{"id":8438,"date":"2026-03-03T11:50:39","date_gmt":"2026-03-03T03:50:39","guid":{"rendered":"https:\/\/www.honorpigment.com\/en\/ultimate-guide-optical-brightener-ob-coatings\/"},"modified":"2026-03-03T11:50:39","modified_gmt":"2026-03-03T03:50:39","slug":"ultimate-guide-optical-brightener-ob-coatings","status":"publish","type":"post","link":"https:\/\/www.honorpigment.com\/uz\/ultimate-guide-optical-brightener-ob-coatings\/","title":{"rendered":"Optical Brightener OB for Industrial Coatings Ultimate Guide"},"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\/03\/image_1772509615-a2gkf768.webp\" alt=\"White coated panels under UV showing blue fluorescence from Optical Brightener OB compared to a yellow-tinted control panel in a lab setup\" class=\"wp-image-8437\" srcset=\"https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/03\/image_1772509615-a2gkf768.webp 1536w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/03\/image_1772509615-a2gkf768-300x200.webp 300w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/03\/image_1772509615-a2gkf768-18x12.webp 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n\n\n\n<p>Optical Brightener OB\u2014formally C.I. Fluorescent Brightener 184, CAS 7128-64-5\u2014is a workhorse additive that nudges white and clear coatings toward a crisper, cooler appearance. By converting near\u2011UV energy into blue\u2011violet emission, it offsets residual yellowness from binders, substrates, and aging, improving perceived whiteness in white, pastel, and clear films. This guide focuses on industrial coatings performance and formulation first, then maps the essentials of compliance so you know when claims are solid and when validation is required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Chemical identity and optical behavior basics<\/h2>\n\n\n\n<p>C.I. Fluorescent Brightener 184 is a benzoxazole\u2011based brightener (often called BBOT) with the IUPAC name 2,5\u2011bis(5\u2011tert\u2011butyl\u20112\u2011benzoxazolyl)thiophene. Typical identifiers include CAS 7128\u201164\u20115 and the formula C26H26N2O2S. It appears as a pale yellow to greenish\u2011yellow powder with a melting range commonly reported around 196\u2013203 \u00b0C. Canonical identity references include structured listings from suppliers and registries such as PubChem and TCI, which document synonyms and properties in line with coatings\u2011grade material descriptions. See the PubChem registry overview in Fluorescent Brightener 184 and TCI\u2019s substance page for cross\u2011checked identifiers.<\/p>\n\n\n\n<p>On the optical side, OB\u2011184 absorbs near\u2011UV (roughly below 400 nm) and typically emits around the blue\u2011violet band. Vendor spectra frequently place absorption maxima near 374\u2013375 nm and emission near 434\u2013435 nm measured in organic media like ethanol. Real films can shift these numbers slightly due to solvent, resin polarity, and concentration effects, so treat published peaks as orientation rather than absolute values. Representative vendor summaries and mechanistic context are available in sources like Raytop\u2019s product notes, Sinophor OB summaries, and an ACS Applied Polymer Materials article that discusses benzoxazole emissive behavior more generally.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Example identity references: PubChem entry for Fluorescent Brightener 184 and TCI\u2019s B1554 substance page<\/p><\/li><li><p>Spectral behavior background: Raytop OB pages and Sinocure\u2019s Sinophor OB summary, with mechanistic context from ACS Applied Polymer Materials 2024<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How OB works in paint films<\/h2>\n\n\n\n<p>Think of OB as a subtle blue highlighter that only lights up when UV is present. It absorbs near\u2011UV photons and re\u2011emits blue\u2011violet light, visually canceling a yellow cast. In white coatings that rely on TiO2 for opacity and brightness, OB complements scattering with fluorescence, pushing the shade toward a clean, cool white. In clear coats, small additions can make substrates look brighter and less aged\u2014provided you do not over\u2011blue and you validate clarity.<\/p>\n\n\n\n<p>A few interactions are worth screening early:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Titanium dioxide synergy: TiO2 enhances brightness and opacity via scattering; OB adds a fluorescent component, which can read as \u201cwhiter than white.\u201d Too much OB, however, can skew the shade or create an unnatural blue under UV\u2011rich lighting.<\/p><\/li><li><p>UV absorbers and HALS: Packages that protect films outdoors can attenuate OB\u2019s excitation band. If you pair benzotriazole or benzophenone UV absorbers with OB, expect reduced fluorescence; test under the intended spectrum and dose accordingly. HALS primarily act on radical pathways and are less likely to quench directly, but full package interactions should still be validated.<\/p><\/li><li><p>Pigment and dye systems: Strong tints may mask OB\u2019s effect; pastels usually benefit most. In high\u2011chroma systems, OB is often unnecessary and can introduce metamerism.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended use levels and incorporation by coating type<\/h2>\n\n\n\n<p>Here\u2019s the deal: start lean and earn your way up. For industrial coatings, practical lab starting points are conservative and require ladder testing.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>General starting range: 100\u2013500 ppm total formula basis, equivalent to about 0.01\u20130.05 wt%. If the benefit plateaus or you see blue bias, step down. If the film still reads warm after initial testing, you can step up in small increments. As an upper bound for trials, 0.1 wt% is a reasonable ceiling for many systems; beyond that, risks of haze, saturation, or odd metamerism typically outweigh gains.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Incorporation methods by system<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Solventborne coatings: Pre\u2011dissolve OB\u2011184 in a compatible solvent or plasticizer and add at let\u2011down, or incorporate in the grind if your pigment vehicle can solubilize it. Ensure complete dissolution to avoid specking; a short hold with moderate shear helps.<\/p><\/li><li><p>UV\u2011curable systems: Add directly to the oligomer\/monomer mix and screen against your photoinitiator package. Because OB absorbs near the UV\u2011A band, confirm that it doesn\u2019t shadow initiator absorption. Validate under the exact lamp spectrum and dose.<\/p><\/li><li><p>Waterborne coatings: OB\u2011184 is not water\u2011soluble. Use a co\u2011solvent approach or prepare a high\u2011solids concentrate in a water\u2011miscible carrier. Surfactant\u2011assisted dispersion or emulsified delivery can work, but stability varies by resin chemistry. Patent literature outlines aqueous incorporation strategies; pilot\u2011scale stability checks are mandatory.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Validation guidance<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Always specify your target whiteness or CIE L<em>a<\/em>b* target and \u0394E tolerance before running ladders. Measure gloss and haze in clear coats to ensure the fluorescent boost doesn\u2019t cost clarity. For heat\u2011cured systems, measure before and after bake to catch any early fluorescence loss.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Performance validation plan without guesswork<\/h2>\n\n\n\n<p>Set up a compact matrix and measure what matters:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Color metrics: Use ASTM D2244 to calculate color differences and report \u0394E2000 where appropriate. Pair with ASTM E313 for whiteness and yellowness indices. For white and pastel paints, track both WI and \u0394E change vs. a retained control.<\/p><\/li><li><p>Photostability: If outdoor or UV\u2011intense lighting is in scope, run accelerated exposures such as ASTM G154 QUV or ASTM G155 Xenon arc, or the ISO 4892 series. Monitor fluorescence retention via UV\u2011Vis or a blue emission intensity proxy and correlate to \u0394E and WI drift across hours or cycles.<\/p><\/li><li><p>Thermal history and bake stability: For bake or IR\u2011cure systems, subject coated panels to your real curing schedule and a realistic over\u2011bake margin. Compare pre\u2011 and post\u2011bake shade and fluorescence.<\/p><\/li><li><p>Optical side effects: In clear coats, record haze, clarity, and gloss; in pigmented whites, watch for over\u2011blueing that appears under D65 but looks different under warm retail lighting. A simple dual\u2011illuminant check helps catch metamerism.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Helpful references for methods include the ASTM paint and coating standards overview and Q\u2011Lab\u2019s guidance pages for UV and weathering equipment, which outline practical exposure setups and controls.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QA and specification checklist you can use<\/h2>\n\n\n\n<p>Build your supplier and batch files so qualification moves faster and stays auditable. These fields are typical for OB\u2011184 in coatings supply; values are illustrative and may vary by vendor and lot.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col \/><col \/><col \/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Document or test<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>What to request or measure<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Typical notes for OB\u2011184<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>SDS<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Current region\u2011specific SDS<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Confirms hazard class, handling, and labeling<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>TDS<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Identity plus key properties<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CAS 7128\u201164\u20115, C.I. FB 184, melting 196\u2013203 \u00b0C, solubility notes<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>UV\u2013Vis<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Absorption and emission maxima<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Abs \u2248 374\u2013375 nm, Em \u2248 434\u2013435 nm measured in organic medium<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>COA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Assay, moisture, ash, fineness, shade index<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Assay \u226598\u201399.8%, moisture \u22640.5%, ash \u22640.5%, &gt;200 mesh, blue\u2011white shade vs standard<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Batch uniformity<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Tint or shade delta vs internal standard<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Define \u0394E acceptance, e.g., \u22641.0\u20132.0, premium \u22640.5<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Whiteness targets<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>WI and \u0394E specs for your SKU<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Record illuminant and geometry to ensure apples\u2011to\u2011apples<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Stability tests<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>QUV or Xenon and bake stability checks<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Record hours\/cycles, irradiance, temperature, post\u2011exposure \u0394E\/WI<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p>For identity and property cross\u2011checks, see registry resources such as the PubChem entry for Fluorescent Brightener 184 and supplier summaries that publish melting point and assay ranges. For color and appearance metrics, see ASTM\u2019s collection of paint and color standards.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Regulatory and compliance navigator FDA and EU basics<\/h2>\n\n\n\n<p>Food contact is where claims go from convenient to consequential. Separate non\u2011food industrial coatings from any packaging or FCM proposal and document your basis either way.<\/p>\n\n\n\n<p>United States snapshot<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>FDA 21 CFR indirect additives: During our checks, we did not find an explicit eCFR clause that names Fluorescent Brightener 184 by CAS with conditions of use for polymers or coatings in Parts 175\u2013178. We also did not locate an effective Food Contact Notification covering CAS 7128\u201164\u20115 in FDA\u2019s FCN inventory. Therefore, treat any blanket \u201cFDA compliant\u201d statements for OB\u2011184 as unverified unless you can cite a specific effective FCN or another lawful pathway that matches your intended use and conditions. You can review examples of FCNs in FDA\u2019s inventory to understand format and scope.<\/p><\/li>\n<\/ul>\n\n\n\n<p>European Union snapshot<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>EU plastics regulation 10\/2011: OB\u2011184 is not on the Union list Annex I for plastic food\u2011contact materials in the consolidated text. Without a positive listing, it is not authorized as an additive for plastic FCMs under 10\/2011. If a supplier proposes use via risk assessment in non\u2011plastic layers or in non\u2011food\u2011contact coatings, document the regulatory logic and testing.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Paper and board<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>BfR Recommendation XXXVI provides national guidance for paper and board. It requires that optical brighteners used in paper and board do not migrate to food, typically demonstrated by standardized tests such as DIN EN 648 achieving an evaluation score of at least 5. This recommendation does not itself authorize OB\u2011184 for plastics or coatings.<\/p><\/li>\n<\/ul>\n\n\n\n<p>REACH and regional frameworks<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Confirm REACH registration status and SVHC screening via the ECHA portal. Maintain region\u2011specific compliance files for UK REACH, K\u2011REACH, and others as applicable.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Primary references to consult include the EU 10\/2011 consolidated text on EUR\u2011Lex, BfR Recommendation XXXVI for paper and board, the FDA FCN database, and ECHA\u2019s substance information portal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Case patterns and quick troubleshooting<\/h2>\n\n\n\n<p>Patterns from field practice can help shape your test plan.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Architectural white enamel indoors: Start around 150\u2013300 ppm. Expect a measurable WI lift and a modest \u0394E decrease vs. the base white. If yellowing rebound shows up after UV exposure, pair a light UV absorber and validate that you still get enough OB excitation under your lighting.<\/p><\/li><li><p>Industrial clearcoat tracer use: At 50\u2013150 ppm, OB can act as a tracer under 365\u2013395 nm UV, making film uniformity checks quick on the line. Verify there\u2019s no haze or gloss penalty at your film builds.<\/p><\/li><li><p>Powder coating bake stability: Ladder 0.02\u20130.08 wt% through your cure profiles at 160\u2013200 \u00b0C for 10\u201330 minutes. Check fluorescence retention and \u0394E immediately after cure and again after a short over\u2011bake to simulate process variance.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Troubleshooting cues<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Diminished or no effect: Look for quenching by UV absorbers, excessive loading, or poor dissolution. Rework the incorporation path and check the lamp spectrum if UV\u2011cure.<\/p><\/li><li><p>Blue over\u2011tint: Step dosage down and balance with TiO2 grade or a minute amount of yellow tint. Always check under D65 and warm retail lighting to limit metamerism.<\/p><\/li><li><p>Yellowing after weathering: Add or rebalance the photostabilizer package. Validate across QUV or Xenon cycles and watch WI retention and \u0394E drift.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Supplier documentation checklist for faster qualification<\/h2>\n\n\n\n<p>Procurement and QA can speed approvals by asking for the right artifacts from day one:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>SDS aligned to destination market regulations<\/p><\/li><li><p>TDS with identity, melting range, typical \u03bbmax values, and recommended incorporation notes for coatings<\/p><\/li><li><p>Sample COA listing assay, moisture or volatiles, ash, fineness, and shade index against a retained standard<\/p><\/li><li><p>Batch\u2011uniformity statement with tint or shade variance controls and target \u0394E between lots<\/p><\/li><li><p>Regulatory statements, including REACH registration and SVHC status, any region\u2011specific declarations, and explicit FDA or EU 10\/2011 basis only if a primary citation or effective FCN exists for your intended use<\/p><\/li>\n<\/ul>\n\n\n\n<p>Suppliers such as <a target=\"_self\" rel=\"follow\" class=\"link\" href=\"https:\/\/www.honorpigment.com\/uz\/\">Sharaf pigmentlari<\/a> can provide SDS, TDS, and sample COA packages on request to support coatings qualification workflows. Keep these in your supplier scorecard, retain batch retains for \u0394E and whiteness comparisons, and link test panels to each COA for traceability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">References and further reading<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Identity and structure overview in the PubChem registry for Fluorescent Brightener 184 provides cross\u2011checked identifiers and links to related datasets: see PubChem\u2019s Fluorescent brightener 184 page.<\/p><\/li><li><p>TCI\u2019s substance entry for BBOT lists synonyms, molecular data, and catalog context consistent with coatings\u2011grade material identity.<\/p><\/li><li><p>For spectral behavior context and typical \u03bbmax values reported in organic media, see vendor summaries such as Raytop\u2019s OB\u2011184 notes and Sinocure\u2019s Sinophor OB overview.<\/p><\/li><li><p>For paint and color measurement practices including whiteness and \u0394E, consult the ASTM compilation of paint and coating standards.<\/p><\/li><li><p>For accelerated weathering method context, Q\u2011Lab\u2019s guides to QUV and Xenon arc exposures outline practical test setups and controls used widely in coatings.<\/p><\/li>\n<\/ul>\n\n\n\n<p>Cited links in context above<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>EU 10\/2011 consolidated text on EUR\u2011Lex: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A02011R0010-20241220\">https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A02011R0010-20241220<\/a><\/p><\/li><li><p>BfR Recommendation XXXVI paper and board for food contact: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/www.bfr.bund.de\/cm\/349\/XXXVI-Paper-and-Board-for-Food-Contact.pdf\">https:\/\/www.bfr.bund.de\/cm\/349\/XXXVI-Paper-and-Board-for-Food-Contact.pdf<\/a><\/p><\/li><li><p>FDA Food Contact Notification inventory examples for format context: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/hfpappexternal.fda.gov\/scripts\/fdcc\/index.cfm?set=FCN&amp;id=1458\">https:\/\/hfpappexternal.fda.gov\/scripts\/fdcc\/index.cfm?set=FCN&amp;id=1458<\/a><\/p><\/li><li><p>PubChem registry overview for Fluorescent Brightener 184: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Fluorescent-brightener-184\">https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Fluorescent-brightener-184<\/a><\/p><\/li><li><p>ASTM paint and coating standards overview: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/www.astm.org\/products-services\/standards-and-publications\/standards\/paint-standards-and-related-coating-standards.html\">https:\/\/www.astm.org\/products-services\/standards-and-publications\/standards\/paint-standards-and-related-coating-standards.html<\/a><\/p><\/li><li><p>Q\u2011Lab overview of QUV weathering test equipment: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/www.q-lab.com\/weathering\/equipment-accessories\/quv\">https:\/\/www.q-lab.com\/weathering\/equipment-accessories\/quv<\/a><\/p><\/li><li><p>Sinocure summary for Sinophor OB with typical spectral notes: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/www.sinocurechem.com\/sinophor-ob.html\">https:\/\/www.sinocurechem.com\/sinophor-ob.html<\/a><\/p><\/li><li><p>Raytop page with typical absorption and emission context for OB\u2011184: <a target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\" href=\"https:\/\/www.raytopoba.com\/fluorescent-brightener-OB-184-for-plastics_176.html\">https:\/\/www.raytopoba.com\/fluorescent-brightener-OB-184-for-plastics_176.html<\/a><\/p><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Coatings-first ultimate guide to Optical Brightener OB (C.I. Fluorescent Brightener 184): formulation tips, UV\u2011Vis data, QA checklist, and FDA\/EU compliance steps. Learn more.<\/p>","protected":false},"author":2,"featured_media":8437,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/posts\/8438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/comments?post=8438"}],"version-history":[{"count":0,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/posts\/8438\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/media\/8437"}],"wp:attachment":[{"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/media?parent=8438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/categories?post=8438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.honorpigment.com\/uz\/wp-json\/wp\/v2\/tags?post=8438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}