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<http://webisa.webdatacommons.org/281321320>	<http://www.w3.org/ns/prov#value>	"The base used in the aqueous basic solution is usually an alkali or alkaline earth metalhydroxide such as potassium hydroxide, sodium hydroxide, calcium hydroxide, or barium hydroxide, preferably potassium hydroxide." .
<http://webisa.webdatacommons.org/prov/135418422>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/281321320> .
<http://webisa.webdatacommons.org/281321320>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patentgenius.com> .