{"product_id":"manganese-blue","title":"Manganese Blue","description":"\u003cp\u003e\u003cstrong\u003eManganese Blue\u003c\/strong\u003e is a synthetic inorganic pigment powder that our supplier describes as barium manganate on barium sulfate (BaMnO\u003csub\u003e4\u003c\/sub\u003e·BaSO\u003csub\u003e4\u003c\/sub\u003e, PB33). It is a clean, light sky blue with a greenish tone, transparent and weak in tint, used in watercolor, gouache, egg tempera and acrylic. Industrial production of this pigment has ended, so it is now rare.\u003c\/p\u003e\n\u003ch2\u003eKey facts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e clean, light sky blue with a greenish tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePigment type:\u003c\/strong\u003e Synthetic inorganic pigment (barium manganate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour Index:\u003c\/strong\u003e PB33 (C.I. 77112)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e barium manganate(VI) with barium sulfate, BaMnO\u003csub\u003e4\u003c\/sub\u003e·BaSO\u003csub\u003e4\u003c\/sub\u003e (supplier data)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e synthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpacity:\u003c\/strong\u003e transparent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightfastness:\u003c\/strong\u003e 8 of 8 on the Blue Wool Scale (supplier data)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical resistance:\u003c\/strong\u003e alkali 5\/5, lime 5\/5 (supplier data, 5 = best); decomposed by acids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e acrylic, egg tempera, watercolor, gouache, lime and cement plaster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot recommended for:\u003c\/strong\u003e linseed oil (the yellowing oil turns it greenish)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e 25 g jar\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to use\u003c\/h2\u003e\n\u003cp\u003eBind it with gum arabic for watercolor and gouache, egg yolk for tempera, or acrylic medium, mixing gently with a palette knife. It is transparent with weak tinting strength, so it is easily overpowered in mixtures, and it tends to granulate in watercolor. Our supplier advises against linseed oil, which yellows and pushes it toward green. Keep it away from acids, which decompose it. Store dry in a closed jar.\u003c\/p\u003e\n\u003ch2\u003eAbout manganese blue\u003c\/h2\u003e\n\u003cp\u003eManganese blue was made from 1935 both as an artists' pigment and for coloring cement, especially for swimming pools. Production continued until the 1990s and then stopped because of environmental concerns and its toxicity. Most paints sold today as manganese blue are hues, usually based on phthalocyanine blue.\u003c\/p\u003e\n\u003ch2\u003eSafety\u003c\/h2\u003e\n\u003cp\u003eContains manganese and barium compounds: harmful if swallowed or inhaled; dispose of residues as hazardous waste. Handle dry pigment with care: avoid breathing the dust and contact with eyes. Wear a dust mask (FFP2\/N95) and gloves when working with the powder, work in a well-ventilated area and wipe up spills with a damp cloth. Do not eat, drink or smoke while working; wash your hands afterwards. Keep away from children and pets. For artistic and technical use only — not for cosmetics, food or tattoos.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eIs this genuine manganese blue or a hue?\u003c\/h3\u003e\n\u003cp\u003eOur supplier describes it as barium manganate on barium sulfate, Colour Index PB33: the composition of genuine manganese blue. Hues sold under this name are usually based on phthalocyanine blue.\u003c\/p\u003e\n\u003ch3\u003eCan I use manganese blue in oil?\u003c\/h3\u003e\n\u003cp\u003eIt is better in watercolor, gouache, tempera and acrylic. Our supplier advises against linseed oil, because the yellowing oil shifts the delicate blue toward green.\u003c\/p\u003e\n\u003ch3\u003eIs manganese blue lightfast?\u003c\/h3\u003e\n\u003cp\u003eOur supplier rates it 8 of 8 on the Blue Wool Scale, but some references describe genuine manganese blue as only moderately lightfast, so keep finished work out of strong sunlight.\u003c\/p\u003e","brand":"COLIBRI PIGMENTS LLC","offers":[{"title":"25g","offer_id":49303046193399,"sku":null,"price":19.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/6696\/9079\/files\/manganese-blue_1a0c1204-2507-4504-b8c5-7ff963e6029b.jpg?v=1793366801","url":"https:\/\/colibripigments.com\/products\/manganese-blue","provider":"Colibri Pigments","version":"1.0","type":"link"}