<?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">acetylene black</topic></authority><related type="broader"><topic>carbon black</topic></related><variant type="other"><topic>black, acetylene</topic></variant> <note xml:lang="en"><![CDATA[ A form of carbon black that is produced in refractory chambers in the absence of air by the decomposition of acetylene gas preheated to 800 degrees Celsius. As a pigment, it is softer, bluer, and more intense than other carbon blacks. It is also used in industrial applications requiring high electrical conductivity, such as in dry cells. ]]></note></mads>