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Sulphur dioxide E220 Preservative. Sulphur dioxide reacts with a wide range of substances found in food, including various essential vitamins, minerals, enzymes and essential fatty acids. Adverse reactions: bronchial problems particularly in those prone to asthma, hypotension (low blood pressure), flushing tingling sensations or anaphylactic shock. International Labour Organization says to avoid E220 if you suffer from conjunctivitis, bronchitis, emphysema, bronchial asthma, or cardiovascular disease.
Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula SO2. It is released by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel. Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.
Inhaling sulfur dioxide is associated with increased respiratory symptoms and disease, difficulty in breathing, and premature death.