{"id":52,"date":"2025-03-07T12:05:04","date_gmt":"2025-03-07T12:05:04","guid":{"rendered":"https:\/\/vivalr.com\/product\/52.html"},"modified":"2025-03-07T12:21:18","modified_gmt":"2025-03-07T12:21:18","slug":"factory-supply-15-diphenylcarbazide-cas-140-22-7-with-best-price","status":"publish","type":"product","link":"https:\/\/vivalr.com\/pt\/product\/52.html","title":{"rendered":"Fornecimento de f\u00e1brica 1,5-Difenilcarbazida CAS 140-22-7 com melhor pre\u00e7o"},"content":{"rendered":"<div class=\"user-guide\">\n<h1>1,5-Difenilcarbazida (CAS 140-22-7) - Guia do utilizador abrangente e fornecimento de f\u00e1brica<\/h1>\n<p>        <!-- Table of Contents --><\/p>\n<div class=\"toc\">\n<h2>\u00cdndice<\/h2>\n<ul>\n<li><a href=\"#basic-info\">1. Informa\u00e7\u00f5es de base<\/a><\/li>\n<li><a href=\"#applications\">2. Aplica\u00e7\u00f5es<\/a><\/li>\n<li><a href=\"#usage\">3. Instru\u00e7\u00f5es de utiliza\u00e7\u00e3o<\/a><\/li>\n<li><a href=\"#case-studies\">4. Estudos de casos de utiliza\u00e7\u00e3o<\/a><\/li>\n<li><a href=\"#contact\">5. Informa\u00e7\u00f5es de contacto<\/a><\/li>\n<\/ul><\/div>\n<p>        <!-- Basic Information --><\/p>\n<div id=\"basic-info\" class=\"section\">\n<h2>1. Informa\u00e7\u00f5es de base<\/h2>\n<ul>\n<li><strong>N\u00famero CAS:<\/strong> 140-22-7<\/li>\n<li><strong>F\u00f3rmula molecular:<\/strong> C<sub>13<\/sub>H<sub>12<\/sub>N<sub>4<\/sub>O<\/li>\n<li><strong>Peso molecular:<\/strong> 240,26 g\/mol<\/li>\n<li><strong>Apar\u00eancia:<\/strong> P\u00f3 cristalino branco a esbranqui\u00e7ado<\/li>\n<li><strong>Pureza:<\/strong> \u226598% (HPLC)<\/li>\n<li><strong>Armazenamento:<\/strong> Conservar em local fresco e seco, ao abrigo da luz e da humidade.<\/li>\n<\/ul><\/div>\n<p>        <!-- Applications --><\/p>\n<div id=\"applications\" class=\"section\">\n<h2>2. Aplica\u00e7\u00f5es<\/h2>\n<p>A 1,5-difenilcarbazida \u00e9 amplamente utilizada em:<\/p>\n<ul>\n<li><strong>Dete\u00e7\u00e3o de metais pesados:<\/strong> Reagente prim\u00e1rio para a determina\u00e7\u00e3o espectrofotom\u00e9trica de cr\u00f3mio (VI), merc\u00fario (II) e chumbo (II).<\/li>\n<li><strong>Monitoriza\u00e7\u00e3o ambiental:<\/strong> Detecta i\u00f5es de metais vestigiais na \u00e1gua, no solo e em res\u00edduos industriais.<\/li>\n<li><strong>An\u00e1lise farmac\u00eautica:<\/strong> Utilizado na titula\u00e7\u00e3o redox e na investiga\u00e7\u00e3o de s\u00edntese qu\u00edmica.<\/li>\n<li><strong>Laborat\u00f3rios de investiga\u00e7\u00e3o:<\/strong> Componente-chave em estudos que envolvem reac\u00e7\u00f5es de oxida\u00e7\u00e3o-redu\u00e7\u00e3o e qu\u00edmica de coordena\u00e7\u00e3o.<\/li>\n<\/ul><\/div>\n<p>        <!-- Usage Instructions --><\/p>\n<div id=\"usage\" class=\"section\">\n<h2>3. Instru\u00e7\u00f5es de utiliza\u00e7\u00e3o passo a passo<\/h2>\n<ol>\n<li><strong>Prepara\u00e7\u00e3o:<\/strong> Dissolver 0,1g de 1,5-Difenilcarbazida em 100mL de etanol para criar uma solu\u00e7\u00e3o 0,1%.<\/li>\n<li><strong>Rea\u00e7\u00e3o:<\/strong> Adicionar a solu\u00e7\u00e3o \u00e0 amostra que cont\u00e9m i\u00f5es met\u00e1licos alvo. Ajustar o pH a 1,5-2,0 utilizando \u00e1cido sulf\u00farico para uma rea\u00e7\u00e3o cromog\u00e9nica \u00f3ptima.<\/li>\n<li><strong>Medi\u00e7\u00e3o:<\/strong> Utilizar um espetrofot\u00f3metro para medir a absorv\u00e2ncia a 540 nm (para o Cr(VI)) ou 490 nm (para o Hg(II)).<\/li>\n<li><strong>Seguran\u00e7a:<\/strong> Usar EPI (luvas, \u00f3culos de prote\u00e7\u00e3o) e trabalhar numa \u00e1rea bem ventilada. Evitar a inala\u00e7\u00e3o ou o contacto direto.<\/li>\n<li><strong>Armazenamento:<\/strong> Conservar o reagente num recipiente herm\u00e9tico a 2-8\u00b0C para uma estabilidade a longo prazo.<\/li>\n<\/ol><\/div>\n<p>        <!-- Case Studies --><\/p>\n<div id=\"case-studies\" class=\"section\">\n<h2>4. Estudos de casos de utiliza\u00e7\u00e3o<\/h2>\n<h3>Caso 1: Dete\u00e7\u00e3o de cr\u00f3mio hexavalente na \u00e1gua<\/h3>\n<p><strong>Procedimento:<\/strong><\/p>\n<ol>\n<li>Preparar uma solu\u00e7\u00e3o 0,1% de 1,5-difenilcarbazida em etanol.<\/li>\n<li>Acidificar 50 ml de amostra de \u00e1gua com H<sub>2<\/sub>SO<sub>4<\/sub> para pH 1,5.<\/li>\n<li>Adicionar 2mL de reagente, misturar e aguardar 10 minutos para o desenvolvimento da cor.<\/li>\n<li>Medir a absorv\u00e2ncia a 540nm. Calcular a concentra\u00e7\u00e3o de Cr(VI) utilizando uma curva de calibra\u00e7\u00e3o (limite de dete\u00e7\u00e3o: 0,01mg\/L).<\/li>\n<\/ol>\n<h3>Caso 2: Quantifica\u00e7\u00e3o de merc\u00fario em amostras de solo<\/h3>\n<ol>\n<li>Digerir 1g de solo com HNO<sub>3<\/sub>\/HCl e filtrar.<\/li>\n<li>Ajustar o filtrado a pH 2,0 e adicionar 3 ml de solu\u00e7\u00e3o reagente.<\/li>\n<li>Medir a absorv\u00e2ncia a 490nm ap\u00f3s 15 minutos. Gama linear: 0,05-5,0mg\/kg.<\/li>\n<\/ol><\/div>\n<p>        <!-- Contact --><\/p>\n<div id=\"contact\" class=\"section\">\n<h2>5. Informa\u00e7\u00f5es de contacto<\/h2>\n<p>Para quest\u00f5es t\u00e9cnicas ou encomendas por grosso:<\/p>\n<ul>\n<li>Correio eletr\u00f3nico: <a href=\"mailto:info@vivalr.com\">info@vivalr.com<\/a><\/li>\n<li>Telefone: <a href=\"tel:+8615866781826\">(86) 15866781826<\/a><\/li>\n<\/ul>\n<p><em>Nota:<\/em> S\u00edntese personalizada e servi\u00e7os OEM dispon\u00edveis. Solicitar MSDS e COA por correio eletr\u00f3nico.<\/p>\n<\/p><\/div>\n<\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>1,5-Difenilcarbazida (CAS 140-22-7) - Guia do utilizador abrangente e fornecimento de f\u00e1brica \u00cdndice 1. informa\u00e7\u00e3o b\u00e1sica 2. Aplica\u00e7\u00f5es 3. Instru\u00e7\u00f5es de utiliza\u00e7\u00e3o 4. Estudos de casos de utiliza\u00e7\u00e3o 5. Informa\u00e7\u00f5es de contacto 1. Informa\u00e7\u00f5es b\u00e1sicas N\u00famero CAS: 140-22-7 F\u00f3rmula molecular: C13H12N4O Peso Molecular: 240.26 g\/mol Apar\u00eancia: P\u00f3 cristalino branco a esbranqui\u00e7ado Pureza: \u226598% (HPLC) Armazenamento: Armazenar em local fresco, [...]<\/p>","protected":false},"featured_media":21210,"comment_status":"closed","ping_status":"open","template":"","meta":[],"product_brand":[],"product_cat":[15],"product_tag":[],"class_list":{"0":"post-52","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-uncategorized","8":"first","9":"instock","10":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.4 (Yoast SEO v25.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Factory Supply 1,5-Diphenylcarbazide CAS 140-22-7 With Best Price - Welcome to VIVALR- Your Trusted Source for Chemical Raw Materials\uff01<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vivalr.com\/pt\/product\/52.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Factory Supply 1,5-Diphenylcarbazide CAS 140-22-7 With Best Price\" \/>\n<meta property=\"og:description\" content=\"1,5-Diphenylcarbazide (CAS 140-22-7) - Comprehensive User Guide &amp; Factory Supply Table of Contents 1. 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