Alizarin Crimson is the synthetic analog of the colorant from the roots of the plant Rubia tinctorum and that in past centuries was used to make madder lakes. Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red) is an organic compound with formula that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically. Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painters as Rose madder and Alizarin crimson.
The roots of the plant Rubia tinctorum supply the coloring substances that are converted to madder lakes, the principle coloring substance which is alizarin. The shades of colors of madder lakes vary from scarlet (stannous madder lakes), carmine red (carmine-containing madder lakes called madder carmine), pink madder (madder lakes with a high content of pseudopurpurin and/or purpurin called pink madder or rose madder), to red with a bluish tint (alizarin lakes).
Rublev Colours Alizarin Crimson Watercolor
Swatch Note: Colors swatches are shown in mass tone, at top, mixed with an equal amount of water and brushed out toward the bottom. All pictures of color swatches in this web site are only approximations of the actual color of the watercolor paint. We have taken every care to match the color in these pictures on calibrated color monitors to the actual color. However, because of the wide variance in color monitors the results you get may vary.Composition and Permanence
|Pigment Classification:||Natural inorganic|
|Colour Index:||Pigment Red 83|
|Chemical Name:||Alizarin (1,2-dihydroxyanthraquinone)|
|Chemical Formula:||C14H8O4, C14H8O5|
|Safety Information:||Based on toxicological review, there are no acute or known chronic health hazards with the anticipated use of this product. Always protect yourself against potentially unknown chronic hazards of this and other chemical products by avoiding ingestion, excessive skin contact, and inhalation of spraying mists, sanding dusts, and concentrated vapors.|
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Note: Some separation of pigment and medium may occur in Rublev Colours Watercolors and is a natural process when no stabilizers are added to paint to prevent this from occurring.