{"id":56,"date":"2026-08-05T23:48:11","date_gmt":"2026-08-05T23:48:11","guid":{"rendered":"https:\/\/www.northstarmanagedit.com\/mcc3\/product\/sodium-metabisulfite\/"},"modified":"2026-08-05T23:48:11","modified_gmt":"2026-08-05T23:48:11","slug":"sodium-metabisulfite","status":"publish","type":"mc_product","link":"https:\/\/www.northstarmanagedit.com\/mcc3\/product\/sodium-metabisulfite\/","title":{"rendered":"Sodium Metabisulfite"},"content":{"rendered":"<p>Sodium metabisulfite, available in technical and food grades.<\/p>\n<h2>Typical uses<\/h2>\n<ul>\n<li>Dechlorination ahead of reverse osmosis membranes, which chlorine destroys<\/li>\n<li>Reduction of hexavalent chromium to trivalent before precipitation<\/li>\n<li>Neutralising residual chlorine before discharge<\/li>\n<li>Oxygen scavenging in boiler feedwater<\/li>\n<li>Preservative in food and beverage, at food grade<\/li>\n<\/ul>\n<h2>Handling<\/h2>\n<p>Contact with acid liberates sulfur dioxide gas, which is why metabisulfite must be kept away from acid storage and why an acidic spill into a bag is a serious event rather than a cleanup.<\/p>\n<p>The dry product slowly loses strength on exposure to air. Keep bags sealed. A solution loses strength faster still \u2014 make it up fresh rather than holding a dilute tank for weeks.<\/p>\n<p>Sulfite sensitivity is real in a subset of the population. Where dust exposure is possible, ventilation and respiratory protection matter more than the modest hazard rating suggests.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sodium metabisulfite in bags and supersacks. The standard reducing agent for dechlorination and for reducing hexavalent chromium.<\/p>\n","protected":false},"featured_media":0,"menu_order":240,"template":"","meta":[],"mc_product_category":[7],"class_list":["post-56","mc_product","type-mc_product","status-publish","hentry","mc_product_category-dry-chemicals"],"_links":{"self":[{"href":"https:\/\/www.northstarmanagedit.com\/mcc3\/wp-json\/wp\/v2\/mc_product\/56","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.northstarmanagedit.com\/mcc3\/wp-json\/wp\/v2\/mc_product"}],"about":[{"href":"https:\/\/www.northstarmanagedit.com\/mcc3\/wp-json\/wp\/v2\/types\/mc_product"}],"wp:attachment":[{"href":"https:\/\/www.northstarmanagedit.com\/mcc3\/wp-json\/wp\/v2\/media?parent=56"}],"wp:term":[{"taxonomy":"mc_product_category","embeddable":true,"href":"https:\/\/www.northstarmanagedit.com\/mcc3\/wp-json\/wp\/v2\/mc_product_category?post=56"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}