@prefix pp: . @prefix metadata: . @prefix eol: . @prefix owl: . @prefix cos: . @prefix skos: . @prefix lexinfo: . @prefix vivo-inra: . @prefix ms2o: . @prefix xml: . @prefix dcterms: . @prefix vann: . @prefix pan: . @prefix prism: . @prefix foaf: . @prefix ontology: . @prefix void: . @prefix pav: . @prefix inra: . @prefix snomed: . @prefix ado: . @prefix onto: . @prefix core: . @prefix wto: . @prefix status: . @prefix schema: . @prefix obol: . @prefix owl2xml: . @prefix xsd: . @prefix rdfs: . @prefix fp: . @prefix ncbitaxon: . @prefix omv: . @prefix dcat: . @prefix kg: . @prefix sp: . @prefix prov: . @prefix eng: . @prefix cc: . @prefix st: . @prefix oboInOwl: . @prefix skosxl: . @prefix cw: . @prefix thviande: . @prefix rdf: . @prefix insee: . @prefix plp: . @prefix bibo: . @prefix thesaurusINRAE: . @prefix tp: . @prefix atol: . @prefix dc: . rdf:value "A very reactive and highly toxic green, gaseous element, belonging to the halogen family of substances. It is one of the most widespread elements, as it occurs naturally in sea-water, salt lakes and underground deposits, but usually occurs in a safe form as common salt (NaCl). Commercially it is used in large quantities by the chemical industry both as an element to produce chlorinated organic solvents, like polychlorinated biphenyls (PCBs), and for the manufacture of polyvinyl chloride plastics, thermoplastic and hypochlorite bleaches. Chlorine was the basis for the organochlorine pesticides, like DDT and other agricultural chemicals that have killed wildlife. The reactivity of chlorine has proved disastrous for the ozone layer and has been the cause of the creation of the ozone hole, which was first detected in the Southern Hemisphere over Antarctica and then over the Northern Hemisphere."@en ; prov:wasQuotedFrom . rdfs:label "RDF description of i_def_c2_2325" ; foaf:primaryTopic . skos:definition .