{"id":12354,"date":"2026-02-12T03:28:13","date_gmt":"2026-02-12T03:28:13","guid":{"rendered":"https:\/\/rawchemicalmart.com\/what-is-yellow-iron-oxide\/"},"modified":"2026-02-12T10:39:44","modified_gmt":"2026-02-12T10:39:44","slug":"que-es-el-oxido-de-hierro-amarillo","status":"publish","type":"post","link":"https:\/\/rawchemicalmart.com\/es\/que-es-el-oxido-de-hierro-amarillo\/","title":{"rendered":"\u00bfQu\u00e9 es el \u00f3xido de hierro amarillo? Propiedades, usos y grados (Gu\u00eda 2026)"},"content":{"rendered":"<p><strong>\u00d3xido de hierro amarillo<\/strong> El hidrato de \u00f3xido f\u00e9rrico es uno de los pigmentos inorg\u00e1nicos m\u00e1s vers\u00e1tiles y utilizados en el mundo. Conocido por su color brillante, su excelente resistencia a la intemperie y su estabilidad qu\u00edmica, desempe\u00f1a un papel fundamental en industrias que van desde la construcci\u00f3n y los recubrimientos hasta los pl\u00e1sticos y el caucho.<\/p>\n\n\n\n<p>Tanto si eres un ingeniero qu\u00edmico que busca especificaciones t\u00e9cnicas como si eres un responsable de compras que adquiere materias primas, esta gu\u00eda abarca todo lo que necesitas saber sobre el \u00f3xido de hierro amarillo, desde su estructura qu\u00edmica hasta sus aplicaciones industriales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u00bfQu\u00e9 es el \u00f3xido de hierro amarillo? (Definici\u00f3n y qu\u00edmica)<\/h2>\n\n\n\n<p>Qu\u00edmicamente, el \u00f3xido de hierro amarillo es un \u00f3xido f\u00e9rrico hidratado con la f\u00f3rmula <strong>Fe2O3\u00b7H2O<\/strong> (a veces escrito como FeOOH). En la industria de los pigmentos, se le conoce com\u00fanmente como <strong>Pigmento Amarillo 42 (PY42)<\/strong>.<\/p>\n\n\n\n<p>A diferencia de los ocres naturales, el \u00f3xido de hierro amarillo sint\u00e9tico utilizado en la industria moderna se fabrica para tener una alta pureza, un tama\u00f1o de part\u00edcula uniforme y una intensidad de color constante.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Identidad qu\u00edmica clave<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nombre qu\u00edmico<\/strong>: \u00d3xido de hierro (III) monohidrato<\/li>\n\n\n\n<li><strong>Nombre com\u00fan<\/strong>: \u00d3xido de hierro amarillo<\/li>\n\n\n\n<li><strong>N\u00famero CAS<\/strong>: 51274-00-1<\/li>\n\n\n\n<li><strong>N\u00famero EINECS<\/strong>: 257-098-5<\/li>\n\n\n\n<li><strong>F\u00f3rmula molecular<\/strong>: Fe2O3\u00b7H2O \/ \u03b1-FeOOH<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. Propiedades f\u00edsicas y qu\u00edmicas<\/h2>\n\n\n\n<p>\u00bfPor qu\u00e9 es tan popular este pigmento? La clave est\u00e1 en su estabilidad. El \u00f3xido de hierro amarillo no es t\u00f3xico, no desti\u00f1e y es resistente a \u00e1lcalis y \u00e1cidos suaves. Adem\u00e1s, es completamente insoluble en agua y disolventes org\u00e1nicos.<\/p>\n\n\n\n<p>A continuaci\u00f3n se muestra una ficha t\u00e9cnica t\u00edpica para el \u00f3xido de hierro amarillo de grado industrial est\u00e1ndar:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Propiedad<\/strong><\/td><td><strong>Valor t\u00edpico<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Apariencia<\/strong><\/td><td>Polvo amarillo fino<\/td><\/tr><tr><td><strong>Contenido de Fe2O3<\/strong><\/td><td>\u2265 86%<\/td><\/tr><tr><td><strong>Absorci\u00f3n de aceite<\/strong><\/td><td>25-35 ml\/100 g<\/td><\/tr><tr><td><strong>Residuo en malla 325<\/strong><\/td><td>\u2264 0,3%<\/td><\/tr><tr><td><strong>Humedad (vol\u00e1til a 105 \u00b0C)<\/strong><\/td><td>\u2264 1.0%<\/td><\/tr><tr><td><strong>Valor de pH<\/strong><\/td><td>3,5 \u2013 7,0<\/td><\/tr><tr><td><strong>Resistencia al calor<\/strong><\/td><td>Hasta 180 \u00b0C (356 \u00b0F)<\/td><\/tr><tr><td><strong>Solidez a la luz<\/strong><\/td><td>Grado 7-8 (Excelente)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><em>Nota: Los valores espec\u00edficos pueden variar ligeramente seg\u00fan el fabricante y el grado espec\u00edfico.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u00bfC\u00f3mo se fabrica el \u00f3xido de hierro amarillo?<\/h2>\n\n\n\n<p>Si bien existen yacimientos naturales, la demanda industrial se satisface mediante la producci\u00f3n sint\u00e9tica para garantizar la uniformidad de la calidad.<\/p>\n\n\n\n<p>El m\u00e9todo de fabricaci\u00f3n m\u00e1s com\u00fan es el <strong>Proceso de precipitaci\u00f3n<\/strong> (A menudo mediante el proceso Penniman-Zoph). Este proceso implica la oxidaci\u00f3n de sales de hierro y hierro met\u00e1lico en un medio \u00e1cido. Al controlar rigurosamente la temperatura de reacci\u00f3n, el pH y la velocidad de oxidaci\u00f3n, los fabricantes pueden ajustar el tama\u00f1o de las part\u00edculas, lo que influye directamente en el tono de amarillo (que var\u00eda desde un amarillo lim\u00f3n p\u00e1lido hasta un amarillo anaranjado intenso).<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>M\u00e1s informaci\u00f3n:<\/strong> Para un an\u00e1lisis detallado de la s\u00edntesis y las reacciones qu\u00edmicas, lea nuestro an\u00e1lisis en profundidad sobre <strong><a href=\"https:\/\/rawchemicalmart.com\/es\/como-fabricar-oxido-de-hierro-amarillo\/\">C\u00f3mo fabricar \u00f3xido de hierro amarillo<\/a><\/strong><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">4. Grados industriales: Especificaciones del polvo<\/h2>\n\n\n\n<p>No todos los \u00f3xidos de hierro amarillos son iguales. Seg\u00fan la aplicaci\u00f3n final, deber\u00e1 elegir el grado adecuado. Esta secci\u00f3n sustituye la necesidad de una gu\u00eda aparte sobre \u201cpolvos industriales\u201d al desglosar aqu\u00ed las categor\u00edas clave.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">A. Grado para pinturas y recubrimientos (micronizado)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Caracter\u00edsticas<\/strong>Tama\u00f1o de part\u00edcula ultrafino, alta dispersibilidad y alto poder colorante.<\/li>\n\n\n\n<li><strong>\u00bfPor qu\u00e9 usarlo?<\/strong>Evita la floculaci\u00f3n (formaci\u00f3n de grumos) en las pinturas l\u00edquidas y proporciona un acabado liso y brillante.<\/li>\n\n\n\n<li><strong>Tama\u00f1o de la malla<\/strong>: A menudo pasa a trav\u00e9s de tamices mucho m\u00e1s finos que la malla 325.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">B. Grado de construcci\u00f3n (est\u00e1ndar)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Caracter\u00edsticas<\/strong>: Econ\u00f3mico, con gran poder colorante y excelente resistencia a los \u00e1lcalis.<\/li>\n\n\n\n<li><strong>\u00bfPor qu\u00e9 usarlo?<\/strong>Debe resistir el entorno altamente alcalino del cemento y el hormig\u00f3n sin decolorarse.<\/li>\n\n\n\n<li><strong>Solicitud<\/strong>: Adoquines, tejas y estuco.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Grado C. Resistente al calor<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Caracter\u00edsticas<\/strong>: Tratado especialmente (a menudo encapsulado) para soportar temperaturas m\u00e1s elevadas.<\/li>\n\n\n\n<li><strong>Limitaci\u00f3n<\/strong>El \u00f3xido de hierro amarillo est\u00e1ndar comienza a deshidratarse y a tornarse rojo (convirti\u00e9ndose en \u00f3xido de hierro rojo) a aproximadamente 180 \u00b0C.<\/li>\n\n\n\n<li><strong>\u00bfPor qu\u00e9 usarlo?<\/strong>: Necesario para masterbatches de pl\u00e1stico (PE, PP) procesados a altas temperaturas.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. Principales aplicaciones y usos<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Recubrimientos y pinturas<\/h3>\n\n\n\n<p>Este es uno de los mercados m\u00e1s grandes para el \u00f3xido de hierro amarillo. Se utiliza en:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pinturas arquitect\u00f3nicas<\/strong>Pinturas para paredes exteriores e interiores.<\/li>\n\n\n\n<li><strong>Recubrimientos industriales<\/strong>: Imprimaciones antioxidantes (debido a su inercia qu\u00edmica).<\/li>\n\n\n\n<li><strong>Recubrimientos en polvo<\/strong>: Proporciona un color duradero para el acabado de metales.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Materiales de construcci\u00f3n<\/h3>\n\n\n\n<p>Debido a que el \u00f3xido de hierro es qu\u00edmicamente inerte y resistente a los rayos UV, es el pigmento est\u00e1ndar para colorear el hormig\u00f3n. Se utiliza ampliamente en:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ladrillos y adoquines entrelazados.<\/li>\n\n\n\n<li>Suelos de hormig\u00f3n coloreado.<\/li>\n\n\n\n<li>Tejas para tejados.<\/li>\n\n\n\n<li>M\u00e1rmol artificial y terrazo.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Pl\u00e1sticos y caucho<\/h3>\n\n\n\n<p>Se utiliza como colorante en productos pl\u00e1sticos, ofreciendo buena opacidad y protecci\u00f3n contra la luz. Es com\u00fan encontrarlo en concentrados de color para materiales de embalaje, revestimientos de vinilo y suelos de caucho.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Seguridad, manipulaci\u00f3n y almacenamiento<\/h2>\n\n\n\n<p>El \u00f3xido de hierro amarillo se considera generalmente seguro y no t\u00f3xico. Sin embargo, como ocurre con cualquier polvo industrial fino, es fundamental manipularlo correctamente para evitar la inhalaci\u00f3n de polvo.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>EPI<\/strong>Los trabajadores deben usar mascarillas antipolvo y gafas de seguridad.<\/li>\n\n\n\n<li><strong>Almacenamiento<\/strong>Almacenar en un lugar fresco y seco, alejado de la humedad. Mantener las bolsas selladas cuando no se utilicen.<\/li>\n\n\n\n<li><strong>Duraci\u00f3n<\/strong>: Si se almacena correctamente, tiene una vida \u00fatil indefinida, aunque la recomendaci\u00f3n est\u00e1ndar para un rendimiento de dispersi\u00f3n \u00f3ptimo es de 2 a 3 a\u00f1os.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Seguridad ante todo:<\/strong> Para obtener datos detallados sobre toxicidad y protocolos de manejo, consulte nuestro art\u00edculo sobre <strong><a href=\"https:\/\/rawchemicalmart.com\/es\/seguridad-del-oxido-de-hierro-amarillo\/\">Seguridad del \u00f3xido de hierro amarillo<\/a><\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusi\u00f3n<\/h2>\n\n\n\n<p>El \u00f3xido de hierro amarillo es un pigmento indispensable para la industria moderna, ya que combina rendimiento y rentabilidad. Tanto si se formula un nuevo recubrimiento resistente a los rayos UV como si se fabrican adoquines de hormig\u00f3n coloreados, comprender las propiedades y los grados de este material es clave para el \u00e9xito del producto.<\/p>\n\n\n\n<p><strong>\u00bfBusca \u00f3xido de hierro amarillo de alta calidad?<\/strong> P\u00f3ngase en contacto con nosotros hoy mismo para solicitar un presupuesto o una muestra de nuestros pigmentos de calidad industrial.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p class=\"tmnf_excerpt\">Gu\u00eda completa sobre el \u00f3xido de hierro amarillo (CAS 51274-00-1). Descubra sus propiedades qu\u00edmicas, proceso de fabricaci\u00f3n, grados de polvo industrial y aplicaciones en recubrimientos y construcci\u00f3n.\n<\/p>","protected":false},"author":3,"featured_media":12349,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62],"tags":[],"class_list":["post-12354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iron-oxide-pigment"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Yellow Iron Oxide? Properties, Uses &amp; Grades (2026 Guide)<\/title>\n<meta name=\"description\" content=\"Comprehensive guide to Yellow Iron Oxide (CAS 51274-00-1). 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