much as needed." This means there's no specific maximum limit; manufacturers use only what's technologically necessary.
Detailed Regulatory Assessment
European Union (EFSA)
Permitted in specific categories
United States (FDA)
Regulated as a direct food additive under FDA CFR titles.
Japan (MHLW)
Compliant with Japanese food sanitation law.
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Everyday Perspective
For a 60kg adult, this limit is roughly equivalent to consuming:
Natural Occurrence
This additive is not known to occur naturally in significant quantities.
Manufacturing
Industrially produced.