{"product_id":"manganese-violet","title":"Manganese violet","description":"\u003cp\u003e\u003cstrong\u003eManganese violet\u003c\/strong\u003e is a synthetic inorganic pigment powder, manganese ammonium pyrophosphate (PV16). It gives a saturated, semi-transparent violet that is very lightfast and well suited to glazes in oil, acrylic, egg tempera, watercolor and gouache. It is not lime-proof, so it is not used in fresco.\u003c\/p\u003e\n\u003ch2\u003eKey facts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e saturated violet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePigment type:\u003c\/strong\u003e Synthetic inorganic pigment (manganese phosphate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour Index:\u003c\/strong\u003e PV16 (C.I. 77742)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e manganese ammonium pyrophosphate, NH\u003csub\u003e4\u003c\/sub\u003eMnP\u003csub\u003e2\u003c\/sub\u003eO\u003csub\u003e7\u003c\/sub\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e synthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso known as:\u003c\/strong\u003e Nuremberg violet, permanent violet, mineral violet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpacity:\u003c\/strong\u003e semi-transparent (glazing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightfastness:\u003c\/strong\u003e 7.5–8 of 8 on the Blue Wool Scale (supplier data)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical resistance:\u003c\/strong\u003e resists dilute acids; strong acids and alkalis decompose it, and alkalis release ammonia\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e oil, acrylic, egg tempera, watercolor, gouache\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot recommended for:\u003c\/strong\u003e fresco and other lime-based or strongly alkaline paints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e 25 g jar · 1 kg bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to use\u003c\/h2\u003e\n\u003cp\u003eMull the powder into linseed oil, acrylic medium, egg yolk or gum arabic with a palette knife or muller. Its oil absorption is moderate (about 33 g per 100 g, supplier data). The hiding power is modest, so manganese violet shows best in glazes and clean violet mixtures over a light ground. In oil it may darken slightly over many years (supplier note). Keep it away from lime and other strong alkalis, which decompose it.\u003c\/p\u003e\n\u003ch2\u003eAbout manganese violet\u003c\/h2\u003e\n\u003cp\u003eManganese violet was developed in the 1860s by E. Leykauf as a cheaper substitute for cobalt violet and was first called Nuremberg (Nürnberg) violet. The first documented production as an artists' pigment, by Winsor \u0026amp; Newton, dates from 1890. It is valued for its permanence and high lightfastness, although its hiding power is poor.\u003c\/p\u003e\n\u003ch2\u003eSafety\u003c\/h2\u003e\n\u003cp\u003eDo not mix it with lime or other strong alkalis: they decompose the pigment and release ammonia gas. 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\u003eCan manganese violet be used in fresco?\u003c\/h3\u003e\u003cp\u003eNo. Lime is strongly alkaline and decomposes manganese violet. Use it in oil, acrylic, egg tempera, watercolor or gouache.\u003c\/p\u003e\n\u003ch3\u003eIs manganese violet lightfast?\u003c\/h3\u003e\u003cp\u003eYes. Our supplier rates it 7.5–8 of 8 on the Blue Wool Scale, and references rate PV16 ASTM I in oil and watercolor.\u003c\/p\u003e\n\u003ch3\u003eHow does it differ from cobalt violet?\u003c\/h3\u003e\u003cp\u003eBoth are permanent inorganic violets. Manganese violet is semi-transparent and was made as a cheaper substitute for cobalt violet, which covers better but contains cobalt.\u003c\/p\u003e","brand":"COLIBRI PIGMENTS LLC","offers":[{"title":"25g","offer_id":51694568374519,"sku":null,"price":14.9,"currency_code":"USD","in_stock":true},{"title":"1kg","offer_id":51696474620151,"sku":null,"price":520.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/6696\/9079\/files\/manganese-violet.jpg?v=1793370270","url":"https:\/\/colibripigments.com\/products\/manganese-violet","provider":"Colibri Pigments","version":"1.0","type":"link"}