{"id":2019,"date":"2025-10-21T05:05:43","date_gmt":"2025-10-21T05:05:43","guid":{"rendered":"https:\/\/thaiengineeringgases.com\/products-services\/chemicals-business\/sodium-hydroxide\/"},"modified":"2026-04-27T09:35:54","modified_gmt":"2026-04-27T09:35:54","slug":"sodium-hydroxide","status":"publish","type":"page","link":"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/","title":{"rendered":"Sodium hydroxide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2019\" class=\"elementor elementor-2019 elementor-431\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-28ce6840 e-flex e-con-boxed e-con e-parent\" data-id=\"28ce6840\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-617d226a e-con-full e-flex e-con e-child\" data-id=\"617d226a\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-619f2b0e elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"619f2b0e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_mobile&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Sodium hydroxide<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d2ffd3 elementor-widget elementor-widget-text-editor\" data-id=\"4d2ffd3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sodium hydroxide , or caustic soda (NaOH), is a basic chemical. It is a properties of strong alkalinity, high corrosiveness, excellent moisture absorption, and a violent exothermic reaction when dissolved in water. Caustic soda has a wide range of applications in manufacturing and industrial. Including pH adjustment in wastewater treatment systems, pulp and paper production (Kraft process), food and cosmetic manufacturing, aluminum extraction (Bayer process), and as an intermediate in the production of other chemicals.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2ffdf07 e-flex e-con-boxed e-con e-parent\" data-id=\"2ffdf07\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4b81108 e-grid e-con-full e-con e-child\" data-id=\"4b81108\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03e374c elementor-widget elementor-widget-spacer\" data-id=\"03e374c\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2b8c34a e-flex e-con-boxed e-con e-parent\" data-id=\"2b8c34a\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d981d6b e-grid e-con-full e-con e-child\" data-id=\"d981d6b\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9884119 elementor-widget elementor-widget-text-editor\" data-id=\"9884119\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h4>Sodium hydroxide is generally use in 3 main forms:<\/h4><ul><li><p>Caustic soda flakes 98% : This is the most popular form, easy to transport, and has a high concentration of up to 98%. It&#8217;s suitable for dyeing, bleaching, and cleaning machinery.<\/p><\/li><li><p>Caustic soda pearls : These are small, spherical granules. Their advantage is less dust than flakes and they dissolve very quickly in water. They are often use in industries requiring high precision, such as soap and cosmetics production.<\/p><\/li><li><p>Caustic soda liquid : Available in various concentrations such as 20%, 25%, 32%, and 50%. For large industrial plants with chemical storage and dispensing systems, using caustic soda liquid reduces the need for chemical dissolution and minimizes the risk of direct chemical exposure for employees.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eec59e2 elementor-widget elementor-widget-image\" data-id=\"eec59e2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"400\" src=\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-1024x512.jpg\" class=\"attachment-large size-large wp-image-3242\" alt=\"caustic soda\" srcset=\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-1024x512.jpg 1024w, https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-300x150.jpg 300w, https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-768x384.jpg 768w, https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1.jpg 1500w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Sodium hydroxide is use in a pulp and paper industry<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7aaec16 e-flex e-con-boxed e-con e-parent\" data-id=\"7aaec16\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d7ce5f elementor-widget elementor-widget-text-editor\" data-id=\"0d7ce5f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7d0704 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7d0704\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-86ff6ad\" data-id=\"86ff6ad\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-37b501b elementor-widget elementor-widget-heading\" data-id=\"37b501b\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><section class=\"elementor-section elementor-top-section elementor-element elementor-element-b973a24 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b973a24\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d2bc7a4\" data-id=\"d2bc7a4\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-9dd412a elementor-widget elementor-widget-heading\" data-id=\"9dd412a\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><div class=\"elementor-element elementor-element-ba7a8dd e-flex e-con-boxed e-con e-parent e-lazyloaded\" data-id=\"ba7a8dd\" data-element_type=\"container\"><div class=\"e-con-inner\"><div class=\"elementor-element elementor-element-ad4dff3 elementor-widget elementor-widget-heading\" data-id=\"ad4dff3\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><h4>Properties of Sodium hydroxide:<\/h4><ul><li>Molecular Formula: NaOH<\/li><li>Purity (flakes\/pearls): 98% &#8211; 99%<\/li><li>Concentration (water): 20%, 25%, 32%, 50%<\/li><li>Melting\/Freezing Point: 9-12 \u00b0C<\/li><li>Boiling Point: 143 \u00b0C (for a 50% concentration solution)<\/li><li>pH: 13 \u2013 14<\/li><li>Relative Density (water = 1): 1.5 at 15 \u00b0C<\/li><li>Vacuum Pressure: 13 mmHg (0.2 kPa) at 20 \u00b0C<\/li><\/ul><p>Furthermore, caustic soda in its solid state (flakes or pearls) has a strong hygroscopic property. If left in normal atmospheric conditions, it will absorb water vapor and carbon dioxide (CO2). Then becoming a solution through a phenomenon known as deliquescence. Therefore, it must be stored in a tightly sealed and completely dry container.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><\/div><\/div><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1cadd96 e-flex e-con-boxed e-con e-parent\" data-id=\"1cadd96\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6cd4d08 e-grid e-con-full e-con e-child\" data-id=\"6cd4d08\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t<div class=\"elementor-element elementor-element-8c7690c e-con-full e-flex e-con e-child\" data-id=\"8c7690c\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-73a9157 elementor-widget elementor-widget-text-editor\" data-id=\"73a9157\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7d0704 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7d0704\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-86ff6ad\" data-id=\"86ff6ad\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-37b501b elementor-widget elementor-widget-heading\" data-id=\"37b501b\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><section class=\"elementor-section elementor-top-section elementor-element elementor-element-b973a24 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b973a24\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d2bc7a4\" data-id=\"d2bc7a4\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-9dd412a elementor-widget elementor-widget-heading\" data-id=\"9dd412a\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><div class=\"elementor-element elementor-element-ba7a8dd e-flex e-con-boxed e-con e-parent e-lazyloaded\" data-id=\"ba7a8dd\" data-element_type=\"container\"><div class=\"e-con-inner\"><div class=\"elementor-element elementor-element-ad4dff3 elementor-widget elementor-widget-heading\" data-id=\"ad4dff3\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><h4>Benefits of Sodium hydroxide:<\/h4><ul><li><p>The pulp and paper industry use caustic soda in the Kraft Process to separate lignin from wood cellulose fibers. Resulting in white and strong paper pulp. It&#8217;s also used in bleaching pulp and in wastewater treatment at paper mills.<\/p><\/li><li><p>The aluminum production industry: In metallurgy, caustic soda is crucial in the Bayer Process, a step in extracting alumina from aluminum ore.<\/p><\/li><li><p>The chemical manufacturing industry use sodium hydroxide as an intermediate in the production of many other chemicals. Such as PVC plastics, sodium hypochlorite, and epoxy resin.<\/p><\/li><li><p>The food and beverage industry use food-grade caustic soda in various processes. Such as bottle washing for sterilization and cleaning of reusable glass bottles, food processing, and softening certain foods.<\/p><\/li><li><p>The petroleum and refining industry use caustic soda in oil refineries. In a process called &#8220;caustic washing&#8221; to remove acidic impurities such as hydrogen sulfide and various organic acids from crude oil and natural gas, resulting in cleaner oil and reduced corrosion in pipelines.<\/p><\/li><li><p>In the renewable energy industry (biofuels), in the production of biodiesel use caustic soda as a catalyst in the transesterification reaction that converts vegetable oils or animal fats into fuel.<\/p><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><\/div><\/div><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-19342ff e-con-full e-flex e-con e-child\" data-id=\"19342ff\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-029279b elementor-widget elementor-widget-image\" data-id=\"029279b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"602\" height=\"739\" src=\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/Sodium-Hydroxide-or-Caustic-Soda-Flakes.jpg\" class=\"attachment-medium_large size-medium_large wp-image-3564\" alt=\"\" srcset=\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/Sodium-Hydroxide-or-Caustic-Soda-Flakes.jpg 602w, https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/Sodium-Hydroxide-or-Caustic-Soda-Flakes-244x300.jpg 244w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-81a18dc e-flex e-con-boxed e-con e-parent\" data-id=\"81a18dc\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dbb3b51 elementor-widget elementor-widget-text-editor\" data-id=\"dbb3b51\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7d0704 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7d0704\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-86ff6ad\" data-id=\"86ff6ad\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-37b501b elementor-widget elementor-widget-heading\" data-id=\"37b501b\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><section class=\"elementor-section elementor-top-section elementor-element elementor-element-b973a24 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b973a24\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d2bc7a4\" data-id=\"d2bc7a4\" data-element_type=\"column\"><div class=\"elementor-widget-wrap elementor-element-populated\"><div class=\"elementor-element elementor-element-9dd412a elementor-widget elementor-widget-heading\" data-id=\"9dd412a\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-widget-container\"><div class=\"elementor-element elementor-element-ba7a8dd e-flex e-con-boxed e-con e-parent e-lazyloaded\" data-id=\"ba7a8dd\" data-element_type=\"container\"><div class=\"e-con-inner\"><h3>Looking to purchase Sodium hydroxide for industrial use?<\/h3><\/div><\/div><div class=\"elementor-element elementor-element-e23c4bd e-flex e-con-boxed e-con e-parent e-lazyloaded\" data-id=\"e23c4bd\" data-element_type=\"container\"><div class=\"e-con-inner\"><div class=\"elementor-element elementor-element-6938b1a elementor-widget elementor-widget-heading\" data-id=\"6938b1a\" data-element_type=\"widget\" data-widget_type=\"heading.default\"><div class=\"elementor-element elementor-element-477056d e-flex e-con-boxed e-con e-parent e-lazyloaded\" data-id=\"477056d\" data-element_type=\"container\"><div class=\"e-con-inner\"><div class=\"elementor-element elementor-element-87d2d93 elementor-widget elementor-widget-text-editor\" data-id=\"87d2d93\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"><p>Thai Engineering Gas Co., Ltd. (TEG) is a distributor of sodium hydroxide (caustic soda) in 98% granular form size 25 kg bags, and in liquid form with various concentrations from 20% to 50%. We provide bulk delivery using chemical tank trucks (10-16 tons) for pumping into customer storage tanks, ensuring safety, convenience, and precise quantities to meet customer needs.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><\/div><\/div><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2855467 e-flex e-con-boxed e-con e-parent\" data-id=\"2855467\" data-element_type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-10cce98 elementor-widget elementor-widget-text-editor\" data-id=\"10cce98\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0\u00a0More information\u00a0\u00a0<a href=\"https:\/\/thaiengineeringgases.com\/en\/contact\/\">please contact<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfd3c3c elementor-widget elementor-widget-spacer\" data-id=\"cfd3c3c\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2add14e btn-line elementor-align-left elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"2add14e\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/line.me\/R\/ti\/p\/@teg.official\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" height=\"512\" viewBox=\"0 0 152 152\" width=\"512\"><path id=\"Icon\" d=\"m76 13.7c-35.8 0-65 23.9-65 53.1 0 26.2 23.1 48.3 54.3 52.3 2.1.5 5 1.5 5.7 3.2.5 1.9.7 3.9.2 5.8l-.8 5.5c-.3 1.6-1.3 6.5 5.7 3.6s37.5-22.3 51.2-38c9.3-10.2 13.8-20.8 13.8-32.5-.1-29.1-29.3-53-65.1-53zm-25.5 70.6h-13c-1.8 0-3.2-1.5-3.2-3.4v-26c0-2 1.5-3.4 3.4-3.4 2 0 3.4 1.5 3.4 3.4v22.4h9.4c2 .2 3.2 1.8 3.2 3.7-.1 1.6-1.4 3.1-3.2 3.3zm13.5-3.4c.2 1.9-1.3 3.6-3.2 3.6-1.9.2-3.6-1.3-3.6-3.2 0-.2 0-.3 0-.5v-25.9c-.2-2 1.3-3.6 3.2-3.6s3.6 1.3 3.6 3.2v.5zm31 0c0 1.8-1.5 3.4-3.4 3.4-1.1 0-2.1-.5-2.8-1.3l-13.3-18.2v16.1c.2 1.9-1.3 3.6-3.2 3.6-1.9.2-3.6-1.3-3.6-3.2 0-.2 0-.3 0-.5v-26c0-1.5 1-2.8 2.3-3.1.3-.2.7-.2 1-.2 1 0 2.1.5 2.8 1.3l13.3 18v-16.1c0-2 1.5-3.4 3.4-3.4s3.4 1.5 3.4 3.4zm20.8-16.5c1.9.2 3.2 1.8 3.2 3.7-.2 1.8-1.5 3.1-3.2 3.2h-9.4v6.2h9.4c1.9.2 3.2 1.8 3.2 3.7-.2 1.8-1.5 3.1-3.2 3.2h-13c-1.8 0-3.2-1.6-3.2-3.4v-26.1c0-2 1.5-3.4 3.4-3.4h13c1.9.2 3.2 1.8 3.2 3.7-.2 1.8-1.5 3.1-3.2 3.2h-9.6v6.2z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u0e15\u0e34\u0e14\u0e15\u0e48\u0e2d LINE OFFICIAL<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1d6fe2 elementor-widget elementor-widget-spacer\" data-id=\"f1d6fe2\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Sodium hydroxide Sodium hydroxide , or caustic soda (NaOH), is a basic chemical. It is a properties of strong alkalinity, high corrosiveness, excellent moisture absorption, and a violent exothermic reaction when dissolved in water. Caustic soda has a wide range of applications in manufacturing and industrial. Including pH adjustment in wastewater treatment systems, pulp and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2006,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2019","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sodium Hydroxide or Caustic Soda, flake and liquid, for industry<\/title>\n<meta name=\"description\" content=\"We are distributor of Sodium hydroxide or Caustic Soda (NaOH) both flake and liquid 20% - 50% for industrial uses.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sodium Hydroxide or Caustic Soda, flake and liquid, for industry\" \/>\n<meta property=\"og:description\" content=\"We are distributor of Sodium hydroxide or Caustic Soda (NaOH) both flake and liquid 20% - 50% for industrial uses.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/\" \/>\n<meta property=\"og:site_name\" content=\"Thai Engineering Gas Co., Ltd.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-27T09:35:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"750\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/\",\"url\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/\",\"name\":\"Sodium Hydroxide or Caustic Soda, flake and liquid, for industry\",\"isPartOf\":{\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-1024x512.jpg\",\"datePublished\":\"2025-10-21T05:05:43+00:00\",\"dateModified\":\"2026-04-27T09:35:54+00:00\",\"description\":\"We are distributor of Sodium hydroxide or Caustic Soda (NaOH) both flake and liquid 20% - 50% for industrial uses.\",\"breadcrumb\":{\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/#primaryimage\",\"url\":\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-1024x512.jpg\",\"contentUrl\":\"https:\/\/thaiengineeringgases.com\/wp-content\/uploads\/2026\/04\/233419-1-1024x512.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/sodium-hydroxide\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/thaiengineeringgases.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products and Services\",\"item\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Chemical Business Group\",\"item\":\"https:\/\/thaiengineeringgases.com\/en\/products-services\/chemicals-business\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Sodium hydroxide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/thaiengineeringgases.com\/en\/#website\",\"url\":\"https:\/\/thaiengineeringgases.com\/en\/\",\"name\":\"Thai Engineering Gas Co., Ltd.\",\"description\":\"Gases &amp; 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