About: http://webisa.webdatacommons.org/212105488

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	When using compounds of formula (IV) in which X is a halogen atom as described above, the reaction is conveniently effected at a temperature of -10??? to +50??? C., preferably +10??? to +30??? C.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr