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Sodium Metabisulfite 98.6+% Purity, Food/Photo Grade by Duda Energy Also known as Sodium pyrosulfite, pyrosulfurous acid-disodium salt Chemical Formula: Na2S2O5 Can be used to remove tree stumps. As a food additive, acts as a presdervative and antioxidant. Commonly used in wine and beer making. Recommended uses: Pulp and paper Photography Food Water Treatment Organic Synthesis Reducing Agent Dyes Surfactant Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.






