<?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">calcium chloride</topic></authority><related type="broader"><topic>salt</topic></related><variant type="other"><topic>CaCl2</topic></variant> <note xml:lang="en"><![CDATA[ The anhydrous form of calcium chloride is very hygroscopic. It is used as a desiccant. Calcium chloride also exists as dihydrate and hexahydrate crystals. These crystalline forms are used in antifreeze solutions, fire extinguishers, fireproofing solutions, wood preservatives, as a gelling agent for starch size and to melt snow and ice from roads. Calcium chloride was used to speed up the rate of cure in mortar, shotcrete, and dry-mix concrete until 1973 when it was replaced by a non-chloride accelerator because it corroded steel reinforcements.  ]]></note></mads>