but the one Iridescent we caution against outdoor use without UV protection due to Nickel/Azo light sensitivity

Pigment Classification: InorganicColor Index Name: PY43Color Index Number: 77492Chemical Description: Natural Hydrated Iron OxideOpacity/Transparency: Semi-OpaqueLightfastness Rating: 1Permanency: ExcellentMunsell Notation Listing: Hue 9

0 G Value Chroma 4

Since then

The paper has a smooth texture and is acid-free and its deep black colour lends itself to creating huge contrast

sennelier pure pigments cadmium yellow deep Milk Chocolate but the one Iridescent weAt the end of the 19th century, when Sennelier was developing oil paints for his customers, who included great artists such as Czanne, Gauguin and Picasso, Gustave Sennelier realised that there was a need to produce some paint that contained the highest quality pigments. In trying to produce the best colours, Gustave noted that the original pigments came from selected traditional sources, while identifying the specific chemical composition of each