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Sodium sulfite is a chemical compound that is commonly used as an antioxidant, preservative, and reducing agent. Its molecular weight is 126.04 g/mol. Here are some of its effects:

1. Antioxidant: Sodium sulfite acts as an antioxidant by preventing the oxidation of food and beverages. It inhibits the growth of bacteria, yeast, and mold, thereby extending the shelf life of products.

2. Preservative: It is commonly used in the preservation of fruits and vegetables to prevent browning and spoilage. It inhibits the enzymatic browning reaction by interfering with the activity of polyphenol oxidase, an enzyme responsible for browning.

3. Reducing agent: Sodium sulfite is a reducing agent, meaning it can donate electrons to other compounds. It is used in the production of paper, textiles, and leather to remove excess chlorine and bleach.

4. Allergenic potential: Some individuals may be allergic to sodium sulfite. It can cause allergic reactions such as skin rashes, itching, hives, and in severe cases, anaphylaxis.

5. Respiratory irritation: Inhalation of sodium sulfite can irritate the respiratory system, causing symptoms such as coughing, wheezing, and shortness of breath. Individuals with asthma or other respiratory conditions may be more susceptible to these effects.

6. Sensitivity to sulfites: Some individuals may be sensitive to sulfites, including sodium sulfite. This sensitivity can cause symptoms such as headaches, flushing, rapid heartbeat, and gastrointestinal disturbances.

It is important to note that the effects of sodium sulfite can vary depending on the individual's sensitivity and the concentration of the compound. It is generally recognized as safe for consumption at appropriate levels, but individuals with known sensitivities or allergies should avoid products containing sodium sulfite.