{"id":12733,"date":"2026-04-07T02:49:58","date_gmt":"2026-04-07T02:49:58","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12733"},"modified":"2026-04-07T02:49:58","modified_gmt":"2026-04-07T02:49:58","slug":"soda-blasting-media-when-why-to-choose-sodium-bicarbonate","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/fr\/resource\/blog\/soda-blasting-media-when-why-to-choose-sodium-bicarbonate\/","title":{"rendered":"Soda Blasting Media: When &amp; Why to Choose Sodium Bicarbonate"},"content":{"rendered":"<!-- ============================================================\n     JIANGSU HENGLIHONG TECHNOLOGY CO., LTD.\n     Article C-6: Soda Blasting Media\n     Target URL: https:\/\/hlh-js.com\/resource\/blog\/soda-blasting-media-when-why-to-choose-sodium-bicarbonate\/\n     Last updated: April 2026\n     ============================================================ -->\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@graph\": [\n        {\n            \"@type\": \"Article\",\n            \"headline\": \"Soda Blasting Media: When & Why to Choose Sodium Bicarbonate\",\n            \"description\": \"Complete guide to sodium bicarbonate soda blasting media \\u2014 covering the unique properties, applications in heritage restoration and food equipment, equipment requirements, limitations, and cost comparison vs. conventional abrasives. By Jiangsu Henglihong Technology Co., Ltd.\",\n            \"author\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"publisher\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"datePublished\": \"2026-04-01\",\n            \"dateModified\": \"2026-04-01\",\n            \"mainEntityOfPage\": {\n                \"@type\": \"WebPage\",\n                \"@id\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/soda-blasting-media-when-why-to-choose-sodium-bicarbonate\\\/\"\n            }\n        },\n        {\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 1,\n                    \"name\": \"Home\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 2,\n                    \"name\": \"Resources\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 3,\n                    \"name\": \"Blog\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 4,\n                    \"name\": \"Soda Blasting Media: When & Why to Choose Sodium Bicarbonate\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/soda-blasting-media-when-why-to-choose-sodium-bicarbonate\\\/\"\n                }\n            ]\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What is soda blasting media?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Soda blasting media is sodium bicarbonate (NaHCO\\u2083 \\u2014 baking soda) formulated in a specially engineered crystal size and purity for abrasive blasting use. Unlike kitchen baking soda, blasting-grade sodium bicarbonate is manufactured to consistent particle size distributions and low moisture content to perform reliably in pressurized blasting equipment. It rates 2.5 on the Mohs scale \\u2014 the softest commonly used blasting abrasive \\u2014 and shatters on impact, leaving no surface profile change on the substrate.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What are the main advantages of soda blasting over conventional abrasives?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Soda blasting's main advantages are: (1) zero substrate profiling \\u2014 it cleans surfaces without altering their dimensions or creating an anchor profile, making it suitable for precision parts, heritage surfaces, and food contact zones; (2) water-soluble waste \\u2014 spent soda dissolves in water and often qualifies for drain disposal (subject to local regulations) rather than requiring solid waste collection; (3) deodorizing action \\u2014 sodium bicarbonate neutralizes and absorbs odors during blasting, useful for fire restoration; (4) non-toxic and food-safe \\u2014 suitable for food processing equipment and food contact surfaces.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Can soda blasting be used on all metals?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Soda blasting is safe on most metals including carbon steel, stainless steel, aluminum, copper, and brass. However, the residue left by soda blasting on carbon steel surfaces is slightly alkaline, which can temporarily inhibit further rust formation but must be removed before applying most coating systems \\u2014 many coatings require a neutrally pH-balanced substrate, and soda residue can interfere with adhesion. Always rinse or neutralize soda-blasted carbon steel before coating application.\"\n                    }\n                }\n            ]\n        }\n    ]\n}<\/script>\n\n<style>\n.hlh-c6*,.hlh-c6*::before,.hlh-c6*::after{box-sizing:border-box;margin:0;padding:0}\n.hlh-c6{font-family:'Segoe UI',Arial,sans-serif;font-size:16px;line-height:1.8;color:#1a1a2e;max-width:960px;margin:0 auto;padding:0 16px 60px}\n.hlh-c6 .hlh-hero{background:linear-gradient(135deg,#1A5276 0%,#0d2d47 100%);border-radius:12px;padding:52px 44px;margin-bottom:48px;position:relative;overflow:hidden}\n.hlh-c6 .hlh-hero::before{content:'';position:absolute;top:-60px;right:-60px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,0.04)}\n.hlh-c6 .hlh-hero-label{display:inline-block;background:rgba(255,255,255,0.12);color:#AED6F1;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:4px 12px;border-radius:20px;margin-bottom:20px}\n.hlh-c6 .hlh-hero 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.hlh-faq-arrow{transform:rotate(180deg)}\n.hlh-c6 .hlh-faq-a{display:none;padding:15px 18px;font-size:14px;color:#2c3e50;line-height:1.7;border-top:1px solid #D5E8F3;background:#fff}\n.hlh-c6 .hlh-faq-item.open .hlh-faq-a{display:block}\n.hlh-c6 a.hlh-link{color:#1A5276;font-weight:600;text-decoration:underline;text-underline-offset:3px}\n.hlh-c6 a.hlh-link:hover{color:#2980B9}\n.hlh-c6 hr{border:none;border-top:1px solid #EAF0F6;margin:44px 0}\n.hlh-c6 ul,.hlh-c6 ol{padding-left:22px;margin-bottom:18px}\n.hlh-c6 li{margin-bottom:7px;color:#2c3e50;font-size:15px}\n.hlh-c6 strong{color:#0d2d47}\n@media(max-width:640px){.hlh-c6 .hlh-hero{padding:34px 22px}.hlh-c6 .hlh-cta{padding:30px 22px}}\n<\/style>\n\n<div class=\"hlh-c6\">\n\n  <div class=\"hlh-hero\">\n    <div class=\"hlh-hero-label\">Application Guide<\/div>\n    <h1>Soda Blasting Media: When &amp; Why to Choose Sodium Bicarbonate<\/h1>\n    <p>A complete guide to sodium bicarbonate soda blasting \u2014 covering the unique properties that make it indispensable for certain applications, its performance limits, equipment requirements, and how it compares to conventional abrasive media.<\/p>\n    <div class=\"hlh-hero-meta\">\n      <span>Published April 2026<\/span>\n      <span>By Jiangsu Henglihong Technology Co., Ltd.<\/span>\n      <span>~2,000 words \u00b7 9 min read<\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"hlh-toc\">\n    <div class=\"hlh-toc-title\">Table of Contents<\/div>\n    <ol>\n      <li><a href=\"#what-is-soda\">What Is Soda Blasting Media?<\/a><\/li>\n      <li><a href=\"#unique-properties\">Unique Properties of Sodium Bicarbonate<\/a><\/li>\n      <li><a href=\"#when-to-choose\">When to Choose Soda Blasting<\/a><\/li>\n      <li><a href=\"#applications\">Primary Application Areas<\/a><\/li>\n      <li><a href=\"#equipment\">Equipment Requirements<\/a><\/li>\n      <li><a href=\"#limitations\">Limitations of Soda Blasting<\/a><\/li>\n      <li><a href=\"#vs-others\">Soda vs Other Soft Blasting Media<\/a><\/li>\n      <li><a href=\"#pre-coating\">Pre-Coating Considerations After Soda Blasting<\/a><\/li>\n      <li><a href=\"#faq\">Questions fr\u00e9quemment pos\u00e9es<\/a><\/li>\n    <\/ol>\n  <\/div>\n\n  <h2 id=\"what-is-soda\">What Is Soda Blasting Media?<\/h2>\n  <p class=\"hlh-lead\">Soda blasting media is sodium bicarbonate (NaHCO\u2083) \u2014 the same compound as baking soda \u2014 manufactured in a specially engineered particle size and moisture-controlled formulation for use in pressurized abrasive blasting equipment. It rates just 2.5 on the Mohs hardness scale \u2014 the softest abrasive used for surface preparation \u2014 and uniquely, it shatters completely on impact, leaving no embedded particles and no surface profile.<\/p>\n  <p>Soda blasting occupies a specific and irreplaceable niche in the surface preparation toolkit: situations where the cleaning or coating removal goal must be achieved with absolutely zero alteration of the substrate surface. This is impossible with any other commonly available blasting media \u2014 even the softest plastic or organic alternatives leave some micro-profile on the surface. Soda&#8217;s shattering impact mechanism is the only approach that truly preserves the substrate exactly as it was.<\/p>\n  <p>Critically, soda blasting media is <em>not<\/em> ordinary kitchen baking soda. Kitchen sodium bicarbonate is ungraded, moisture-contaminated, and will clog blasting equipment and produce inconsistent results. Industrial soda blasting media is manufactured to defined particle size distributions (typically 70\u2013500 \u00b5m for blasting grades), with controlled moisture content and free-flowing characteristics specifically engineered for pressurized blasting use.<\/p>\n  <p>For broader context on where soda fits in the soft abrasive spectrum: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-organic-blasting-media-walnut-shell-corn-cob-plastic-grit\/\" target=\"_blank\" rel=\"noopener\">Plastic &amp; Organic Blasting Media: Walnut Shell, Corn Cob &amp; Plastic Grit<\/a>. For complete media comparison: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-complete-guide-to-types-properties-selection\/\" target=\"_blank\" rel=\"noopener\">Abrasive Blasting Media Complete Guide<\/a>.<\/p>\n\n  <h2 id=\"unique-properties\">Unique Properties of Sodium Bicarbonate as a Blast Media<\/h2>\n\n  <div class=\"hlh-table-wrap\">\n    <table>\n      <thead>\n        <tr><th>Property<\/th><th>Bicarbonate de sodium<\/th><th>Significance<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>Mohs hardness<\/td><td>2.5<\/td><td>Softest of all common blast media \u2014 will not profile any substrate<\/td><\/tr>\n        <tr><td>Impact mechanism<\/td><td>Shatters completely on impact<\/td><td>Zero embedded particles; zero profile change<\/td><\/tr>\n        <tr><td>Water solubility<\/td><td>Fully water-soluble (88 g\/L at 20\u00b0C)<\/td><td>Spent media dissolves in water rinse; potential drain disposal<\/td><\/tr>\n        <tr><td>pH of solution<\/td><td>~8.3 (mildly alkaline)<\/td><td>Mild degreasing action; slightly inhibits flash rust on steel<\/td><\/tr>\n        <tr><td>Odor neutralization<\/td><td>Active \u2014 absorbs and neutralizes acidic odors<\/td><td>Valuable for fire and mold remediation<\/td><\/tr>\n        <tr><td>Food safety<\/td><td>GRAS (Generally Recognized As Safe) \u2014 FDA listed<\/td><td>Safe for food contact surfaces and food equipment environments<\/td><\/tr>\n        <tr><td>Free silica content<\/td><td>Aucun<\/td><td>No silicosis risk<\/td><\/tr>\n        <tr><td>Iron content<\/td><td>Aucun<\/td><td>Safe on stainless steel and non-ferrous metals<\/td><\/tr>\n        <tr><td>Recyclabilit\u00e9<\/td><td>Single-use only<\/td><td>Dissolves\/fractures completely \u2014 no reclaim possible<\/td><\/tr>\n        <tr><td>Blasting temperature sensitivity<\/td><td>Stable to ~50\u00b0C<\/td><td>Avoid blasting very hot surfaces \u2014 decomposition above 50\u00b0C<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p>The combination of complete impact shattering (leaving no media residue on the surface) and water solubility makes soda blasting genuinely unique \u2014 no other blast media offers both properties simultaneously. This combination enables several application scenarios that are impossible with any alternative.<\/p>\n\n  <h2 id=\"when-to-choose\">When to Choose Soda Blasting<\/h2>\n  <p>The decision to use soda blasting rather than another soft media (plastic grit, walnut shell, corn cob) or a harder abrasive is driven by one or more of the following requirements being present:<\/p>\n  <ul>\n    <li><strong>Zero substrate profiling required:<\/strong> The surface must not be altered in any dimensional or textural way \u2014 precision chrome plating, polished stainless steel, decorative glass, soft stone, or any surface where even the finest angular abrasive would leave unacceptable marks.<\/li>\n    <li><strong>Food-grade cleaning environment:<\/strong> Equipment or surfaces in direct food contact zones where chemical cleaning residues are unacceptable and where the cleaning medium itself must be food-safe. Soda&#8217;s GRAS status is the decisive advantage here.<\/li>\n    <li><strong>Odor neutralization required alongside cleaning:<\/strong> Fire damage restoration, mold remediation, and smoke-damaged building restoration all involve substrate contamination that produces persistent odors. Soda&#8217;s active odor neutralization \u2014 chemically reacting with acidic odor compounds to neutralize them \u2014 is unique among blast media.<\/li>\n    <li><strong>Water-soluble waste disposal:<\/strong> Applications where dry waste collection is impractical but a water rinse is available, and where drain disposal of the dissolved soda residue is permitted by local regulations.<\/li>\n    <li><strong>Stainless steel or high-value alloy cleaning:<\/strong> Where even the iron-free but still-abrasive glass bead or plastic grit would be too aggressive for the application, soda provides contamination-free cleaning without any surface alteration.<\/li>\n  <\/ul>\n\n  <h2 id=\"applications\">Primary Application Areas<\/h2>\n\n  <h3>Heritage Building &amp; Historic Structure Restoration<\/h3>\n  <p>The restoration of historic buildings, monuments, stone facades, and architectural ornamental elements requires cleaning methods that remove accretions, biological growth, old paint, and pollution staining without damaging the original stone, brick, or plaster surface. Soda blasting is one of the most widely approved methods for this application \u2014 its extreme gentleness prevents stone surface erosion that would destroy carved details and historic surface textures, while its water solubility means no residue is left in the porous stone matrix.<\/p>\n  <p>Different crystal sizes are available for heritage work: coarser grades (XL crystals, 400\u2013500 \u00b5m) for removing thicker paint deposits from robust masonry; medium grades for standard cleaning; fine grades for the most delicate ornamental stone. Always consult a conservation specialist before specifying soda blasting on listed or protected heritage structures \u2014 the technique and parameters require expert calibration for each substrate type and condition.<\/p>\n\n  <h3>Fire &amp; Smoke Damage Restoration<\/h3>\n  <p>Fire damage remediation \u2014 cleaning soot, smoke residue, and char from structural elements and building contents \u2014 is one of soda blasting&#8217;s most established and effective applications. Soda accomplishes three things simultaneously: physical removal of soot and char by the abrasive impact of the crystal, chemical neutralization of acidic smoke residue (smoke deposits are acidic; sodium bicarbonate, being alkaline, neutralizes them on contact), and deodorizing of smoke odors through the same acid-base reaction mechanism.<\/p>\n  <p>No other blast media offers this combination. Walnut shell or plastic grit physically removes deposits but does not neutralize smoke chemistry or odors. Chemical treatments address chemistry but require dwell time, rinsing, and generate different waste streams. Soda blasting handles all three objectives in a single pass, making it the preferred technique for fire restoration contractors globally.<\/p>\n\n  <h3>Food Processing Equipment Cleaning<\/h3>\n  <p>Food manufacturing facilities \u2014 bakeries, meat processing, dairy plants, snack food production \u2014 use soda blasting for periodic deep cleaning of production equipment: conveyors, mixers, tanks, and processing chambers. The combination of food-safe status, zero chemical residue, and effective removal of baked-on food deposits, grease, and biofilm makes soda blasting highly valuable in regulated food production environments. After blasting, a water rinse dissolves all soda residue, leaving no contamination that could affect food safety compliance.<\/p>\n\n  <h3>Automotive Restoration: Engine Bay &amp; Underbody Cleaning<\/h3>\n  <p>Soda blasting has become popular in automotive restoration for cleaning engine bays, underbody components, and chassis members of accumulated grease, oil, and dirt without risk of damaging painted or plated surfaces adjacent to the blasted area. Its extremely gentle action makes it safer than any other blast media for use around rubber seals, gaskets, bearings, and plastic components that must not be contacted by abrasive media. For automotive paint removal from sheet metal, melamine plastic grit remains the more appropriate choice \u2014 soda cannot remove tightly adhered multi-layer paint systems from steel effectively.<\/p>\n\n  <h3>Industrial Equipment Degreasing and Mold Cleaning<\/h3>\n  <p>Injection molds and precision machined surfaces can be cleaned of release agent, polymer residue, and contamination by soda blasting without altering the surface finish or dimensions. The technique is particularly valued for molds with fine surface textures (leather grain, wood grain, matte finishes) where any abrasive media would damage the textured surface that is essential to the molded part&#8217;s appearance.<\/p>\n\n  <h2 id=\"equipment\">Equipment Requirements<\/h2>\n  <p>Soda blasting requires different equipment considerations than conventional abrasive blasting:<\/p>\n  <ul>\n    <li><strong>Dedicated or carefully cleaned equipment:<\/strong> Soda absorbs moisture rapidly and can cake in equipment that has previously held mineral or metallic abrasives. Dedicated soda blasting pots with smooth internal coatings minimize caking and bridging. At minimum, equipment must be thoroughly cleaned and dried before loading soda.<\/li>\n    <li><strong>Moisture control is critical:<\/strong> Soda must be kept dry before use. Humid conditions cause particle agglomeration and equipment clogging. Many soda blasting systems include air dryers and heated hoses to prevent in-line moisture absorption.<\/li>\n    <li><strong>Lower operating pressures:<\/strong> Soda is used at 20\u201360 PSI \u2014 significantly lower than mineral abrasives. Higher pressures fracture the crystals too aggressively, increasing dust without improving cleaning effectiveness.<\/li>\n    <li><strong>Waste collection:<\/strong> While soda is water-soluble, dry containment is still required during blasting to prevent airborne soda powder from contaminating adjacent areas. After collection, soda waste can typically be rinsed down drains (subject to local pH discharge regulations \u2014 confirm soda discharge is permitted).<\/li>\n  <\/ul>\n\n  <h2 id=\"limitations\">Limitations of Soda Blasting<\/h2>\n\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Cannot Create Surface Profile for Coating Adhesion<\/div>\n    <p>Soda blasting leaves the substrate exactly as it was dimensionally \u2014 no anchor profile, no micro-roughness change. This means it cannot prepare a steel surface for protective coating adhesion. If coating application is the goal after cleaning, a separate profiling operation using angular abrasive media (aluminum oxide, garnet, or steel grit) is required after the soda clean. This two-step process is more time-consuming and costly than profiling and cleaning simultaneously with a single angular blast \u2014 soda blasting&#8217;s primary use is therefore in applications where coating application is NOT the downstream objective.<\/p>\n  <\/div>\n\n  <div class=\"hlh-box hlh-box-orange\">\n    <div class=\"hlh-box-title\">Cannot Remove Tightly Adhered Coatings<\/div>\n    <p>Soda blasting at practical pressures cannot remove tightly adhered industrial paint systems, epoxy coatings, or thick rust. It is effective only at removing: loose or degraded paint, light contamination, soiling, biological growth, soot, grease, and soft deposits. For removing well-adhered multi-layer paint from steel or removing rust and mill scale, harder abrasive media is required. Attempting to use soda for applications beyond its capability results in unacceptably slow production and high media consumption without achieving the required surface condition.<\/p>\n  <\/div>\n\n  <h2 id=\"vs-others\">Soda vs Other Soft Blasting Media<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table>\n      <thead>\n        <tr><th>Property<\/th><th>Bicarbonate de sodium<\/th><th>Walnut Shell<\/th><th>Corn Cob<\/th><th>Plastic Grit (Urea)<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>Mohs hardness<\/td><td>2.5<\/td><td>3\u20134<\/td><td>2.5\u20133<\/td><td>3\u20133.5<\/td><\/tr>\n        <tr><td>Surface profile change<\/td><td class=\"td-good\">Zero<\/td><td>Minimal<\/td><td>Minimal<\/td><td>Minimal<\/td><\/tr>\n        <tr><td>Water solubility<\/td><td class=\"td-good\">Complete<\/td><td>Aucun<\/td><td>None (absorbs water)<\/td><td>Aucun<\/td><\/tr>\n        <tr><td>Odor neutralization<\/td><td class=\"td-good\">Active (alkaline)<\/td><td>Aucun<\/td><td>Aucun<\/td><td>Aucun<\/td><\/tr>\n        <tr><td>Food safe<\/td><td class=\"td-good\">Yes (GRAS)<\/td><td>Yes (natural)<\/td><td>Yes (natural)<\/td><td>No<\/td><\/tr>\n        <tr><td>Biodegradable<\/td><td class=\"td-good\">Yes<\/td><td class=\"td-good\">Yes<\/td><td class=\"td-good\">Yes<\/td><td>No<\/td><\/tr>\n        <tr><td>Reusability<\/td><td>Single-use<\/td><td>Single-use<\/td><td>Single-use<\/td><td>2\u20133\u00d7<\/td><\/tr>\n        <tr><td>Coating removal capability<\/td><td>Very light only<\/td><td>Light-medium<\/td><td>Very light only<\/td><td>Light-medium<\/td><\/tr>\n        <tr><td>Cost per kg<\/td><td>Haut<\/td><td>Faible<\/td><td>Tr\u00e8s faible<\/td><td>Haut<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2 id=\"pre-coating\">Pre-Coating Considerations After Soda Blasting<\/h2>\n  <p>If coating application is required after soda blasting (unusual \u2014 see limitations above), specific substrate preparation steps are necessary before any coating can be applied:<\/p>\n  <ul>\n    <li><strong>Thorough water rinse:<\/strong> Remove all soda residue from the surface and from any crevices or recesses where it may have accumulated. Residual soda under a coating will absorb moisture osmotically and cause blistering.<\/li>\n    <li><strong>pH verification:<\/strong> Test the rinsed surface with pH paper or a pH meter. The surface must be pH-neutral (pH 6\u20138) before coating application. Soda leaves a mildly alkaline residue that must be fully rinsed away.<\/li>\n    <li><strong>Dry completely:<\/strong> The surface must be completely dry before any coating is applied. Soda&#8217;s hygroscopic nature means the blasted surface can re-absorb atmospheric moisture rapidly in humid conditions.<\/li>\n    <li><strong>Profile the surface:<\/strong> If the coating specification requires a minimum anchor profile, this must be created with a separate angular abrasive blast after the soda clean and rinse. Soda blasting alone does not produce a coating-ready profile on steel.<\/li>\n  <\/ul>\n\n  <div class=\"hlh-cta\">\n    <h3>Questions About Soda Blasting or Other Soft Media?<\/h3>\n    <p>While Jiangsu Henglihong Technology&#8217;s core product range is aluminum oxide, silicon carbide, glass beads, and steel shot\/grit, our technical team can advise on the full spectrum of blasting media options \u2014 including soda blasting for specialized applications \u2014 and help you select the most appropriate media for your specific surface preparation challenge.<\/p>\n    <a href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request Technical Advice<\/a>\n  <\/div>\n\n  <hr>\n\n  <h2 id=\"faq\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n  <div class=\"hlh-faq\">\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC6Toggle(this)\">What is soda blasting media?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Soda blasting media is sodium bicarbonate (NaHCO\u2083) manufactured in specific particle sizes and low moisture formulations for pressurized blasting equipment use. At Mohs 2.5, it is the softest common blast abrasive. It shatters completely on impact, leaving no profile change and no embedded particles \u2014 unlike kitchen baking soda, industrial blasting-grade soda has controlled particle size distributions and moisture content for reliable equipment performance.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC6Toggle(this)\">What are the main advantages of soda blasting?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Soda blasting&#8217;s key advantages are: (1) zero substrate profiling \u2014 cleans without dimensional alteration; (2) water-soluble waste that often qualifies for drain disposal; (3) active odor neutralization for fire and smoke restoration; (4) food-safe GRAS status for food equipment; (5) no silica, no iron, no toxic residues. These properties make it the only suitable option for heritage stone, fire restoration, precision parts, and food processing equipment cleaning.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC6Toggle(this)\">Can soda blasting be used on all metals?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Soda is safe on most metals including carbon steel, stainless steel, aluminum, copper, and brass. The mildly alkaline residue left on carbon steel can temporarily inhibit flash rust but must be fully rinsed off before coating application \u2014 most coatings require a pH-neutral substrate, and soda residue can interfere with adhesion. Always rinse and verify pH-neutral surface before applying any coating after soda blasting.<\/div>\n    <\/div>\n  <\/div>\n\n  <hr>\n\n  <div class=\"hlh-related\">\n    <div class=\"hlh-related-title\">Related Guides in This Series<\/div>\n    <div class=\"hlh-related-grid\">\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-complete-guide-to-types-properties-selection\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Complete Guide<\/div>\n        <div class=\"rc-title\">Abrasive Blasting Media: Complete Guide to Types, Properties &amp; Selection<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-organic-blasting-media-walnut-shell-corn-cob-plastic-grit\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Media Types<\/div>\n        <div class=\"rc-title\">Plastic &amp; Organic Blasting Media: Walnut Shell, Corn Cob &amp; Plastic Grit<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/eco-friendly-biodegradable-blasting-media-green-alternatives-guide\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Safety &amp; Compliance<\/div>\n        <div class=\"rc-title\">Eco-Friendly &amp; Biodegradable Blasting Media: Green Alternatives Guide<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-for-concrete-stone-surface-preparation\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Application Guide<\/div>\n        <div class=\"rc-title\">Abrasive Blasting Media for Concrete &amp; Stone Surface Preparation<\/div>\n      <\/a>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n<script>\n(function(){\n  function hlhC6Toggle(btn){\n    var item=btn.closest('.hlh-faq-item');\n    var isOpen=item.classList.contains('open');\n    document.querySelectorAll('.hlh-c6 .hlh-faq-item').forEach(function(el){el.classList.remove('open');});\n    if(!isOpen){item.classList.add('open');}\n  }\n  window.hlhC6Toggle=hlhC6Toggle;\n})();\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Application Guide Soda Blasting Media: When &amp; Why to Choose  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12777,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-12733","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/comments?post=12733"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12733\/revisions"}],"predecessor-version":[{"id":12735,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12733\/revisions\/12735"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media\/12777"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media?parent=12733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/categories?post=12733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/tags?post=12733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}