{"product_id":"azul-ultramar-claro","title":"Light Ultramarine Blue","description":"\u003cb\u003eColour:\u003c\/b\u003e Light Ultramarine Blue\u003cbr\u003e\u003cb\u003eLightfastness:\u003c\/b\u003e AA\u003cbr\u003e\u003cb\u003eOpacity:\u003c\/b\u003e Opaque\u003cbr\u003e\u003cb\u003ePigment:\u003c\/b\u003e PB29, PW6\u003cbr\u003e\u003cb\u003ePigment description:\u003c\/b\u003e Polysulphated Sodium Aluminium Silicate, Rutile Titanium Dioxide\u003cbr\u003e\u003cb\u003eASTM Lightfastness classification:\u003c\/b\u003e I\u003cbr\u003e\u003cb\u003ePigment classification:\u003c\/b\u003e Mixture\u003cbr\u003e\u003cb\u003eColour Index Number:\u003c\/b\u003e -\u003cbr\u003e\u003cb\u003eViscosity range (mPa.s):\u003c\/b\u003e 15,000 - 20,000\u003cbr\u003e\u003cbr\u003e\u003cb\u003eColour Index\u003c\/b\u003e\u003cbr\u003eThe pigments used are both inorganic and organic. The inorganic ones have been used since antiquity and the vast majority come from or are extracted from minerals and clays, such as natural earths, siennas, and ochres. Titanium pigments, carbon, ultramarine blue, cobalts and cadmiums also belong to this category. Many of them are currently synthesised in industrial processes. Organic pigments are more modern, developed at the beginning of the 20th century thanks to the new methods of synthesis in Organic Chemistry. These synthetic pigments are now a very important group in the manufacture of colours for artists, producing bright and luminous shades of extraordinary intensity with excellent stability and permanence. The range of organic pigments is currently very extensive and includes azo pigments, blues, phthalocyanine greens, dioxazines, pyrroles, anthraquinones, quinacridones, etc.","brand":"Vallejo Colors","offers":[{"title":"Default Title","offer_id":64141522239818,"sku":"22051","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/0963\/2330\/files\/vallejo-studio-acrylic-200ml-51.jpg?v=1793260708","url":"https:\/\/vallejocolors.com\/en\/products\/azul-ultramar-claro","provider":"Vallejo Colors","version":"1.0","type":"link"}