About: http://webisa.webdatacommons.org/140755696

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	Optionally the pH of the reaction mass in step (3) was adjusted to the pH in the range of 3.0 to 5.0 and more specifically 3.6 to 4.2 using acid such as sulphuric acid, hydrochloric acid and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com