{"id":1327,"date":"2026-09-15T14:07:46","date_gmt":"2026-09-15T06:07:46","guid":{"rendered":"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid-powder-50\/"},"modified":"2026-09-16T19:22:56","modified_gmt":"2026-09-16T11:22:56","slug":"insoluble-humic-acid-powder-50","status":"publish","type":"product_item","link":"https:\/\/www.jingfenggroup.com\/zh\/insoluble-humic-acid\/insoluble-humic-acid-powder-50\/","title":{"rendered":"Insoluble Humic Acid Powder 50% \u2013 Humate-Salt Feedstock &#038; General Agriculture"},"content":{"rendered":"<style>\n\/* \u57fa\u7840\u91cd\u7f6e + \u5168\u5c40\u5e73\u6ed1\u6eda\u52a8\uff08\u951a\u70b9\u515c\u5e95\uff09 *\/\nhtml{scroll-behavior:smooth;scroll-padding-top:78px;}\n.jf-wrap{max-width:1140px;margin:0 auto;padding:0 16px;box-sizing:border-box;}\n.jf-wrap *{box-sizing:border-box;}\n\/* \u9690\u85cf\u4e3b\u9898\u81ea\u52a8\u63d2\u5165\u7684 Table of contents\uff08\u4e0e\u60ac\u6d6e\u951a\u70b9\u5bfc\u822a\u91cd\u590d\uff09 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rgba(0,77,77,.10);transform:translateY(-2px)}.jf-rel-img{display:block;aspect-ratio:1\/1;background:#f5fafa;overflow:hidden}.jf-rel-img img{width:100%;height:100%;object-fit:cover;display:block}.jf-rel-thumb .t{display:block;padding:9px 11px;font-size:13px;font-weight:600;color:#004d4d;line-height:1.35}<\/style>\n<div class=\"jf-wrap\">\n<nav class=\"jf-nav\">\n<a href=\"#overview\">Overview<\/a><br \/>\n<a href=\"#benefits\">Benefits<\/a><br \/>\n<a href=\"#specs\">Specs<\/a><br \/>\n<a href=\"#docs\">Documents<\/a><br \/>\n<a href=\"#solubility\">Form<\/a><br \/>\n<a href=\"#applications\">Applications<\/a><br \/>\n<a href=\"#packaging\">Packaging<\/a><br \/>\n<a href=\"#cases\">Cases<\/a><br \/>\n<a href=\"#faq\">FAQ<\/a><br \/>\n<\/nav>\n<div class=\"jf-hero\">\n<div class=\"jf-hero-eyebrow\">INSOLUBLE HUMIC ACID &middot; LEONARDITE POWDER 50%<\/div>\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50[data-kb-block=\"kb-adv-headingkb-h1-powder50\"]{font-size:33px;font-style:normal;color:#ffffff;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50[data-kb-block=\"kb-adv-headingkb-h1-powder50\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50[data-kb-block=\"kb-adv-headingkb-h1-powder50\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50, .wp-block-kadence-advancedheading.kt-adv-headingkb-h1-powder50[data-kb-block=\"kb-adv-headingkb-h1-powder50\"]{font-size:26px;}}<\/style>\n<h1 class=\"kt-adv-heading kb-h1-powder50 jf-hero-title\">Insoluble Humic Acid Powder 50%<\/h1>\n<p class=\"jf-hero-tag\">The Mid Cut for Agriculture and for Making Humate Salts<\/p>\n<div class=\"jf-badges\">\n<span class=\"jf-badge\">Humic acid 50% min<\/span><br \/>\n<span class=\"jf-badge\">Organic matter 65% min<\/span><br \/>\n<span class=\"jf-badge\">Fineness 80\u2013100 mesh<\/span><br \/>\n<span class=\"jf-badge\">Code JFHA-HA-P50<\/span>\n<\/div>\n<p class=\"jf-hero-lead\"><strong>80\u2013100 mesh black powder &middot; 50% humic acid &middot; 65% organic matter &middot; pH 5.0\u20137.0 &middot; humate-salt feedstock<\/strong><\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"overview\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-overview[data-kb-block=\"kb-adv-headingkb-h2-overview\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Product Overview<\/h2>\n<p><strong>Insoluble Humic Acid Powder 50%<\/strong> is the mid cut of our milled <a href=\"https:\/\/en.wikipedia.org\/wiki\/Leonardite\" target=\"_blank\" rel=\"noopener\">leonardite<\/a> powder \u2014 the same seam and 80\u2013100 mesh grind as the rest of the range, taken at the 50% humic-acid cut. It is dried, classified and bagged with no extraction and no chemical solubilisation, so the humic fraction stays in its native, <strong>water-insoluble form<\/strong>.<\/p>\n<p>The 50% cut sits in the useful middle. For <strong>agriculture<\/strong>, it is enough humic acid to support a registered humic claim while staying economical for bulk blending and granulation. For <strong>industry<\/strong>, it is the natural feedstock for making humate salts: react it with caustic (NaOH, KOH) to produce sodium or potassium humate, or sulfomethylate it to make sulfonated humate for drilling-fluid and water-treatment use. You buy the raw humic acid here and do the reaction at your own plant, or have us toll it.<\/p>\n<p><strong>Insoluble Humic Acid Powder 50%<\/strong> is the grade most often specified both by fertilizer blenders and by humate-salt manufacturers who want to control their own chemistry.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"benefits\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-benefits[data-kb-block=\"kb-adv-headingkb-h2-benefits\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Key Benefits<\/h2>\n<div class=\"jf-grid\">\n<div class=\"jf-card\">\n<h4>Enough humic acid for a registered claim<\/h4>\n<p>At 50% minimum, this cut supports a printed humic-acid claim on a fertilizer or soil-conditioner label \u2014 which the 40% cut cannot do \u2014 while staying well below the premium of the 60% and 70% grades.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>The natural feedstock for humate salts<\/h4>\n<p>Reacted with NaOH or KOH it becomes sodium or potassium humate; sulfomethylated it becomes sulfonated humate for drilling and water treatment. Buying the raw 50% cut lets you run the reaction in-house or toll it, rather than paying for a finished salt.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>65% organic matter alongside the humic fraction<\/h4>\n<p>Beyond the 50% humic acid, the material carries 65% minimum organic matter \u2014 a real soil-carbon contribution, not a trace additive.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>80\u2013100 mesh \u2014 blends and granulates cleanly<\/h4>\n<p>The grind disperses through dry blends without balling and wets evenly in a granulator, so it fits both fertilizer lines and humate-salt reactors.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>One seam, four cuts, one supplier<\/h4>\n<p>40%, 50%, 60% and 70% come off the same mill. Hold one relationship while covering soil amendment, general agriculture and humate-salt production.<\/p>\n<\/div>\n<div class=\"jf-card\">\n<h4>Heavy metals below detection, every batch<\/h4>\n<p>Pb, As, Hg, Cd and Cr tested against GB 18877 and reported as not detected, with a batch-specific COA.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"specs\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-specs[data-kb-block=\"kb-adv-headingkb-h2-specs\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Technical Specification<\/h2>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Specification<\/th>\n<th>Test standard<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Humic acid (dry basis)<\/td>\n<td>50.0% min<\/td>\n<td>GB\/T 11957-2001<\/td>\n<\/tr>\n<tr>\n<td>Organic matter (dry basis)<\/td>\n<td>65.0% min<\/td>\n<td>NY 525-2012<\/td>\n<\/tr>\n<tr>\n<td>Moisture<\/td>\n<td>25.0% max<\/td>\n<td>GB\/T 11957-2001<\/td>\n<\/tr>\n<tr>\n<td>pH (1:100)<\/td>\n<td>5.0 \u2013 7.0<\/td>\n<td>GB\/T 33804-2017<\/td>\n<\/tr>\n<tr>\n<td>Fineness<\/td>\n<td>80 \u2013 100 mesh<\/td>\n<td>Sieve method<\/td>\n<\/tr>\n<tr>\n<td>Water solubility<\/td>\n<td>Nil (insoluble by design)<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Appearance<\/td>\n<td>Black powder<\/td>\n<td>Visual<\/td>\n<\/tr>\n<tr>\n<td>Product code<\/td>\n<td>JFHA-HA-P50<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"jf-sub\">Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.<\/p>\n<div class=\"jf-doc-cta\" id=\"docs\">\n<p class=\"jf-doc-cta-txt\">Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?<\/p>\n<p><a class=\"jf-btn\" href=\"\/contact\/\">Request COA \/ MSDS \/ TDS<\/a>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"solubility\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-sol[data-kb-block=\"kb-adv-headingkb-h2-sol\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Form &amp; Solubility<\/h2>\n<p><strong>Form:<\/strong> dry <strong>black powder<\/strong>, 80\u2013100 mesh, slightly damp to the touch (up to 25% natural moisture). Free-flowing but not fluid.<\/p>\n<p><strong>In water:<\/strong> insoluble. It will not dissolve and must not go into fertigation, drip lines or liquid tanks \u2014 it blocks emitters and filters. For a soluble product use potassium humate or potassium fulvate.<\/p>\n<p><strong>As a humate-salt feedstock:<\/strong> the 80\u2013100 mesh grind reacts evenly with caustic and wets uniformly in a sulfomethylation reactor, which is why processors prefer a consistent fine powder over coarser material.<\/p>\n<p><strong>In a dry blend or granulator:<\/strong> it disperses well and accepts binder evenly. Expect dust control on the line.<\/p>\n<div class=\"jf-note\"><strong>Honest note:<\/strong> the 50% cut is the middle of the range \u2014 enough for a humic claim and for making humate salts, but not the low-ash grade oilfield buyers want. If your use is drilling fluid or a high-purity humate salt, the 70% low-ash cut is the correct specification; if you only need organic matter, the 40% cut is cheaper. We will point you to the right one.<\/div>\n<h3>Which insoluble grade fits your process?<\/h3>\n<table class=\"jf-tb jf-tb-cmp\">\n<thead>\n<tr>\n<th>Grade<\/th>\n<th>Form<\/th>\n<th>Humic acid<\/th>\n<th>Organic matter<\/th>\n<th>Size<\/th>\n<th>Best for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-60\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Powder<\/strong><\/a><\/td>\n<td>80\u2013100 mesh powder<\/td>\n<td>40\u201370%<\/td>\n<td>70\u201382%<\/td>\n<td>80\u2013100 mesh<\/td>\n<td>Granulation feed, soil conditioner base, blending<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-crystal\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Crystal<\/strong><\/a><\/td>\n<td>2\u20134 mm crystal<\/td>\n<td>60% min<\/td>\n<td>\u2014<\/td>\n<td>2\u20134 \/ 1\u20136 mm<\/td>\n<td>Direct soil application, premium organic blends<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-granule\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Granule<\/strong><\/a><\/td>\n<td>2\u20134 mm round granule<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Bulk blending, broadcasting, organic fertilizer<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-prills\/\" target=\"_blank\" rel=\"noopener\"><strong>Humic Acid Prills<\/strong><\/a><\/td>\n<td>2\u20134 mm high-hardness<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Urea\/blending, mechanical spreading, export<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/microbial-humic-granular-fertilizer\/\" target=\"_blank\" rel=\"noopener\"><strong>Microbial Humic Granule<\/strong><\/a><\/td>\n<td>2\u20134 mm inoculated<\/td>\n<td>40% min<\/td>\n<td>60% min<\/td>\n<td>2\u20134 mm<\/td>\n<td>Bio-organic fertilizer, root-zone inoculation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"jf-sub\">All five grades come from the same leonardite seam and carry the same heavy-metal declaration (Pb, As, Hg, Cd, Cr all below detection, GB 18877). They differ in <em>particle form<\/em> and <em>where they fit in your process<\/em> &mdash; not in origin.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"applications\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-apps[data-kb-block=\"kb-adv-headingkb-h2-apps\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Applications &amp; Dosage<\/h2>\n<p class=\"jf-lead\">Split between agriculture and humate-salt production \u2014 both dry or react-in-plant:<\/p>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Application<\/th>\n<th>How to use<\/th>\n<th>Rate<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>General agriculture &#038; soil conditioning<\/td>\n<td>Blend or broadcast where a 50% humic claim is wanted. Incorporate to reach the root zone.<\/td>\n<td>300\u2013750 kg\/ha<\/td>\n<\/tr>\n<tr>\n<td>Granular \/ organic fertilizer<\/td>\n<td>Use as the humic component in a bagged fertilizer; the 50% cut supports a humic claim at moderate cost.<\/td>\n<td>15\u201340% of formulation<\/td>\n<\/tr>\n<tr>\n<td>Sodium \/ potassium humate feedstock<\/td>\n<td>React with NaOH or KOH to make water-soluble humate salts for agriculture and industry.<\/td>\n<td>per process<\/td>\n<\/tr>\n<tr>\n<td>Sulfonated humate production<\/td>\n<td>Sulfomethylate to make sulfonated humate for drilling-fluid and water-treatment use.<\/td>\n<td>per process<\/td>\n<\/tr>\n<tr>\n<td>Compound organic fertilizer<\/td>\n<td>Lift organic matter and humic acid to registered levels in an organic-mineral line.<\/td>\n<td>10\u201330% of formulation<\/td>\n<\/tr>\n<tr>\n<td>Composting and manure treatment<\/td>\n<td>Reduce nitrogen volatilisation and bind ammonia in the windrow.<\/td>\n<td>2\u20135% by weight<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"jf-sec\" id=\"packaging\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-pack[data-kb-block=\"kb-adv-headingkb-h2-pack\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Packaging &amp; Storage<\/h2>\n<table class=\"jf-tb\">\n<thead>\n<tr>\n<th>Pack size<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>20 kg \/ 25 kg<\/td>\n<td>Woven PP bag with inner PE liner \u2014 standard export packing<\/td>\n<\/tr>\n<tr>\n<td>50 kg<\/td>\n<td>Woven PP bag with inner liner \u2014 for high-volume programmes<\/td>\n<\/tr>\n<tr>\n<td>1000\u20131100 kg<\/td>\n<td>Jumbo bag with discharge spout, 4 lifting loops<\/td>\n<\/tr>\n<tr>\n<td>Custom<\/td>\n<td>Private-label printed bag, OEM specification, retail sizes on request<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Storage:<\/strong> Store under cover, on pallets, in a dry ventilated place. Up to 25% moisture \u2014 keep off bare concrete. Stable for years; may compact slightly, which breaks up easily. Shelf life: 24 months in original, unopened packaging.<\/p>\n<p class=\"jf-sub\">Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"cases\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-cases[data-kb-block=\"kb-adv-headingkb-h2-cases\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Successful Cases<\/h2>\n<div class=\"jf-cases\">\n<a class=\"jf-case\" href=\"\/application\/agriculture\/\"><span class=\"jf-case-tag\">Agriculture &middot; Humate Feedstock<\/span><\/p>\n<h4>Humate-salt manufacturer, China<\/h4>\n<p>Buys 50% powder and reacts it with NaOH in-house to make sodium humate flakes for agriculture and aquaculture. Chose the 50% cut over the 70% grade because the reaction dilutes the analysis anyway, and the 50% cut was the cheapest raw humic acid that still met their incoming-specification floor.<\/p>\n<p><span class=\"jf-case-more\">Explore humic acid applications &#8594;<\/span><\/a><br \/>\n<a class=\"jf-case\" href=\"\/application\/agriculture\/\"><span class=\"jf-case-tag\">Agriculture &middot; Humate Feedstock<\/span><\/p>\n<h4>Fertilizer blender, Turkey<\/h4>\n<p>Blends 50% powder at 20% into a registered humic fertilizer. Needed a printed humic-acid claim (which the 40% cut could not support) but did not want to pay the 60\/70% premium for a bulk blended product.<\/p>\n<p><span class=\"jf-case-more\">Explore humic acid applications &#8594;<\/span><\/a>\n<\/div>\n<p class=\"jf-sub\">Full case studies with crop data are published in our application sectors.<\/p>\n<\/div>\n<div class=\"jf-sec\" id=\"faq\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-faq[data-kb-block=\"kb-adv-headingkb-h2-faq\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"jf-faq\">\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Can I make sodium or potassium humate from this?<\/summary>\n<p>Yes \u2014 that is a primary use of the 50% cut. React it with caustic (NaOH for sodium humate, KOH for potassium humate) to get a water-soluble salt, or sulfomethylate it for drilling-fluid and water-treatment grades. We can toll the reaction or supply the finished salt separately.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Is 50% enough for a humic-acid claim on my label?<\/summary>\n<p>At 50% minimum it supports a humic-acid claim that the 40% cut cannot. If your claim is higher (60% or 70%), buy the corresponding grade. We will tell you the cheapest cut that meets your stated number.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>Can I use it in fertigation or a liquid tank?<\/summary>\n<p>No. It is water-insoluble and will block lines and emitters. For soluble use, convert it to a humate salt or use our potassium humate \/ fulvate ranges.<\/p>\n<\/details>\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\">\n<summary>How does it differ from the 40% and 70% cuts?<\/summary>\n<p>Same seam and grind, different humic-acid cut \u2014 40% \/ 50% \/ 60% \/ 70%. The 50% cut is the middle: enough for a humic claim and for humate-salt feedstock, without the premium of the high cuts. Buy the lowest cut that meets your specification.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<div class=\"jf-sec\" id=\"related\">\n<style>.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-headingkb-h2-rel[data-kb-block=\"kb-adv-headingkb-h2-rel\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2>Also Available in This Family<\/h2>\n<div class=\"jf-rel-strip\"><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-70\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 70% \u2013 Low-Ash Grade for Oilfield &amp;#038; Industrial Humates\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 70% \u2013 Low-Ash Grade for Oilfield &amp;#038; Industrial Humates<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-40\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 40% \u2013 Bulk Soil Amendment &amp;#038; Organic Fertilizer Base\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 40% \u2013 Bulk Soil Amendment &amp;#038; Organic Fertilizer Base<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/microbial-humic-granular-fertilizer\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Microbial-Humic-Granular-Fertilizer-1-150x150.webp\" alt=\"Microbial Humic Granular Fertilizer \u2013 Humic Granule + Bacillus Inoculant\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Microbial Humic Granular Fertilizer \u2013 Humic Granule + Bacillus Inoculant<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-prills\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Low-Moisture-High-Hardness-Humic-acid-round-balls-prills-1-150x150.webp\" alt=\"Insoluble Humic Acid Prills \u2013 2\u20134 mm High-Hardness, 5% Max Moisture\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Prills \u2013 2\u20134 mm High-Hardness, 5% Max Moisture<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-granule\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Granule-150x150.webp\" alt=\"Insoluble Humic Acid Granule \u2013 2\u20134 mm Disc-Granulated, 40% Humic Acid\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Granule \u2013 2\u20134 mm Disc-Granulated, 40% Humic Acid<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-crystal\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Irregular-Granule-150x150.webp\" alt=\"Insoluble Humic Acid Crystal \u2013 60% Humic Acid, 2\u20134 mm Irregular Granule\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Crystal \u2013 60% Humic Acid, 2\u20134 mm Irregular Granule<\/span><\/a><a class=\"jf-rel-thumb\" target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-60\/\"><span class=\"jf-rel-img\"><img src=\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder-150x150.webp\" alt=\"Insoluble Humic Acid Powder 60% \u2013 Standard Grade from Leonardite\" loading=\"lazy\" decoding=\"async\"><\/span><span class=\"t\">Insoluble Humic Acid Powder 60% \u2013 Standard Grade from Leonardite<\/span><\/a><\/div>\n<\/div>\n<div class=\"jf-cta\">\n<h3>Need a quotation or a sample?<\/h3>\n<p>Tell us your application, target market and packaging &mdash; we will come back with specification, price and lead time.<\/p>\n<p><a href=\"https:\/\/www.jingfenggroup.com\/contact\">Request a Quote<\/a>\n<\/div>\n<\/div>\n<p><script>\n(function(){\n  function init(){\n    var nav=document.querySelector('.jf-nav');\n    if(!nav){return;}\n    var links=[].slice.call(nav.querySelectorAll('a'));\n    function targetOf(a){\n      var h=a.getAttribute('href');\n      if(h){ if(h.charAt(0)==='#'){ return document.querySelector(h); } }\n      return null;\n    }\n    var secs=links.map(targetOf);\n    var ticking=false;\n    function onScroll(){\n      var navH=nav.offsetHeight;\n      var y=window.pageYOffset+navH+30;\n      var cur=0;\n      for(var i=0;i<secs.length;i++){\n        if(secs[i]){\n          if(secs[i].getBoundingClientRect().top+window.pageYOffset<=y){ cur=i; }\n        }\n      }\n      for(var j=0;j<links.length;j++){ links[j].classList.toggle('jf-active',j===cur); }\n      if(links[cur]){\n        if(nav.scrollWidth>nav.clientWidth){\n          var l=links[cur];\n          nav.scrollTo({left:l.offsetLeft-nav.clientWidth\/2+l.offsetWidth\/2,behavior:'smooth'});\n        }\n      }\n    }\n    links.forEach(function(a){\n      a.addEventListener('click',function(e){\n        var t=targetOf(a);\n        if(!t){return;}\n        e.preventDefault();\n        var navH=nav.offsetHeight;\n        var rect=t.getBoundingClientRect();\n        var top=rect.top+window.pageYOffset-navH-14;\n        if(top<0){top=0;}\n        window.scrollTo({top:top,behavior:'smooth'});\n        links.forEach(function(x){x.classList.remove('jf-active');});\n        a.classList.add('jf-active');\n      });\n    });\n    window.addEventListener('scroll',function(){\n      if(!ticking){ window.requestAnimationFrame(function(){ onScroll(); ticking=false; }); ticking=true; }\n    },{passive:true});\n    window.addEventListener('resize',onScroll);\n    onScroll();\n  }\n  if(document.readyState==='loading'){ document.addEventListener('DOMContentLoaded',init); } else { init(); }\n})();\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"Insoluble Humic Acid Powder 50%\", \"description\": \"50% humic acid leonardite powder: general agriculture, granulation and the feedstock for sodium\/potassium humate and sulfonated humate. COA per batch.\", \"brand\": {\"@type\": \"Brand\", \"name\": \"JINGFENG\"}, \"material\": \"Leonardite\", \"category\": \"Insoluble humic acid \/ leonardite raw material\", \"additionalProperty\": [{\"@type\": \"PropertyValue\", \"name\": \"Fulvic acid (dry basis)\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"Humic acid (dry basis)\", \"value\": \"50.0% min\"}, {\"@type\": \"PropertyValue\", \"name\": \"Potassium as K2O (dry basis)\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"Water solubility\", \"value\": \"\"}, {\"@type\": \"PropertyValue\", \"name\": \"pH\", \"value\": \"5.0 \u2013 7.0\"}, {\"@type\": \"PropertyValue\", \"name\": \"Form \/ particle size\", \"value\": \"Black powder\"}], \"url\": \"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-50\/\", \"offers\": {\"@type\": \"AggregateOffer\", \"priceCurrency\": \"USD\", \"availability\": \"https:\/\/schema.org\/InStock\", \"url\": \"https:\/\/www.jingfenggroup.com\/insoluble-humic-acid\/insoluble-humic-acid-powder-50\/\"}, \"sku\": \"JFHA-HA-P50\", \"image\": [\"https:\/\/www.jingfenggroup.com\/wp-content\/uploads\/2026\/09\/Insoluble-Humic-Acid-Powder.webp\"]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can I make sodium or potassium humate from this?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \u2014 that is a primary use of the 50% cut. React it with caustic (NaOH for sodium humate, KOH for potassium humate) to get a water-soluble salt, or sulfomethylate it for drilling-fluid and water-treatment grades. We can toll the reaction or supply the finished salt separately.\"}}, {\"@type\": \"Question\", \"name\": \"Is 50% enough for a humic-acid claim on my label?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"At 50% minimum it supports a humic-acid claim that the 40% cut cannot. If your claim is higher (60% or 70%), buy the corresponding grade. We will tell you the cheapest cut that meets your stated number.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use it in fertigation or a liquid tank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is water-insoluble and will block lines and emitters. 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COA per batch.<\/p>\n","protected":false},"featured_media":893,"menu_order":140,"template":"","tags":[],"product_class":[205],"class_list":["post-1327","product_item","type-product_item","status-publish","has-post-thumbnail","hentry","product_class-insoluble-humic-acid"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Insoluble Humic Acid Powder 50% | Humate Feedstock | JINGFENG<\/title>\n<meta name=\"description\" content=\"50% humic acid leonardite powder: general agriculture, granulation and the feedstock for sodium\/potassium humate and sulfonated humate. 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