{"id":522,"date":"2023-07-22T20:07:14","date_gmt":"2023-07-22T20:07:14","guid":{"rendered":"https:\/\/chemuza.org\/pt\/trifluoreto-de-nitrogenio-nf3\/"},"modified":"2023-07-22T20:07:14","modified_gmt":"2023-07-22T20:07:14","slug":"trifluoreto-de-nitrogenio-nf3","status":"publish","type":"post","link":"https:\/\/chemuza.org\/pt\/trifluoreto-de-nitrogenio-nf3\/","title":{"rendered":"Trifluoreto de nitrog\u00eanio \u2013 nf3, 7783-54-2"},"content":{"rendered":"<p>O trifluoreto de nitrog\u00eanio ou NF3 \u00e9 um potente g\u00e1s de efeito estufa usado na ind\u00fastria eletr\u00f4nica para grava\u00e7\u00e3o e limpeza de plasma. Tem uma longa vida atmosf\u00e9rica e contribui para as mudan\u00e7as clim\u00e1ticas.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td> Nome IUPAC<\/td>\n<td> Trifluoreto de nitrog\u00eanio<\/td>\n<\/tr>\n<tr>\n<td> F\u00f3rmula molecular<\/td>\n<td> NF3<\/td>\n<\/tr>\n<tr>\n<td> N\u00famero CAS<\/td>\n<td> 7783-54-2<\/td>\n<\/tr>\n<tr>\n<td> Sin\u00f4nimos<\/td>\n<td> Trifluoramina, fluoreto de nitrog\u00eanio (NF3), fluoreto de nitrog\u00eanio (1:3), fluoreto de nitrog\u00eanio (NF3), fluoreto de nitrog\u00eanio (III), fluoreto de nitrog\u00eanio, comprimido, ONU 2451<\/td>\n<\/tr>\n<tr>\n<td> InChI<\/td>\n<td> InChI=1S\/F3N\/c1-4(2)3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h6 class=\"wp-block-heading\"> Massa molar de trifluoreto de nitrog\u00eanio<\/h6>\n<p> A massa molar do NF3 \u00e9 71,0 g\/mol. Isso significa que um mol de NF3 cont\u00e9m 6.022 x 10 ^ 23 mol\u00e9culas.<\/p>\n<h6 class=\"wp-block-heading\"> Ponto de ebuli\u00e7\u00e3o do trifluoreto de nitrog\u00eanio<\/h6>\n<p> O NF3 tem um ponto de ebuli\u00e7\u00e3o de -129,04\u00b0C ou -200,27\u00b0F. Isto \u00e9 relativamente baixo em compara\u00e7\u00e3o com outros gases, tornando-o mais f\u00e1cil de manusear em aplica\u00e7\u00f5es industriais.<\/p>\n<h6 class=\"wp-block-heading\"> Ponto de fus\u00e3o do trifluoreto de nitrog\u00eanio<\/h6>\n<p> O trifluoreto de nitrog\u00eanio tem um ponto de fus\u00e3o de -206,73\u00b0C ou -340,11\u00b0F. Isto significa que \u00e0 temperatura ambiente, o NF3 est\u00e1 no estado gasoso.<\/p>\n<h6 class=\"wp-block-heading\"> Densidade de NF3 g\/mL<\/h6>\n<p> A densidade do NF3 \u00e9 1,88 g\/mL em temperatura e press\u00e3o padr\u00e3o. Isso significa que o trifluoreto de nitrog\u00eanio \u00e9 mais denso que o ar e ir\u00e1 afundar no solo se for liberado na atmosfera.<\/p>\n<h6 class=\"wp-block-heading\"> Peso molecular do trifluoreto de nitrog\u00eanio<\/h6>\n<p> O peso molecular do NF3 \u00e9 71,0 g\/mol. \u00c9 a soma dos pesos at\u00f4micos de nitrog\u00eanio e fl\u00faor no composto. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/NF3.jpg\" alt=\"Trifluoreto de nitrog\u00eanio\" width=\"202\" height=\"121\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<h6 class=\"wp-block-heading\"> Estrutura do trifluoreto de nitrog\u00eanio<\/h6>\n<p> O trifluoreto de nitrog\u00eanio tem uma geometria molecular piramidal trigonal com nitrog\u00eanio como \u00e1tomo central e tr\u00eas \u00e1tomos de fl\u00faor ao seu redor. A liga\u00e7\u00e3o nitrog\u00eanio-fl\u00faor \u00e9 covalente polar, com os \u00e1tomos de fl\u00faor sendo mais eletronegativos que o nitrog\u00eanio, levando a uma carga parcial negativa nos \u00e1tomos de fl\u00faor e a uma carga parcial positiva no \u00e1tomo de nitrog\u00eanio.<\/p>\n<h6 class=\"wp-block-heading\"> F\u00f3rmula de trifluoreto de nitrog\u00eanio<\/h6>\n<p> A f\u00f3rmula qu\u00edmica do trifluoreto de nitrog\u00eanio \u00e9 NF3, o que indica que uma mol\u00e9cula de NF3 cont\u00e9m um \u00e1tomo de nitrog\u00eanio e tr\u00eas \u00e1tomos de fl\u00faor.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td> Apar\u00eancia<\/td>\n<td> G\u00e1s incolor<\/td>\n<\/tr>\n<tr>\n<td> Gravidade Espec\u00edfica<\/td>\n<td> 2,62<\/td>\n<\/tr>\n<tr>\n<td> Cor<\/td>\n<td> Incolor<\/td>\n<\/tr>\n<tr>\n<td> Cheiro<\/td>\n<td> Inodoro<\/td>\n<\/tr>\n<tr>\n<td> Massa molar<\/td>\n<td> 71,0 g\/mol<\/td>\n<\/tr>\n<tr>\n<td> Densidade<\/td>\n<td> 1,88 g\/mL nas CNTP<\/td>\n<\/tr>\n<tr>\n<td> Ponto de fus\u00e3o<\/td>\n<td> -206,73\u00b0C ou -340,11\u00b0F<\/td>\n<\/tr>\n<tr>\n<td> Ponto de ebuli\u00e7\u00e3o<\/td>\n<td> -129,04\u00b0C ou -200,27\u00b0F<\/td>\n<\/tr>\n<tr>\n<td> Ponto flash<\/td>\n<td> N\u00e3o aplic\u00e1vel<\/td>\n<\/tr>\n<tr>\n<td> Solubilidade em \u00c1gua<\/td>\n<td> 0,41 g\/100 mL a 25\u00b0C<\/td>\n<\/tr>\n<tr>\n<td> Solubilidade<\/td>\n<td> Sol\u00favel em solventes org\u00e2nicos<\/td>\n<\/tr>\n<tr>\n<td> Press\u00e3o de vapor<\/td>\n<td> 315kPa a 20\u00b0C<\/td>\n<\/tr>\n<tr>\n<td> Densidade do vapor<\/td>\n<td> 2,01 (ar = 1)<\/td>\n<\/tr>\n<tr>\n<td> pKa<\/td>\n<td> N\u00e3o aplic\u00e1vel<\/td>\n<\/tr>\n<tr>\n<td> pH<\/td>\n<td> N\u00e3o aplic\u00e1vel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h5 class=\"wp-block-heading\"> <strong>Seguran\u00e7a e perigos do trifluoreto de nitrog\u00eanio<\/strong><\/h5>\n<p> O trifluoreto de nitrog\u00eanio (NF3) \u00e9 geralmente considerado seguro se manuseado corretamente, mas pode representar v\u00e1rios perigos se manuseado incorretamente. Pode causar irrita\u00e7\u00e3o na pele e nos olhos e a inala\u00e7\u00e3o de altas concentra\u00e7\u00f5es pode causar dificuldade respirat\u00f3ria. O g\u00e1s NF3 pode deslocar o oxig\u00eanio em \u00e1reas mal ventiladas, levando \u00e0 asfixia. \u00c9 tamb\u00e9m um poderoso g\u00e1s com efeito de estufa que contribui para as altera\u00e7\u00f5es clim\u00e1ticas. Em caso de inc\u00eandio, o NF3 pode liberar g\u00e1s t\u00f3xico de fluoreto de hidrog\u00eanio. \u00c9 essencial seguir protocolos de seguran\u00e7a adequados, incluindo ventila\u00e7\u00e3o adequada e uso de equipamentos de prote\u00e7\u00e3o, ao manusear NF3 para evitar esses perigos.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td> S\u00edmbolos de perigo<\/td>\n<td> T, C<\/td>\n<\/tr>\n<tr>\n<td> Descri\u00e7\u00e3o de seguran\u00e7a<\/td>\n<td> Evite a inala\u00e7\u00e3o e o contato com a pele e os olhos. Use apenas em \u00e1reas bem ventiladas.<\/td>\n<\/tr>\n<tr>\n<td> N\u00fameros de identifica\u00e7\u00e3o da ONU<\/td>\n<td> UN2451<\/td>\n<\/tr>\n<tr>\n<td> C\u00f3digo SH<\/td>\n<td> 28129090<\/td>\n<\/tr>\n<tr>\n<td> Classe de perigo<\/td>\n<td> 2.3<\/td>\n<\/tr>\n<tr>\n<td> Grupo de embalagem<\/td>\n<td> II<\/td>\n<\/tr>\n<tr>\n<td> Toxicidade<\/td>\n<td> Muito t\u00f3xico<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h5 class=\"wp-block-heading\"> <strong>M\u00e9todos para a s\u00edntese de trifluoreto de nitrog\u00eanio<\/strong><\/h5>\n<p> Existem v\u00e1rios m\u00e9todos para sintetizar trifluoreto de nitrog\u00eanio (NF3):<\/p>\n<p> Um m\u00e9todo comum envolve a rea\u00e7\u00e3o de am\u00f4nia anidra (NH3) com g\u00e1s fl\u00faor (F2) na presen\u00e7a de um catalisador como ferro, n\u00edquel ou platina. A rea\u00e7\u00e3o produz NF3 e fluoreto de hidrog\u00eanio (HF). As ind\u00fastrias geralmente usam esse m\u00e9todo para a produ\u00e7\u00e3o de NF3.<\/p>\n<p> Outro m\u00e9todo envolve a decomposi\u00e7\u00e3o t\u00e9rmica do fluoreto de am\u00f4nio (NH4F) em altas temperaturas. A rea\u00e7\u00e3o produz NF3 e g\u00e1s am\u00f4nia (NH3). A rea\u00e7\u00e3o do NH3 com F2 \u00e9 mais eficiente que este m\u00e9todo, por isso \u00e9 menos utilizado.<\/p>\n<p> Outro m\u00e9todo envolve a rea\u00e7\u00e3o do \u00f3xido n\u00edtrico (NO) com g\u00e1s fl\u00faor na presen\u00e7a de um catalisador. A rea\u00e7\u00e3o produz gases NF3 e di\u00f3xido de nitrog\u00eanio (NO2).<\/p>\n<p> O NF3 tamb\u00e9m pode ser sintetizado eletroquimicamente, passando uma descarga el\u00e9trica atrav\u00e9s de uma mistura de gases N2 e F2. O plasma resultante forma NF3 e outros compostos de nitrog\u00eanio-fl\u00faor.<\/p>\n<p> Independentemente do m\u00e9todo utilizado, \u00e9 crucial manusear reagentes altamente reativos e potencialmente perigosos com precau\u00e7\u00f5es de seguran\u00e7a adequadas. Contudo, os pesquisadores devem controlar cuidadosamente o processo de s\u00edntese para garantir alto rendimento e pureza do produto final.<\/p>\n<h5 class=\"wp-block-heading\"> <strong>Usos do trifluoreto de nitrog\u00eanio<\/strong><\/h5>\n<p> O trifluoreto de nitrog\u00eanio (NF3) possui diversas aplica\u00e7\u00f5es industriais devido \u00e0s suas propriedades \u00fanicas.<\/p>\n<ul>\n<li> A ind\u00fastria de semicondutores usa NF3 como agente de limpeza para pastilhas de sil\u00edcio. O NF3 tamb\u00e9m \u00e9 utilizado na produ\u00e7\u00e3o de monitores de tela plana, c\u00e9lulas solares e sistemas microeletromec\u00e2nicos (MEMS).<\/li>\n<li> A fabrica\u00e7\u00e3o de componentes eletr\u00f4nicos usa NF3 como g\u00e1s de grava\u00e7\u00e3o a plasma. Apresenta alta reatividade e remove seletivamente certos materiais, deixando outros intactos.<\/li>\n<li> Os sistemas de refrigera\u00e7\u00e3o tamb\u00e9m utilizam NF3 como refrigerante devido ao seu menor potencial de aquecimento global do que outros refrigerantes, tornando-o uma op\u00e7\u00e3o mais ecol\u00f3gica.<\/li>\n<li> A ind\u00fastria aeroespacial utiliza o NF3 como propulsor devido ao seu alto impulso espec\u00edfico, o que permite a propuls\u00e3o eficiente de naves espaciais.<\/li>\n<\/ul>\n<p> Apesar dos seus muitos usos, existem preocupa\u00e7\u00f5es sobre o impacto ambiental do NF3. \u00c9 um poderoso g\u00e1s de efeito estufa com longa vida \u00fatil na atmosfera. A produ\u00e7\u00e3o e utiliza\u00e7\u00e3o de NF3 podem contribuir para as altera\u00e7\u00f5es clim\u00e1ticas se n\u00e3o forem tomadas as devidas precau\u00e7\u00f5es. \u00c9 por isso que est\u00e3o sendo feitos esfor\u00e7os para reduzir seu uso e desenvolver alternativas mais sustent\u00e1veis.<\/p>\n<h5 class=\"wp-block-heading\"> <strong>Quest\u00f5es:<\/strong><\/h5>\n<h6 class=\"wp-block-heading\"> P: O trifluoreto de nitrog\u00eanio (NF3) \u00e9 polar?<\/h6>\n<p> R: Sim, NF3 \u00e9 polar. Possui uma geometria molecular piramidal trigonal, com o \u00e1tomo de nitrog\u00eanio no centro e tr\u00eas \u00e1tomos de fl\u00faor dispostos ao seu redor. A forma assim\u00e9trica da mol\u00e9cula causa uma distribui\u00e7\u00e3o desigual da densidade eletr\u00f4nica, resultando em uma mol\u00e9cula polar.<\/p>\n<h6 class=\"wp-block-heading\"> P: Qual \u00e9 a f\u00f3rmula do trifluoreto de nitrog\u00eanio?<\/h6>\n<p> R: A f\u00f3rmula do trifluoreto de nitrog\u00eanio \u00e9 NF3, o que indica que a mol\u00e9cula consiste em um \u00e1tomo de nitrog\u00eanio e tr\u00eas \u00e1tomos de fl\u00faor.<\/p>\n<h6 class=\"wp-block-heading\"> P: De onde vem o trifluoreto de nitrog\u00eanio?<\/h6>\n<p> R: O NF3 pode ser produzido por v\u00e1rios m\u00e9todos, incluindo a rea\u00e7\u00e3o de am\u00f4nia anidra com g\u00e1s fl\u00faor, decomposi\u00e7\u00e3o t\u00e9rmica de fluoreto de am\u00f4nio e s\u00edntese eletroqu\u00edmica. \u00c9 comumente usado na ind\u00fastria de semicondutores como agente de limpeza e na fabrica\u00e7\u00e3o de componentes eletr\u00f4nicos e propulsores aeroespaciais.<\/p>\n<h6 class=\"wp-block-heading\"> P: Estrutura de Lewis do trifluoreto de nitrog\u00eanio?<\/h6>\n<p> R: A estrutura de Lewis para NF3 consiste em um \u00e1tomo de nitrog\u00eanio ligado a tr\u00eas \u00e1tomos de fl\u00faor por meio de liga\u00e7\u00f5es covalentes simples. H\u00e1 tamb\u00e9m um par de el\u00e9trons n\u00e3o ligados no \u00e1tomo de nitrog\u00eanio, dando \u00e0 mol\u00e9cula uma forma de pir\u00e2mide trigonal.<\/p>\n<h6 class=\"wp-block-heading\"> P: For\u00e7as intermoleculares do trifluoreto de nitrog\u00eanio?<\/h6>\n<p> R: As for\u00e7as intermoleculares do NF3 incluem intera\u00e7\u00f5es dipolo-dipolo, que resultam da natureza polar da mol\u00e9cula. O molecular tamb\u00e9m experimenta as for\u00e7as de dispers\u00e3o de London, que s\u00e3o for\u00e7as intermoleculares fracas resultantes de flutua\u00e7\u00f5es tempor\u00e1rias na densidade eletr\u00f4nica.<\/p>\n<h6 class=\"wp-block-heading\"> P: O NF3 \u00e9 polar ou apolar?<\/h6>\n<p> R: NF3 \u00e9 polar devido \u00e0 sua forma assim\u00e9trica e distribui\u00e7\u00e3o desigual de densidade eletr\u00f4nica. A mol\u00e9cula possui momento dipolar, indicando que possui extremidade positiva e negativa, tornando-a uma mol\u00e9cula polar.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O trifluoreto de nitrog\u00eanio ou NF3 \u00e9 um potente g\u00e1s de efeito estufa usado na ind\u00fastria eletr\u00f4nica para grava\u00e7\u00e3o e limpeza de plasma. Tem uma longa vida atmosf\u00e9rica e contribui para as mudan\u00e7as clim\u00e1ticas. Nome IUPAC Trifluoreto de nitrog\u00eanio F\u00f3rmula molecular NF3 N\u00famero CAS 7783-54-2 Sin\u00f4nimos Trifluoramina, fluoreto de nitrog\u00eanio (NF3), fluoreto de nitrog\u00eanio (1:3), &#8230; <a title=\"Trifluoreto de nitrog\u00eanio \u2013 nf3, 7783-54-2\" class=\"read-more\" href=\"https:\/\/chemuza.org\/pt\/trifluoreto-de-nitrogenio-nf3\/\" aria-label=\"Mais em Trifluoreto de nitrog\u00eanio \u2013 nf3, 7783-54-2\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-522","post","type-post","status-publish","format-standard","hentry","category-produtos-quimicos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Trifluoreto de nitrog\u00eanio - NF3, 7783-54-2<\/title>\n<meta name=\"description\" content=\"O trifluoreto de nitrog\u00eanio ou NF3 \u00e9 um potente g\u00e1s de efeito estufa usado na ind\u00fastria eletr\u00f4nica para grava\u00e7\u00e3o e limpeza de plasma. 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