{"id":826,"date":"2022-01-16T17:45:16","date_gmt":"2022-01-16T15:45:16","guid":{"rendered":"https:\/\/aitanachem.com\/solid-surface\/aluminum-trihydrate-ath\/"},"modified":"2026-07-29T17:38:21","modified_gmt":"2026-07-29T15:38:21","slug":"aluminum-trihydrate-ath","status":"publish","type":"page","link":"https:\/\/aitanachem.com\/en\/solid-surface\/aluminum-trihydrate-ath\/","title":{"rendered":"Aluminium trihydrate (ATH) for solid surface manufacturing"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"826\" class=\"elementor elementor-826 elementor-128\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6a546780 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6a546780\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container 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85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-96bad9a elementor-align-left elementor-widget elementor-widget-global elementor-global-1065 elementor-global-643 elementor-widget-breadcrumbs\" data-id=\"96bad9a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/aitanachem.com\/en\/\">Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2292d0d elementor-widget elementor-widget-text-editor\" data-id=\"2292d0d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Aluminium trihydrate (ATH) is the <strong>most widely used mineral filler in the solid surface industry<\/strong>. Unlike other conventional mineral fillers such as calcium carbonates or dolomite, aluminium trihydrate has a refractive index virtually identical to that of <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/iso-npg-resin\/\" target=\"_blank\" rel=\"noopener\"><strong><u>ISO-NPG resin<\/u><\/strong><\/a>. This optical matching provides solid surface with its signature translucent natural stone appearance, enabling pure white tones and a depth of color unattainable with other mineral fillers<span data-path-to-node=\"16,2\">.<\/span> <strong>At AITANACHEM we supply high-grade ATH filler specifically selected for premium solid surface casting.<\/strong> High-purity ATH mineral filler featuring superior whiteness, controlled particle size distribution, and optical refractive matching for pure, durable, and renewable solid surface production.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0fe4c27 elementor-widget elementor-widget-image\" data-id=\"0fe4c27\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"800\" src=\"https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/ath.webp\" class=\"attachment-medium_large size-medium_large wp-image-719\" alt=\"ath\" srcset=\"https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/ath.webp 600w, https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/ath-225x300.webp 225w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-715ab5d elementor-widget elementor-widget-heading\" data-id=\"715ab5d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is Aluminium Trihydrate (ATH)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4a0d98 elementor-widget elementor-widget-text-editor\" data-id=\"c4a0d98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u201cATH\u201d stands for <strong>aluminium tri-hydrate<\/strong> (aluminium trihydrate). Chemically classified as aluminium hydroxide, Al(OH)\u2083 \u2014also expressed as Al\u2082O\u2083\u00b73H\u2082O\u2014, it consists of alumina bound with three water molecules. It presents as <strong>a fine white powder of high purity that provides exceptional whiteness and great optical translucency.<\/strong> These physical properties are highly valued and make ATH the <strong>ideal mineral filler for accurately reproducing rich color palettes in solid surface formulations.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ac79f5 elementor-widget elementor-widget-heading\" data-id=\"6ac79f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Advantages of ATH Filler in Solid Surface Manufacturing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-351fff5 elementor-widget elementor-widget-text-editor\" data-id=\"351fff5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Compared to alternative mineral fillers, <strong>aluminum trihydrate offers distinct operational advantages during casting and in the finished solid surface product:<\/strong><\/p>\n<ul>\n<li data-path-to-node=\"24,0,0\"><span data-path-to-node=\"24,0,0,0\"> <strong data-path-to-node=\"24,0,0,0\" data-index-in-node=\"0\">High Chemical Resistance:<\/strong> Excellent tolerance to household chemicals and mild acidic agents. <\/span><\/li>\n<li data-path-to-node=\"24,1,0\"><span data-path-to-node=\"24,1,0,0\"> <strong data-path-to-node=\"24,1,0,0\" data-index-in-node=\"0\">Easy Repairability and Sanding:<\/strong> Allows finished cast parts to be fully repaired and restored to their original surface finish. ATH provides optimal hardness, ensuring the final composite is solid, non-porous, and 100% renewable. <\/span><\/li>\n<li data-path-to-node=\"24,2,0\"><span data-path-to-node=\"24,2,0,0\"> <strong data-path-to-node=\"24,2,0,0\" data-index-in-node=\"0\">Whiteness and Optical Translucency:<\/strong> Facilitates clean, vibrant, and faithful color matching. <\/span><\/li>\n<li><strong data-path-to-node=\"24,3,0,0\" data-index-in-node=\"0\"><span data-path-to-node=\"24,3,0,0\">Synergy with Secondary Fillers:<\/span><\/strong> Blends effectively with other fillers; for instance, combining ATH with Boehmite enhances scratch resistance, surface gloss, and stain resistance in the final product<span data-path-to-node=\"24,3,0,2\">.<\/span><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f199731 elementor-widget elementor-widget-heading\" data-id=\"f199731\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Select the Right ATH Filler for Your Production Line<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b3abe1 elementor-widget elementor-widget-text-editor\" data-id=\"8b3abe1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The mineral filler has a direct impact on the process: <strong>it governs viscosity, affects catalysis kinetics, can cause shrinkage, and modifies final aesthetic appearance<\/strong><span data-path-to-node=\"28,2\"><strong> and final colour.<\/strong> Key technical criteria to choose the most suitable ATH include<\/span><span data-path-to-node=\"28,4\">:<\/span><\/p>\n<ul>\n<li data-path-to-node=\"29,0,0\"><span data-path-to-node=\"29,0,0,0\"> <strong data-path-to-node=\"29,0,0,0\" data-index-in-node=\"0\">Particle Size Distribution (Granulometry):<\/strong> Very coarse particles tend to sink to the bottom of the mould, whereas excessively fine particles increase resin demand and hinder dispersion. An optimized particle-size distribution ensures optimal dispersion of the mass, reducing casting viscosity and facilitating smooth mould injection. <\/span><\/li>\n<li data-path-to-node=\"29,1,0\"><span data-path-to-node=\"29,1,0,0\"> <strong data-path-to-node=\"29,1,0,0\" data-index-in-node=\"0\">Particle Morphology (grinding) and Wetting:<\/strong> Particle shape influences resin absorption. Engineered grain selection and surface treatment facilitate rapid particle wetting by the resin, preventing agglomerate formation and shortening cycle mixing times. <\/span><\/li>\n<li data-path-to-node=\"29,2,0\"><span data-path-to-node=\"29,2,0,0\"> <strong data-path-to-node=\"29,2,0,0\" data-index-in-node=\"0\">High Whiteness and Purity (No Black Spots):<\/strong> Metal contaminants (Fe, Ni, Cu) in the ATH cause unsightly black spots or dark specks in finished parts. At AITANACHEM, we supply ATH with a whiteness index exceeding 96, providing a clean base for uniform color when blended with <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/pigment-pastes\/\" target=\"_blank\" rel=\"noopener\"><strong><u>concentrated pigment pastes<\/u><\/strong><\/a>. <\/span><\/li>\n<li><strong data-path-to-node=\"29,3,0,0\" data-index-in-node=\"0\"><span data-path-to-node=\"29,3,0,0\">Silanization Treatment:<\/span><\/strong> Surface treatment with silane coupling agents improves filler dispersion and matrix translucency, boosts thermal shock and water vapor resistance, lowers thermal expansion, and shortens gel and curing times<span data-path-to-node=\"29,3,0,2\">.<\/span><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1583bd3 elementor-widget elementor-widget-heading\" data-id=\"1583bd3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">AITANACHEM: On-Site Formulation Optimization and Mineral Filler Adjustment<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82fd78c elementor-widget elementor-widget-text-editor\" data-id=\"82fd78c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>At <strong data-path-to-node=\"34,0\" data-index-in-node=\"3\">AITANACHEM<\/strong>, we assist engineering teams in selecting the most suitable mineral filler based on your equipment and product portfolio<span data-path-to-node=\"34,2\">:<\/span><\/p>\n<ul>\n<li data-path-to-node=\"35,0,0\"><span data-path-to-node=\"35,0,0,0\"> <strong data-path-to-node=\"35,0,0,0\" data-index-in-node=\"0\">Viscosity Testing:<\/strong> we determine the maximum amount of mineral filler your resin can take without compromising the fluidity of the mix or generating air bubbles or micro-porosity. <\/span><\/li>\n<li data-path-to-node=\"35,1,0\"><span data-path-to-node=\"35,1,0,0\"> <strong data-path-to-node=\"35,1,0,0\" data-index-in-node=\"0\">Local Filler Compatibility:<\/strong> we assess the possibility of combining a high-whiteness ATH with local mineral fillers to reduce overall raw material supply and freight costs. <\/span><\/li>\n<li><strong data-path-to-node=\"35,2,0,0\" data-index-in-node=\"0\"><span data-path-to-node=\"35,2,0,0\">Vacuum Degassing Guidance:<\/span><\/strong> we guide you in adjusting degassing times to ensure cast parts that are 100% porosity-free.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a94e344 elementor-widget elementor-widget-heading\" data-id=\"a94e344\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions about Aluminium Trihydrate (ATH)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1593aa elementor-widget elementor-widget-accordion\" data-id=\"f1593aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-2531\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2531\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What does ATH stand for, and what is its chemical formula?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-2531\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2531\"><p>\u201cATH\u201d stands for aluminium tri-hydrate. Chemically known as aluminum hydroxide &#8211; Al(OH)\u2083, <strong>ATH is a fine white mineral powder used as the primary filler in solid surface manufacturing due to its whiteness, translucency, and sandability.<\/strong><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-2532\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-2532\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Why is ATH preferred over calcium carbonate or dolomite in solid surface casting?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-2532\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-2532\"><p>Calcium carbonate and dolomite are opaque minerals; they do not allow the renewable polishing characteristic of solid surface and are sensitive to attack by household acids. <strong>ATH has a refractive index close to polyester resin, providing depth of color, chemical resistance, and the ability to repair scratches <\/strong>by sanding.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-2533\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-2533\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">How does particle size (granulometry) affect the manufacturing process?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-2533\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-2533\"><p>An excessively fine particle size dramatically increases resin\u2019s viscosity, making impossible to add a high percentage of mineral filler to the mix. Conversely, coarse grains decant to the bottom of the mould before the gel point is reached<span data-path-to-node=\"44,4\">. <strong>At AITANACHEM we supply balanced granulometries that optimise viscosity and prevent particle settling.<\/strong><\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-2534\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-2534\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What causes black spots in cast solid surface parts?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-2534\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-2534\"><p><strong>Black spots are typically caused by metallic impurities in raw mineral fillers<\/strong><span data-path-to-node=\"46,2\"><strong>.<\/strong> A simple quality test involves passing a high-power magnet over the dry ATH powder before and after processing through machinery to check for magnetic particles<\/span><span data-path-to-node=\"46,4\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-2535\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-2535\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Does ATH expire or require special storage conditions?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-2535\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-2535\"><p>ATH is a chemically stable mineral that does not expire. However, it must be stored in a dry, it must be stored in a dry, sealed environment to prevent moisture absorption, as free water in the filler negatively impacts resin catalysis<span data-path-to-node=\"48,4\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does ATH stand for, and what is its chemical formula?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>\\u201cATH\\u201d stands for aluminium tri-hydrate. Chemically known as aluminum hydroxide &#8211; Al(OH)\\u2083, <strong>ATH is a fine white mineral powder used as the primary filler in solid surface manufacturing due to its whiteness, translucency, and sandability.<\\\/strong><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Why is ATH preferred over calcium carbonate or dolomite in solid surface casting?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Calcium carbonate and dolomite are opaque minerals; they do not allow the renewable polishing characteristic of solid surface and are sensitive to attack by household acids. <strong>ATH has a refractive index close to polyester resin, providing depth of color, chemical resistance, and the ability to repair scratches <\\\/strong>by sanding.<\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"How does particle size (granulometry) affect the manufacturing process?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>An excessively fine particle size dramatically increases resin\\u2019s viscosity, making impossible to add a high percentage of mineral filler to the mix. Conversely, coarse grains decant to the bottom of the mould before the gel point is reached<span data-path-to-node=\\\"44,4\\\">. <strong>At AITANACHEM we supply balanced granulometries that optimise viscosity and prevent particle settling.<\\\/strong><\\\/span><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"What causes black spots in cast solid surface parts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><strong>Black spots are typically caused by metallic impurities in raw mineral fillers<\\\/strong><span data-path-to-node=\\\"46,2\\\"><strong>.<\\\/strong> A simple quality test involves passing a high-power magnet over the dry ATH powder before and after processing through machinery to check for magnetic particles<\\\/span><span data-path-to-node=\\\"46,4\\\">.<\\\/span><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Does ATH expire or require special storage conditions?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>ATH is a chemically stable mineral that does not expire. However, it must be stored in a dry, it must be stored in a dry, sealed environment to prevent moisture absorption, as free water in the filler negatively impacts resin catalysis<span data-path-to-node=\\\"48,4\\\">.<\\\/span><\\\/p>\\n\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78f38ff elementor-widget elementor-widget-heading\" data-id=\"78f38ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ATH as a Flame Retardant (other applications)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e409d9c elementor-widget elementor-widget-text-editor\" data-id=\"e409d9c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Beyond its aesthetic and structural role in solid surface casting, aluminium trihydrate is globally recognised as an <strong>eco-friendly flame retardant and smoke suppressant<\/strong> <strong>in the broader plastics and composites industry.<\/strong><\/p>\n<p>When exposed to elevated temperatures (starting at approximately 200 \u00b0C), ATH undergoes an endothermic decomposition reaction, releasing approximately 34.5% of its weight as water vapor. This endothermic process <strong>absorbs heat from the fire source, cools the polymer matrix, dilutes flammable gases, and quenches flames without emitting toxic or corrosive fumes.<\/strong> This makes ATH an indispensable additive in industries governed by strict fire safety regulations. If you are interested in exploring other mineral fillers and their applications, visit our page on <a href=\"https:\/\/aitanachem.com\/en\/mineral-fillers-for-composite\/\" target=\"_blank\" rel=\"noopener\"><strong><u>mineral fillers for composites<\/u><\/strong><\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34a485f elementor-widget elementor-widget-heading\" data-id=\"34a485f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Do You Need the Right ATH Filler for Your Production Line?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1247d3b elementor-widget elementor-widget-text-editor\" data-id=\"1247d3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Whether you want <strong>to optimize part whiteness, lower viscosity<\/strong>, or request laboratory samples of aluminum trihydrate for trials, our technical engineering team is at your disposal<span data-path-to-node=\"57,2\">. <a href=\"https:\/\/aitanachem.com\/en\/contact\/\" target=\"_blank\" rel=\"noopener\"><strong><u>Contact us<\/u><\/strong><\/a> today and we will recommend the ATH mineral filler grade best suited to your production requirements<\/span><span data-path-to-node=\"57,4\">.<\/span><\/p>\n<p>To better understand how to integrate ATH filler within a complete manufacturing project, review our master guide on <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/\" target=\"_blank\" rel=\"noopener\"><strong><u>solid surface<\/u><\/strong><\/a> raw materials and technical support.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79a6dff elementor-share-buttons--skin-flat elementor-share-buttons--shape-rounded elementor-share-buttons--view-icon-text elementor-grid-0 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2.8 3.7 39.1 59.7 94.8 83.8 35.2 15.2 49 16.5 66.6 13.9 10.7-1.6 32.8-13.4 37.4-26.4 4.6-13 4.6-24.1 3.2-26.4-1.3-2.5-5-3.9-10.5-6.6z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tWhatsApp\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_email\" role=\"button\" tabindex=\"0\" aria-label=\"Share on email\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-envelope\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Twitter Share Pin WhatsApp Email Aluminium trihydrate (ATH) is the most widely used mineral filler in the solid surface industry. Unlike other conventional mineral fillers such as calcium carbonates or dolomite, aluminium trihydrate has a refractive index virtually identical to that of ISO-NPG resin. This optical matching provides solid surface with its signature translucent natural [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":822,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"plain-container","ast-site-content-layout":"normal-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-826","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Aluminium trihydrate (ATH filler) for solid surface | AITANACHEM<\/title>\n<meta name=\"description\" content=\"Aluminium trihydrate (ATH): the mineral filler for solid surface manufacturing. 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