{"id":106447,"date":"2026-06-29T10:07:53","date_gmt":"2026-06-29T10:07:53","guid":{"rendered":"https:\/\/stopcarcinogensatwork.eu\/fact\/cloropreno-2-cloro-13-butadieno\/"},"modified":"2026-06-29T10:07:53","modified_gmt":"2026-06-29T10:07:53","slug":"cloropreno-2-cloro-13-butadieno","status":"publish","type":"fact","link":"https:\/\/stopcarcinogensatwork.eu\/pt-pt\/fact\/cloropreno-2-cloro-13-butadieno\/","title":{"rendered":"Cloropreno (2-cloro-1,3-Butadieno)"},"content":{"rendered":"

N\u00e3o h\u00e1 estimativas dispon\u00edveis sobre o n\u00famero atual de trabalhadores expostos ao cloropreno (2-cloro-1,3-Butadieno) na UE. Normalmente, a exposi\u00e7\u00e3o profissional ao cloropreno ocorre por inala\u00e7\u00e3o e contacto cut\u00e2neo. O cloropreno tem uma classifica\u00e7\u00e3o harmonizada ao abrigo do Regulamento CRE como agente cancer\u00edgeno da categoria 1B. N\u00e3o h\u00e1 evid\u00eancias consistentes sobre se o cloropreno causa cancro nos seres humanos. Estudos em animais mostram que a exposi\u00e7\u00e3o a longo prazo a esta subst\u00e2ncia pode causar cancro no f\u00edgado e noutros \u00f3rg\u00e3os (como na cavidade oral). <\/p><\/blockquote>\n

Onde ocorrem os riscos<\/h2>\n

O cloropreno \u00e9 usado principalmente na ind\u00fastria qu\u00edmica para produzir policloropreno e outros materiais pl\u00e1sticos, bem como borrachas sint\u00e9ticas e colas (por exemplo, operadores de produ\u00e7\u00e3o e mistura\/dosagem de adesivos, t\u00e9cnicos de formula\u00e7\u00e3o ou trabalhadores da manuten\u00e7\u00e3o). Tamb\u00e9m \u00e9 utilizado no fabrico de 2,3-dicloro-1,3-Butadieno, um composto interm\u00e9dio na produ\u00e7\u00e3o de certos copol\u00edmeros.
\nOs trabalhadores podem ficar significativamente expostos durante as fases finais da s\u00edntese do cloropreno, durante os processos de polimeriza\u00e7\u00e3o e durante opera\u00e7\u00f5es que envolvam a remo\u00e7\u00e3o de mon\u00f3meros, em profiss\u00f5es como Operadores de processo, mec\u00e2nicos de f\u00e1brica, Montadores de tubagens e t\u00e9cnicos de instrumenta\u00e7\u00e3o. <\/p>\n

A exposi\u00e7\u00e3o tamb\u00e9m pode ocorrer na fabrika\u00e7\u00e3o de certos produtos farmac\u00eauticos de base, incluindo dispositivos m\u00e9dicos e equipamento de prote\u00e7\u00e3o m\u00e9dica, e no setor do fabrico de mobili\u00e1rio (por exemplo, em trabalhos de montagem, tarefas de aplica\u00e7\u00e3o de adesivos ou durante a lamina\u00e7\u00e3o de madeira), bem como em atividades de ensaios e an\u00e1lises t\u00e9cnicas (qu\u00edmicos anal\u00edticos, t\u00e9cnicos de laborat\u00f3rio).<\/p>\n

Mais informa\u00e7\u00f5es sobre a subst\u00e2ncia<\/h2>\n

O cloropreno \u00e9 um l\u00edquido vol\u00e1til e incolor. \u00c9 altamente reativo, inflam\u00e1vel e caracteriza-se por um odor pungente. Os produtos mais comuns para o utilizador final s\u00e3o os produtos de l\u00e1tex de policloropreno, como adesivos e colas de contacto, el\u00e1sticos e fios revestidos ou luvas de prote\u00e7\u00e3o.
\nEst\u00e1 atualmente a ser elaborado um valor-limite de exposi\u00e7\u00e3o profissional vinculativo a n\u00edvel da UE. <\/p>\n

Riscos para a sa\u00fade que podem surgir<\/h2>\n

The highest risk of professional exposure to chloroprene is through inhalation of the vapors present in the work area and skin contact. Short-term exposure to chloroprene can cause dizziness and vomiting after exposure to very high levels. Long-term exposure to chloroprene can cause liver cancer and cancers in other parts of the body. <\/p>\n

O que podes fazer<\/h2>\n

A melhor forma de reduzir o risco de exposi\u00e7\u00e3o \u00e9 substituir o cloropreno por subst\u00e2ncias mais seguras ou alterar o processo. Se isso n\u00e3o for poss\u00edvel, tens de tomar medidas para reduzir a exposi\u00e7\u00e3o. <\/p>\n

O m\u00e9todo mais eficaz \u00e9 usar sistemas automatizados ou sistemas fechados, para que os trabalhadores n\u00e3o tenham contacto direto com a subst\u00e2ncia.
\nDevem ser adotadas outras medidas t\u00e9cnicas de seguran\u00e7a para reduzir ao m\u00e1ximo a exposi\u00e7\u00e3o ao cloropreno. Por exemplo: sistemas de transfer\u00eancia mais seguros, vedantes e v\u00e1lvulas de melhor qualidade e m\u00e9todos de limpeza aperfei\u00e7oados que reduzam a necessidade de os trabalhadores entrarem no equipamento. Um melhor controlo do processo e melhores m\u00e9todos de amostragem tamb\u00e9m podem reduzir as fugas e a exposi\u00e7\u00e3o ao cloropreno. <\/p>\n

\u00c9 importante manter uma boa higiene no local de trabalho, incluindo limpezas regulares e um armazenamento seguro. A exposi\u00e7\u00e3o no local de trabalho deve ser verificada regularmente para garantir que as medidas de seguran\u00e7a est\u00e3o a funcionar. <\/p>\n

Tamb\u00e9m \u00e9 importante limitar o tempo que os trabalhadores passam em \u00e1reas expostas e controlar o acesso a esses locais, porque o cloropreno provoca irrita\u00e7\u00e3o local (danificando o epit\u00e9lio nasal). Os trabalhadores devem receber forma\u00e7\u00e3o sobre os riscos e sobre como trabalhar em seguran\u00e7a. \u00c9 preciso garantir uma boa higiene pessoal, incluindo instala\u00e7\u00f5es sanit\u00e1rias e tempo suficiente para a higiene. <\/p>\n

Devem ser realizados exames m\u00e9dicos aos trabalhadores que possam estar expostos, e estes devem comunicar quaisquer sintomas precoces, como irrita\u00e7\u00e3o na pele, nos olhos e no nariz, tonturas e queda de cabelo.<\/p>\n

Os trabalhadores devem usar equipamento de prote\u00e7\u00e3o, especialmente luvas e vestu\u00e1rio de prote\u00e7\u00e3o. No entanto, o equipamento de prote\u00e7\u00e3o individual s\u00f3 deve ser usado como \u00faltimo recurso, depois de esgotadas todas as outras solu\u00e7\u00f5es t\u00e9cnicas e organizacionais poss\u00edveis. <\/p>\n

Refer\u00eancias: ECHA, RAC<\/em><\/p>\n","protected":false},"template":"","carcinogens":[8579],"class_list":["post-106447","fact","type-fact","status-publish","hentry","carcinogens-cloropreno"],"yoast_head":"\nCloropreno (2-cloro-1,3-Butadieno) - STOP carcinogens at work<\/title>\n<meta name=\"description\" content=\"Be aware of what you work with! We collected all the important information these causing substances in easy-to-understand factsheets.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stopcarcinogensatwork.eu\/pt-pt\/fact\/cloropreno-2-cloro-13-butadieno\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cloropreno (2-cloro-1,3-Butadieno)\" \/>\n<meta property=\"og:description\" content=\"Be aware of what you work with! 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