Product Overview Pure-Flo® B80 by Oil-Dri is a naturally active bleaching and clarification adsorbent produced from an intergrowth of hormite- and smectite-type clay minerals. It is used in edible-oil refining and compatible liquid-purification processes where color reduction, residual-soap removal, phosphorus-related impurity reduction, trace-metal adsorption and filtration performance are important. Unlike acid-activated bleaching earths, B80 relies on the inherent activity of its mineral structure rather than mineral-acid activation. This gives B80 a distinct position within the bleaching-earth family and makes it useful to evaluate where treatment performance, filtration behavior, product retention and process economics must be considered together. For broader grade-selection guidance, see our Bleaching Clay & Purification Adsorbents collection and Oil Purification & Refining guide. Product: Pure-Flo® B80 Manufacturer: Oil-Dri Corporation of America Material type: Naturally active bleaching earth / bentonite-based purification clay Primary applications: Edible-oil refining, color reduction, residual-soap and phosphorus-related impurity reduction, trace-metal adsorption and clarification Activation: Naturally active; no mineral-acid activation Commercial format: 908 kg vendor supersack minimum .sd-summary-box, .sd-support-box, .sd-note-box, .sd-guide-box { margin: 1rem 0 1.25rem; padding: 1rem 1.1rem; border: 1px solid rgba(0,0,0,.10); border-radius: 8px; } .sd-summary-box { background: rgba(66,95,115,.05); } .sd-support-box { border-left: 4px solid var(--sd-accent,#425f73); background: rgba(66,95,115,.06); } .sd-note-box { border-color: rgba(161,98,7,.25); background: rgba(245,158,11,.07); } .sd-guide-box { border-left: 4px solid #36b66a; background: #eef7f1; } .sd-summary-box p, .sd-support-box p, .sd-note-box p, .sd-guide-box p { margin: .35rem 0; } .sd-specs, .sd-selection-table, .sd-comparison-table { width: 100%; max-width: 880px; border-collapse: separate; border-spacing: 0; } .sd-specs th, .sd-specs td, .sd-selection-table th, .sd-selection-table td, .sd-comparison-table th, .sd-comparison-table td { padding: 10px 12px; border-bottom: 1px solid rgba(0,0,0,.08); text-align: left; vertical-align: top; } .sd-specs th, .sd-selection-table th, .sd-comparison-table th { color: #374151; font-weight: 600; } .sd-specs th { width: 38%; } .sd-faq { max-width: 880px; margin: 10px 0; padding-bottom: 10px; border-bottom: 1px solid rgba(0,0,0,.08); } .sd-faq summary { cursor: pointer; font-weight: 600; color: var(--sd-ink,#111827); } .sd-faq__a { margin-top: 8px; color: var(--sd-slate,#374151); } .sd-faq__a p { margin: 0 0 8px; } Where Pure-Flo® B80 Fits Edible-oil refining: Bleaching and purification of compatible vegetable oils, animal fats and related refinery streams. Color reduction: Adsorption of compatible pigments and color bodies where the naturally active clay chemistry fits the feedstock. Residual-soap reduction: Treatment of remaining soaps following upstream refining steps. Phosphorus-related impurity reduction: Adsorption of residual phospholipid-related contaminants in compatible oil systems. Trace-metal reduction: Treatment of selected metals that may affect downstream stability, oxidation or processing. Clarification & filtration: Fine mineral adsorbent used with downstream filtration to remove the spent clay and associated contaminants. B80 belongs in the broad bleaching-earth branch - not the selective-adsorbent branch. B80 is most naturally evaluated where the objective is broad oil purification, color reduction and removal of compatible residual impurities. For more targeted pretreatment of soaps, trace metals and phosphorus-related contaminants, compare Pure-Flo® Select 350 and Pure-Flo® Select 450. Why Choose Pure-Flo® B80? Naturally active mineral structure: Provides bleaching and purification activity without mineral-acid activation. Oil-refining application fit: Designed around purification of edible oils and compatible refining streams. Broad treatment role: Can support reduction of pigments, residual soaps, phosphorus-related impurities and selected trace metals. Filtration considerations: Particle-size distribution and clay structure influence filter-cake behavior, filtration rate and retained product. Moderate surface chemistry: Naturally active grades may be useful where a less aggressively activated clay provides the preferred balance of purification and process economics. Established Oil-Dri product: Manufactured by Oil-Dri Corporation of America within the Pure-Flo® purification-media family. Final performance depends on feedstock, contaminant profile, dosage, temperature, contact conditions, filtration system and required finished-product quality. What Can B80 Help Reduce? Treatment Objective General Role Important Considerations Color bodies & pigments Core bleaching application Performance depends on pigment chemistry, feedstock condition, dosage and contact conditions. Residual soaps Common refining objective Incoming soap concentration and upstream refining efficiency affect required adsorbent dosage. Phospholipid-related impurities Compatible purification target Residual phosphorus levels and feedstock condition should be measured when this is a critical downstream specification. Trace metals Selected metals may be reduced Actual performance is element, feedstock and process dependent. Oxidation products May support reduction of compatible degradation compounds Adsorption varies with compound chemistry and oil condition. Suspended / entrained material Removed with the spent clay during filtration Clarification performance also depends on the filter system and cake formation. Important: B80 should not be assumed to remove every contaminant equally. Representative bench or production testing is recommended when changing feeds, grades or treatment conditions. Naturally Active vs. Activated Bleaching Earth Selection Factor Pure-Flo® B80 Activated / Specialty Bleaching Earth General treatment approach Naturally active mineral surface Surface properties modified through additional processing Acid activation No mineral-acid activation May include acid activation depending on product Typical selection emphasis Balance of purification, filtration behavior, product retention and economics May provide stronger or different adsorption behavior for certain feeds and contaminants Is one universally better? No. The appropriate grade depends on feedstock chemistry, contaminant profile, dosage, filtration and required finished-product quality. Need to compare B80 with another Pure-Flo® bleaching-earth grade? See Pure-Flo® Supreme B81 and Pure-Flo® Supreme 55 for other Oil-Dri bleaching-earth options. For category-level guidance, visit Bleaching Clays & Purification Adsorbents . Typical Specifications Form Fine powder Free moisture(wt.% @ 105 °C) 15.5% pH(5% solids in DI water) 7.2 Tamped density 688 g/L (43.0 lb/ft³) Particle size 83% through 325 mesh (
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