{"product_id":"golden-open-slow-drying-acrylic-paint-anthraquinone-blue-2-fl-oz-extended-open-time-astm-i-lightfast","title":"GOLDEN OPEN Slow-Drying Acrylic Paint Anthraquinone Blue (59 ml) — Extended Open Time, ASTM I Lightfast","description":"\u003cp\u003e\u003cstrong\u003eGOLDEN OPEN Slow-Drying Acrylics Anthraquinone Blue is a professional, slow-drying acrylic paint in a deep, reddish indanthrone blue designed for extended blending and glazing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 2 fl. oz. tube contains PB60 (Indanthrone) pigment formulated for artists who want more working time than traditional acrylics offer. With ASTM Lightfastness I, semi-transparent coverage, and a vegan formulation, this colour sits between ultramarine and phthalo in intensity—making it a dependable dark blue for shadows, night skies, and complex mixes. The OPEN series slows skin formation and curing on the palette, so colours remain workable for longer sessions without needing retarders or additives.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Anthraquinone Blue change my blending and glazing workflow?\u003c\/h3\u003e\n\u003cp\u003eThe slow-drying OPEN formula gives you extra minutes to blend edges, create smooth gradations, or layer thin glazes without rewetting. Because it retains workable consistency longer, you can refine transitions and control soft edges more predictably compared with standard acrylics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtended open time for wet-on-wet blending\u003c\/li\u003e\n  \u003cli\u003eThin glazes maintain transparency for layered colour depth\u003c\/li\u003e\n  \u003cli\u003eCleaner, smoother transitions in portraits and skies\u003c\/li\u003e\n  \u003cli\u003eMixes preserve hue longer on the palette\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the pigment and permanence characteristics of this tube?\u003c\/h3\u003e\n\u003cp\u003eAnthraquinone Blue uses pigment PB60 (Indanthrone), offering excellent lightfastness rated ASTM I. The colour is semi-transparent with strong tinting strength, making it suitable for mixes where controlled influence is needed rather than an overpowering phthalo effect.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePigment: PB60 (Indanthrone) — deep, reddish blue\u003c\/li\u003e\n  \u003cli\u003eLightfastness: ASTM I (Excellent) for archival stability\u003c\/li\u003e\n  \u003cli\u003eTransparency: Semi-transparent for nuanced layering\u003c\/li\u003e\n  \u003cli\u003eVegan formulation—no animal-derived ingredients\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I mix GOLDEN OPEN Anthraquinone Blue with other paints and mediums?\u003c\/h3\u003e\n\u003cp\u003eYes—this OPEN acrylic mixes well with standard acrylics, other OPEN colours, and most acrylic mediums. Mixing with faster-drying acrylics can help you fine-tune working time; adding compatible mediums adjusts viscosity and gloss without compromising pigment performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMixable with regular and OPEN acrylics for tailored drying times\u003c\/li\u003e\n  \u003cli\u003eWorks with acrylic gel and fluid mediums to alter texture and sheen\u003c\/li\u003e\n  \u003cli\u003eAvoid oil-based additives; use acrylic-compatible modifiers only\u003c\/li\u003e\n  \u003cli\u003ePreserves colour integrity when combined in careful ratios\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I store and handle this slow-drying acrylic to avoid waste?\u003c\/h3\u003e\n\u003cp\u003eBecause OPEN paints dry more slowly, keep caps tightly closed and store tubes upright in a cool, dry place to maintain consistency. Clean tools promptly after use; leftover paint on palettes will remain workable longer but should be covered or wrapped for extended storage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReseal tube cap fully to prevent skinning or contamination\u003c\/li\u003e\n  \u003cli\u003eStore in moderate temperatures away from direct sunlight\u003c\/li\u003e\n  \u003cli\u003eCover palettes with plastic wrap or airtight containers between sessions\u003c\/li\u003e\n  \u003cli\u003eWash brushes with warm water and mild soap immediately after painting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? GOLDEN OPEN Anthraquinone Blue is aimed at professional and serious hobbyist painters who need a dark, richly tinted blue with superior permanence and extended working time. It's especially useful for artists focused on portraiture, plein air landscapes at shifting light, printmaking proofs, and any technique requiring controlled blending or layered glazing. If you prefer acrylic convenience but want the extended working time typically associated with oils, this OPEN formula bridges that gap while keeping pigments archival and vegan-friendly.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does GOLDEN OPEN Anthraquinone Blue stay workable on the palette?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: OPEN acrylics keep paint workable significantly longer than standard acrylics; expect minutes to hours depending on ambient temperature and ventilation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this colour lightfast and archival?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Anthraquinone Blue (PB60) is rated ASTM Lightfastness I, offering excellent permanence in properly cared-for artworks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GOLDEN","offers":[{"title":"Default Title","offer_id":55254478520657,"sku":"B004XMFFLU","price":34.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/golden-open-anthraquinone-blue-front-tube.jpg?v=1791677131","url":"https:\/\/craftiche.co.uk\/products\/golden-open-slow-drying-acrylic-paint-anthraquinone-blue-2-fl-oz-extended-open-time-astm-i-lightfast","provider":"Craftiche","version":"1.0","type":"link"}