<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">sodium sulfite</topic></authority><related type="broader"><topic>sulfite</topic></related><variant type="other"><topic>sulfite, sodium</topic></variant> <note xml:lang="en"><![CDATA[ A soluble sodium salt of sulfurous acid (sulfite), appearing as small crystals or powder. Sodium sulfite is used in multiple industries and exhibits bleaching, reducing, de-sulfurizing, and dechlorinating functions. In the food industry it is used to maintain the appearance of freshness, and to preserve meat. It is also a component in many drugs, to help stabilize and maintain potency. It is used in the pulp and paper industry as a water treatment, and in photography it has been used in developer solutions, and as a hypo clear solution. ]]></note></mads>