Sennelier Extra-Fine Artist Acryliques - Permanent Green Light, 60 ml tube

Pigment Information

This color contains the following pigments:

PY154-Benzimidazolone Yellow

PB15:3-Phthalo Blue

Pigment Name

PY154-Benzimidazolone Yellow

Pigment Type

monoazo

Properties

Benzimidazolone Yellow is a pigment with dull tints and an average drying time.

Permanence

Benzimidazolone Yellow has excellent lightfastness.

History

The benzimidazolone group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis.

Pigment Name

PB15:3-Phthalo Blue

Pigment Type

organic

Chemical Name

beta copper phthalocyanine

Chemical Formula

C32H16CuN8

Properties

Phthalo Blue PB15:3 is a structural variant of Phthalo Blue PB15 that produces more greenish tones.

Permanence

Phthalo Blues are completely lightfast and stable and are permanent for all paint uses. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.

History

Developed by chemists using the trade name Monastral Blue, the organic blue dyestuff now known as Phthalo Blue was presented as a pigment in November 1935 in London. Its discovery was accidental. The dark color was observed in a kettle where a dye was being made from a British dyestuff plant. The demand for such a pigment came from commercial printers who wanted a cyan to replace Prussian Blue.