{"id":8511,"date":"2026-04-03T08:20:48","date_gmt":"2026-04-03T00:20:48","guid":{"rendered":"https:\/\/www.honorpigment.com\/en\/pigment-red-170-buyer-guide\/"},"modified":"2026-04-03T08:20:48","modified_gmt":"2026-04-03T00:20:48","slug":"pigment-red-170-buyer-guide","status":"publish","type":"post","link":"https:\/\/www.honorpigment.com\/es_cl\/pigment-red-170-buyer-guide\/","title":{"rendered":"Pigment Red 170 (PR170) Buyer Guide: Qualifying HP Red 2131 for Coatings, Plastics, and Printing Inks"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/04\/d73790f9-fcfa-455d-a6a7-ed69d98692a4.webp\" alt=\"Pigment Red 170 (PR170) pigment powder for coatings, plastics, and printing ink qualification\" class=\"wp-image-8510\" srcset=\"https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/04\/d73790f9-fcfa-455d-a6a7-ed69d98692a4.webp 1536w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/04\/d73790f9-fcfa-455d-a6a7-ed69d98692a4-300x200.webp 300w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/04\/d73790f9-fcfa-455d-a6a7-ed69d98692a4-18x12.webp 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n\n\n\n<p>Choosing a red pigment grade for production isn\u2019t only about shade. For most industrial teams, the real risk sits in qualification time, batch consistency, migration\/bleed behavior, and whether the supplier can support audits with the right documentation.<\/p>\n\n\n\n<p>This guide lays out a procurement-ready framework for evaluating <strong>C.I. Pigment Red 170 (PR170)<\/strong> for <strong>coatings, plastics &amp; masterbatch, and printing\/packaging inks<\/strong>\u2014with a clear checklist you can use to qualify a specific grade such as <strong>Pigment Red 170F5RK \/ HP Red 2131<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1) Pigment Red 170 (PR170): confirm identity and documentation first<\/h2>\n\n\n\n<p>Before you compare performance, lock down \u201cwhat exactly are we buying?\u201d This prevents avoidable re-qualification later.<\/p>\n\n\n\n<p><strong>Confirm these items up front:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Color Index (CI) name<\/strong>: C.I. Pigment Red 170 (PR170).<\/p><\/li><li><p><strong>CAS number<\/strong>: confirm via the supplier\u2019s <strong>SDS\/TDS<\/strong> (don\u2019t rely on email descriptions or informal spec sheets).<\/p><\/li><li><p><strong>Regulatory documentation set<\/strong>: at minimum, <strong>SDS<\/strong> and <strong>TDS<\/strong> for the exact grade you\u2019re qualifying.<\/p><\/li><li><p><strong>COA expectations<\/strong>: define what must appear on each batch <strong>Certificate of Analysis (COA)<\/strong> (test items, methods, limits, and traceability).<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>&#x26a0;&#xfe0f; Warning<\/strong>: If a supplier can\u2019t provide an SDS\/TDS\/COA package for the exact grade name you\u2019re ordering, treat that as a qualification risk\u2014especially when you operate change-control or approved vendor lists.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">2) Define pass\/fail requirements by end use<\/h2>\n\n\n\n<p>PR170 can be used across multiple applications, but qualification criteria shift depending on resin system, processing temperature, and exposure conditions. Define your \u201cdone means done\u201d requirements in your internal test plan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Coatings (industrial, automotive, powder)<\/h3>\n\n\n\n<p>For coatings, teams typically qualify PR170 around three themes: <strong>appearance<\/strong>, <strong>durability<\/strong>, and <strong>process robustness<\/strong>.<\/p>\n\n\n\n<p>Focus areas to include in your evaluation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Tinting strength \/ color development<\/strong>: confirm the shade target and strength relative to your internal standard.<\/p><\/li><li><p><strong>Dispersion behavior<\/strong>: evaluate how quickly you reach a stable grind and whether viscosity rises unexpectedly.<\/p><\/li><li><p><strong>Lightfastness and weathering<\/strong>: align the test condition to your end use (interior vs exterior; UV exposure expectations).<\/p><\/li><li><p><strong>Solvent and chemical resistance<\/strong>: check resistance against the solvents\/chemicals your coating actually sees.<\/p><\/li><li><p><strong>Heat stability<\/strong>: confirm the pigment holds shade and strength through your bake\/process window.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Plastics and masterbatch<\/h3>\n\n\n\n<p>For plastics, PR170 qualification often fails (or passes) on <strong>processing heat<\/strong>, <strong>migration\/bleed<\/strong>, and <strong>batch-to-batch stability<\/strong>.<\/p>\n\n\n\n<p>Focus areas to include in your evaluation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Heat resistance during processing<\/strong>: confirm the pigment tolerates your real melt temperature and residence time.<\/p><\/li><li><p><strong>Migration \/ bleed resistance<\/strong>: test against the substrates and additives you actually use (plasticizers, slip agents, contact layers).<\/p><\/li><li><p><strong>Dispersion in your carrier<\/strong>: check whether you need special dispersants or higher energy input to hit your QC targets.<\/p><\/li><li><p><strong>Color consistency<\/strong>: confirm that batch variation stays inside your \u0394E tolerance and does not force frequent formulation correction.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Printing and packaging inks<\/h3>\n\n\n\n<p>Printing inks add another layer: <strong>rheology<\/strong>, <strong>solvent exposure<\/strong>, and <strong>rub\/transfer performance<\/strong>.<\/p>\n\n\n\n<p>Focus areas to include in your evaluation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Dispersion and viscosity stability<\/strong>: confirm stable ink viscosity and no unexpected thickening over time.<\/p><\/li><li><p><strong>Solvent resistance<\/strong>: verify resistance relative to your solvent system and end-use contact scenario.<\/p><\/li><li><p><strong>Lightfastness and weathering<\/strong>: define exposure expectations (e.g., outdoor labels vs indoor packaging).<\/p><\/li><li><p><strong>Low migration \/ bleed<\/strong>: especially important when inks contact overprint varnishes, laminations, or sensitive substrates.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3) Qualification workflow you can run (sample to production)<\/h2>\n\n\n\n<p>A clean qualification process reduces risk and keeps procurement and technical teams aligned.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1 \u2014 Request a sample package that matches real production<\/h3>\n\n\n\n<p>Ask for samples that represent the grade you plan to buy (same treatment, same particle characteristics), plus the documentation set.<\/p>\n\n\n\n<p>Minimum request package:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>A <strong>sample<\/strong> of the grade<\/p><\/li><li><p><strong>TDS<\/strong> (Technical Data Sheet)<\/p><\/li><li><p><strong>SDS<\/strong> (Safety Data Sheet)<\/p><\/li><li><p>A <strong>COA example<\/strong> (what you will receive with each batch)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2 \u2014 Run lab-scale tests aligned to your failure modes<\/h3>\n\n\n\n<p>Don\u2019t test \u201ceverything.\u201d Test the things that cause scrap, rework, customer complaints, or regulatory friction.<\/p>\n\n\n\n<p>A practical test approach:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Define your internal <strong>pass\/fail criteria<\/strong> (shade, strength, dispersion time, migration\/bleed behavior, durability)<\/p><\/li><li><p>Use your own resin system, processing window, and substrate<\/p><\/li><li><p>Document your procedure so results are reproducible and auditable<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3 \u2014 Pilot \/ scale-up under real processing conditions<\/h3>\n\n\n\n<p>Many pigments look fine in lab drawdowns but drift at scale.<\/p>\n\n\n\n<p>In pilot runs, watch for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Shade shift after full thermal history<\/p><\/li><li><p>Dispersion variability run-to-run<\/p><\/li><li><p>Processing stability (filterability, viscosity, foaming issues where relevant)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4 \u2014 Lock change-control rules before you approve the supplier<\/h3>\n\n\n\n<p>If you work with approved vendor lists, build these items into supplier approval:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>COA requirements (tests included, frequency, traceability)<\/p><\/li><li><p>Definition of \u201cmaterial change\u201d (raw materials, process, site, treatment)<\/p><\/li><li><p>Notification expectations and re-qualification triggers<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4) Red flags and deal-breakers for procurement and QC<\/h2>\n\n\n\n<p>These issues commonly cause late-stage delays:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>No clear documentation trail<\/strong>: SDS\/TDS\/COA missing, inconsistent, or not grade-specific.<\/p><\/li><li><p><strong>Unclear batch traceability<\/strong>: COA cannot be tied to lot numbers and shipment documents.<\/p><\/li><li><p><strong>Vague fastness claims<\/strong>: performance statements without context (test condition, method, or internal standard).<\/p><\/li><li><p><strong>Unmanaged variation<\/strong>: frequent shade\/strength drift that forces ongoing correction in production.<\/p><\/li><li><p><strong>Logistics uncertainty<\/strong>: unclear packaging, inconsistent lead times, or weak communication during shipping disruptions.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Pro Tip<\/strong>: Treat \u201cdata turnaround time\u201d as a supplier KPI. Slow response on COA clarifications or test questions is usually a preview of slow response during a real quality event.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">5) What to request from the supplier (so your approval doesn\u2019t stall)<\/h2>\n\n\n\n<p>For decision-stage evaluation, buyers usually need more than a brochure. Ask for a package that helps you qualify and re-order reliably.<\/p>\n\n\n\n<p><strong>Documentation<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>TDS<\/strong>: key properties and recommended applications for the exact grade<\/p><\/li><li><p><strong>SDS<\/strong>: safety and handling information<\/p><\/li><li><p><strong>COA<\/strong>: batch-specific results and traceability<\/p><\/li>\n<\/ul>\n\n\n\n<p><strong>Quality &amp; supply information<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Batch identification and traceability approach<\/p><\/li><li><p>Packaging options and storage recommendations<\/p><\/li><li><p>Typical lead time and shipping terms<\/p><\/li><li><p>Support process for technical questions during trials<\/p><\/li>\n<\/ul>\n\n\n\n<p>If you\u2019re evaluating <strong>Pigment Red 170F5RK \/ HP Red 2131<\/strong>, you can start the conversation with <a target=\"_self\" rel=\"follow\" class=\"link\" href=\"https:\/\/www.honorpigment.com\/es_cl\/\"><strong>Honor Pigments<\/strong><\/a> and request the sample + document set above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Next steps: request samples and the qualification packet<\/h2>\n\n\n\n<p>If you\u2019re preparing to qualify PR170 for coatings, plastics\/masterbatch, or printing inks, the fastest way to reduce risk is to evaluate the grade with the right documents and a test plan that matches your real process.<\/p>\n\n\n\n<p><strong>Request:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>PR170 sample (HP Red 2131)<\/p><\/li><li><p>TDS + SDS<\/p><\/li><li><p>COA example + batch traceability details<\/p><\/li><li><p>Pricing, MOQ, and lead time<\/p><\/li>\n<\/ul>\n\n\n\n<p>Start at the Honor Pigments website to coordinate samples and technical documentation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Is PR170 the same as \u201cPigment Red 170F5RK\u201d?<\/h3>\n\n\n\n<p>PR170 is the <strong>Color Index<\/strong> category, while a grade name like \u201c170F5RK\u201d typically reflects a specific manufacturer\u2019s treatment and performance balance. Always qualify the exact grade using its SDS\/TDS and your application test plan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can I approve PR170 based on a lab drawdown only?<\/h3>\n\n\n\n<p>A drawdown is a good start, but most production issues show up during thermal history, scale-up dispersion, and migration\/bleed checks under real substrate and additive conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What documents should be non-negotiable for supplier approval?<\/h3>\n\n\n\n<p>For most procurement workflows: <strong>SDS, TDS, and COA<\/strong> for the exact grade, plus clarity on lot traceability and material-change notification expectations.<\/p>","protected":false},"excerpt":{"rendered":"<p>How to qualify PR170 for coatings, plastics, and printing inks: criteria, red flags, and what to request (SDS\/TDS\/COA).<\/p>","protected":false},"author":2,"featured_media":8510,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/posts\/8511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/comments?post=8511"}],"version-history":[{"count":0,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/posts\/8511\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/media\/8510"}],"wp:attachment":[{"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/media?parent=8511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/categories?post=8511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.honorpigment.com\/es_cl\/wp-json\/wp\/v2\/tags?post=8511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}