Rublev Colours Cobalt Yellow (commonly called aureolin) is a potassium cobalt nitrite. The compound was discovered in 1831 but not introduced as a pigment until after 1851. It is an intense yellow that has high tinting strength and low opacity, popular as a watercolor. In watercolors, cobalt yellow is a transparent, lightly staining, intense yellow.
|Single Pigment:||Cobalt Yellow (Aureolin)|
|Color Index:||Pigment Yellow 40 (77357)|
|Chemical Name:||Hydrated Tripotassium Hexanitrocobalt(II)|
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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.