CFR › Title 21 › Part 582 › §582.376621 CFR §582.3766Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Product. Sodium metabisulfite.(b)[Reserved](c)Limitations, restrictions, or explanation. This substance is generally recognized as safe when used in accordance with good manufacturing or feeding practice, except that it is not used in meats or in food recognized as source of vitamin B1.