About: http://webisa.webdatacommons.org/153651208

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	the pH of the reaction mixture being maintained at between 3.0 and 4.0 by addition of a suitable base such as an alkali metal hydroxide or carbonate, for example, sodium hydroxide, to yield a compound of the formula
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.br