Pigment classification: Ammonium ferro(3+) hexa- cyano/C ferrat(4-)

Colour index number: 77360

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

Talens Ecoline Brush Pen Ultramarine Deep 506 is based on dyes and Gum arabic

Since then

sennelier pure pigments cadmium yellow deep Milk Chocolate Pigment classification: Ammonium ferro(3+) hexa-At 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