{"id":10093,"date":"2026-03-17T16:59:12","date_gmt":"2026-03-17T09:59:12","guid":{"rendered":"https:\/\/chemicalexpressth.com\/?p=10093"},"modified":"2026-08-11T15:38:14","modified_gmt":"2026-08-11T08:38:14","slug":"auxiliaries-karl-fischer-titration-merck","status":"publish","type":"post","link":"https:\/\/chemicalexpressth.com\/th\/articles\/product-guide-articles\/auxiliaries-karl-fischer-titration-merck\/","title":{"rendered":"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination"},"content":{"rendered":"<style>  .chx-standalone-article h1 {       color: #222 !important;       line-height: 1.2 !important;       font-weight: bold !important;       text-align: center !important;       margin-top: 40px !important;       margin-bottom: 30px !important;      text-transform: none !important;   }  .chx-standalone-article h2 {      color: #24326d !important;      font-weight: bold !important; 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}  }<\/style>\n<div class=\"chx-standalone-article\">\n<div data-elementor-type=\"wp-post\" data-elementor-id=\"10093\" class=\"elementor elementor-10093\" data-elementor-post-type=\"post\">\n<div class=\"elementor-element elementor-element-251af1f3 e-flex e-con-boxed e-con e-parent\" data-id=\"251af1f3\" data-element_type=\"container\" data-e-type=\"container\">\n<div class=\"e-con-inner\">\n<div class=\"elementor-element elementor-element-62587f98 elementor-widget elementor-widget-text-editor\" data-id=\"62587f98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<h1>Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination<\/h1>\n<div style=\"margin-bottom: 32px; text-align: center;\"><img decoding=\"async\" class=\"lazyload\" style=\"width: 100%; max-width: 800px; height: auto; border-radius: 0px !important;\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/chemicalexpressth.com\/wp-content\/uploads\/2026\/03\/Auxiliaries-for-Karl-Fischer-Titration-by-Merck-Buffer-Solutions-Salicylic-Acid-Imidazole-Benzoic-Acid-and-Molecular-Sieves-for-Accurate-Water-Determination.png\" alt=\"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination\" \/><noscript><img decoding=\"async\" class=\"lazyload lazyload\" style=\"width: 100%; max-width: 800px; height: auto; border-radius: 0px !important;\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/chemicalexpressth.com\/wp-content\/uploads\/2026\/03\/Auxiliaries-for-Karl-Fischer-Titration-by-Merck-Buffer-Solutions-Salicylic-Acid-Imidazole-Benzoic-Acid-and-Molecular-Sieves-for-Accurate-Water-Determination.png\" alt=\"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination\" \/><noscript><img decoding=\"async\" class=\"lazyload lazyload lazyload\" style=\"width: 100%; max-width: 800px; height: auto; border-radius: 0px !important;\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/chemicalexpressth.com\/wp-content\/uploads\/2026\/03\/Auxiliaries-for-Karl-Fischer-Titration-by-Merck-Buffer-Solutions-Salicylic-Acid-Imidazole-Benzoic-Acid-and-Molecular-Sieves-for-Accurate-Water-Determination.png\" alt=\"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination\" \/><noscript><img data-src=\"https:\/\/chemicalexpressth.com\/wp-content\/uploads\/2026\/03\/Auxiliaries-for-Karl-Fischer-Titration-by-Merck-Buffer-Solutions-Salicylic-Acid-Imidazole-Benzoic-Acid-and-Molecular-Sieves-for-Accurate-Water-Determination.png\" decoding=\"async\" class=\"lazyload lazyload lazyload\" style=\"width: 100%; max-width: 800px; height: auto; border-radius: 0px !important;\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination\" \/><noscript><img decoding=\"async\" class=\"lazyload lazyload lazyload\" style=\"width: 100%; max-width: 800px; height: auto; border-radius: 0px !important;\" src=\"https:\/\/chemicalexpressth.com\/wp-content\/uploads\/2026\/03\/Auxiliaries-for-Karl-Fischer-Titration-by-Merck-Buffer-Solutions-Salicylic-Acid-Imidazole-Benzoic-Acid-and-Molecular-Sieves-for-Accurate-Water-Determination.png\" alt=\"Auxiliaries for Karl Fischer Titration by Merck: Buffer Solutions, Salicylic Acid, Imidazole, Benzoic Acid and Molecular Sieves for Accurate Water Determination\"><\/noscript><\/noscript><\/noscript><\/noscript><\/div>\n<p>Reliable water determination in analytical chemistry depends on complete sample dissolution and maintaining optimal pH. Samples containing strong acids or bases may disrupt the Karl Fischer reaction, risking inaccurate results. This page explores essential auxiliaries\u2014including buffers, salicylic acid, imidazole, benzoic acid, and molecular sieves\u2014designed to stabilize reactions for precise analysis.<\/p>\n<h2>Benefits of Auxiliaries for Karl Fischer Titration<\/h2>\n<ul>\n<li><strong>Accurate water determination support:<\/strong> Helps achieve accurate water determination results by addressing two critical requirements, complete sample dissolution and maintenance of the correct pH range.<\/li>\n<li><strong>Stable pH conditions for reliable results:<\/strong> Supports the Karl Fischer reaction by maintaining a pH between 5 and 7, which is important for correct analysis.<\/li>\n<li><strong>Improved suitability for challenging samples:<\/strong> Provides a practical way to work with samples containing strong acids or strong bases that may otherwise disturb the reaction conditions.<\/li>\n<li><strong>Consistent analysis under disturbed pH conditions:<\/strong> Helps keep the reaction in the optimum pH range when sample composition pushes the pH out of equilibrium.<\/li>\n<li><strong>Ready-to-use convenience:<\/strong> Offers ready-to-use solutions that can be added to maintain suitable reaction conditions for accurate Karl Fischer results.<\/li>\n<\/ul>\n<h2>Features and What\u2019s Included<\/h2>\n<ul>\n<li><strong>Product scope:<\/strong> Auxiliaries for Karl Fischer titration include buffer solutions, salicylic acid, imidazole, benzoic acid, and molecular sieves.<\/li>\n<li><strong>Buffer solutions:<\/strong> Two ready-to-use buffer solutions are offered for samples that may disturb the pH of the Karl Fischer reaction, such as strong acids or strong bases.<\/li>\n<li><strong>Buffer solution for strong acids:<\/strong> This product is an additive to the Karl Fischer solvent for titration of strong acids.<\/li>\n<li><strong>Buffer solution for strong bases:<\/strong> This product is an additive to the Karl Fischer solvent for titration of strong bases.<\/li>\n<li><strong>Salicylic acid:<\/strong> Salicylic acid is included among the auxiliaries offered for Karl Fischer titration.<\/li>\n<li><strong>Imidazole:<\/strong> Imidazole is included among the auxiliaries offered for Karl Fischer titration.<\/li>\n<li><strong>Benzoic acid:<\/strong> Emsure\u00ae Benzoic Acid is included among the auxiliaries offered for Karl Fischer titration.<\/li>\n<li><strong>Molecular sieves:<\/strong> Molecular sieve 0.3 mm rods are included among the auxiliaries offered for Karl Fischer titration.<\/li>\n<\/ul>\n<h2>Auxiliaries for Karl Fischer Titration Product List<\/h2>\n<div class=\"res-table-wrapper\">\n<table>\n<tbody>\n<tr style=\"background-color: #24326d;\">\n<th style=\"color: #ffffff;\"><b>Product<\/b><\/th>\n<th style=\"color: #ffffff;\"><b>Content<\/b><\/th>\n<th style=\"color: #ffffff;\"><b>Packaging<\/b><\/th>\n<\/tr>\n<tr>\n<td>Buffer solution for strong acids, additive to the Karl Fischer solvent for titration of strong acids<\/td>\n<td>500 mL<\/td>\n<td>Glass bottle<\/td>\n<\/tr>\n<tr>\n<td>Buffer solution for strong bases, additive to the Karl Fischer solvent for titration of strong bases<\/td>\n<td>500 mL<\/td>\n<td>Glass bottle<\/td>\n<\/tr>\n<tr>\n<td>Salicylic Acid<\/td>\n<td>100 g<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Salicylic Acid<\/td>\n<td>1000 g<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Imidazole<\/td>\n<td>&#8211;<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Emsure\u00ae &#8211; Benzoic Acid<\/td>\n<td>250 gr<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Emsure\u00ae &#8211; Benzoic Acid<\/td>\n<td>1000 gr<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm rods<\/td>\n<td>250 g<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm rods<\/td>\n<td>1000 g<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm beads with indicator<\/td>\n<td>250 g<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm beads with indicator<\/td>\n<td>1000 g<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm beads<\/td>\n<td>250 g<\/td>\n<td>PE bottle<\/td>\n<\/tr>\n<tr>\n<td>Molecular sieve 0.3 mm beads<\/td>\n<td>1000 g<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>Emsure\u00ae &#8211; Formamide<\/td>\n<td>1 L<\/td>\n<td>Glass bottle<\/td>\n<\/tr>\n<tr>\n<td>Emsure\u00ae &#8211; Chloroform<\/td>\n<td>1 L<\/td>\n<td>Glass bottle<\/td>\n<\/tr>\n<tr>\n<td>Emsure\u00ae &#8211; Xylene<\/td>\n<td>1 L<\/td>\n<td>Glass bottle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Chemical Express, with over 23 years of expertise, is the official distributor of Merck and related brands in Thailand. Our comprehensive range of Karl Fischer titration auxiliaries and analytical reagents can be conveniently ordered through Chemical Express, ensuring you have the quality and support needed for precise analyses.<\/p>\n<div style=\"text-align: center; margin-top: 64px; padding-bottom: 60px;\">\n<h3 style=\"margin-bottom: 8px;\">Have questions or ready to order?<\/h3>\n<p>Simply fill out our Inquiry Form or chat with us instantly on Line using the buttons below.<br \/>We&#8217;re here to help!<\/p>\n<div style=\"display: flex; justify-content: center; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 20px;\"><a style=\"display: inline-flex; align-items: center; justify-content: center; padding: 14px 28px; background: #0b5ed7; color: #ffffff; text-decoration: none; border-radius: 8px; font-weight: 600; font-size: 16px; line-height: 1; white-space: nowrap;\" 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