{"id":832,"date":"2019-10-19T15:03:30","date_gmt":"2019-10-19T13:03:30","guid":{"rendered":"https:\/\/nilacolori.com\/prodotto\/ultramarine-blue\/"},"modified":"2025-09-12T13:55:36","modified_gmt":"2025-09-12T11:55:36","slug":"handmade-watercolor-french-ultramarine","status":"publish","type":"product","link":"https:\/\/nilacolori.com\/en\/product\/handmade-watercolor-french-ultramarine\/","title":{"rendered":"Extrafine Handmade Watercolor French Ultramarine"},"content":{"rendered":"<p style=\"text-align: justify;\">Our <strong>Extrafine Handmade Watercolor French Ultramarine\u00a0<\/strong>is prepared with pure <strong>French Ultramarine<\/strong>\u00a0pigment, chemically sodium polysulfide and aluminosilicate. Between the end of the XVIII and the beginning of the XIX century, it people began to realize that the blue color of <strong>lapis lazuli<\/strong>\u00a0could be artificially produced. In the early decades of 1800 it was understood how this could be done and\u00a0<strong>Ultramarine Blue<\/strong> thus began to be produced. The process is quite simple and involves non-toxic inorganic reagents. The final product is a aluminosilicate with sulfur and sodium entrapped in its lattice.<\/p>\n<p style=\"text-align: justify;\">The <strong>Extrafine Handmade Watercolor French Ultramarine<\/strong> is made in Italy by Nila Colori and is prepared with this pure pigment, is<strong>\u00a0extremely lightfast<\/strong>,\u00a0<strong>semi-transparent<\/strong>\u00a0and has a <strong>medium to high tinting strength<\/strong>.<\/p>\n<p style=\"text-align: justify;\"><b>French Ultramarine<\/b>\u00a0pigment is milled with just the right amount of a mixture of<strong>\u00a0Kordofan gum arabic<\/strong> (binder) and <strong>vegetable\u00a0glycerin<\/strong>\u00a0(humectant and plasticyzer). These are the ingredients which are historically the main characters in the production of the watercolors and which give the best results regarding\u00a0<strong>ease and pleasantness of painting<\/strong>. We don&#8217;t add any filler or any other organic compound, which might alter the color over time.<\/p>\n<p style=\"text-align: justify;\"><strong>Code<\/strong>: UMB<\/p>\n<p><strong>Coloring agent<\/strong>:\u00a0Sodium polysulfide and aluminosilicate<\/p>\n<p><strong>C.I.<\/strong>:\u00a0PB29<\/p>\n<p><strong>Lightfastness<\/strong>: BWS 8\/8<\/p>\n<p><strong>Transparency<\/strong>:\u00a0Semi-transparent<\/p>\n<p><strong>Series<\/strong>: 2<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span style=\"font-size: 10pt;\"><strong>Extrafine Handmade Watercolor French Ultramarine<\/strong> by Nila Colori.<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Available in tubes, full pans and half pans.<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">The Extrafine Handmade Watercolor French Ultramarine by Nila Colori has been thoroughly assessed and certified by the Art and Creative Materials Institute (ACMI) for its safety, complying with the standards set by ASTM D 4236.<\/span><\/p>\n","protected":false},"featured_media":16274,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[58,152,377],"product_tag":[84,80,81,126,125,59],"class_list":["post-832","product","type-product","status-publish","has-post-thumbnail","product_cat-extrafine-handmade-watercolors","product_cat-extrafine-handmade-single-watercolors","product_cat-watercolor-tubes","product_tag-blue","product_tag-mineral","product_tag-modern","product_tag-sulfur","product_tag-synthetic","product_tag-watercolor","first","outofstock","taxable","shipping-taxable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product\/832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/comments?post=832"}],"version-history":[{"count":0,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product\/832\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/media\/16274"}],"wp:attachment":[{"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/media?parent=832"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product_brand?post=832"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product_cat?post=832"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/nilacolori.com\/en\/wp-json\/wp\/v2\/product_tag?post=832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}