Michael Harding UltramarineBlue oil

Michael Harding Ultramarineblue oil . Oorganisk – nr 113 Nr. 113 är en vacker mellanblå. På 1820-talet upptäckte en natriumsulfosilikatförening som bildade mystiska blå avlagringar på sodaugnar, vilket gav ekonomiskt pressade konstnärer ett billigare alternativ till den sällsynta Lapis Lazuli-malmen från Afghanistan. Ultramarin har hög nyanskraft, ger gröna blåtoner och vackra violer med magenta och röda Lake-färger. Den fungerar också bra i gröna och gråa nyanser. Den enda svagheten är en känslighet för syror, som kan bleka färgen.

English

Michael Harding Ultramarineblue oil. Inorganic – No. 113 is an obviously beautiful mid-blue. The discovery in the 1820s of a Sodium Sulphosilicate compound, which had appeared as a mysterious blue deposit on soda-ash furnaces, was a liberating moment for financially challenged artists everywhere. Up to then the only available version of this compound was the often-unobtainable Lapis Lazuli ore, mined in Afghanistan. Ultramarine has a high tint power, and our chosen shade produce strong green shade blue hues and makes wonderful violets with Magenta and the red Lake colours. It is also useful in greens and greys. The only chemical weakness is a recorded sensitivity to atmospherically borne acids, which can bleach it out. Ultramarine Blue is one of the more difficult paints to make, as it forms an intractable runny syrup when first ground into oil, which must then be stabilized with a small amount of wax.