Holbein Irodori Artist Gouache - Spring Green, 15 ml, Tube

Pigment Information

This color contains the following pigments:

PY14-Diarylide Yellow 14

PG7-Phthalo Green

Pigment Name

PY14-Diarylide Yellow 14

Pigment Type

organic, disazo

Properties

Pigment PY14 offers a bright yellow.

Permanence

Pigment PY14 has been reported to fade with exposure to the sun.

History

The diarylide yellows are a family of bright yellow pigments with a similar molecular structure. Discovered by Grieshiem-Elektron, Pigment Yellow 14 has been used in lithographic and offset printing applications, textiles, plastics, and paints.

Pigment Name

PG7-Phthalo Green

Pigment Type

organic

Chemical Name

polychlorinated copper(II) phthalocyanine

Chemical Formula

C32H3Cl13CuN8 to C32HCl15CuN8 or C32H16CuN8Cl15 (PG7) or C32Br6Cl10CuN8 (PG36)

Properties

Phthalo Green is a transparent, cool, bright, high intensity color used in oil and acrylics. It comes from a Phthalocyanine Blue pigment where most of the hydrogen atoms have been replaced with chlorine, forming highly stable molecules. It has similar pigment properties and permanence to Phthalo Blue. It is slow drying and an excellent base color for mixing a range of bright greens. Phthalo Green is considered a very good alternative to Viridian because it is intense and mixes well and can be used to emphasize mineral colors in various tints. However, its tinting strength is very high, so it can overpower other colors. This pigment most closely resembles the discontinued and toxic Verdigris.

Permanence

Phthalo Greens are completely lightfast and resistant to alkali, acids, solvents, heat, and ultraviolet radiation. 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.