<?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">potassium ferrocyanide</topic></authority><related type="broader"><topic>compounds</topic></related><variant type="other"><topic>ferrocyanide, potassium</topic></variant> <note xml:lang="en"><![CDATA[ Yellow, soluble crystalline compound used as an etching liquid, as a fungicide in paper, in dyes and pigments. In reaction with iron ions it becomes ferric ferrocyanide, the chief component of Prussian blue.  ]]></note></mads>