Kuretake Gansai Tambi Watercolor Pan - Graphite Green

Pigment Information

This color contains the following pigments:

PBk10-Blacklead

PG7-Phthalo Green

Pigment Name

PBk10-Blacklead

Pigment Type

inorganic

Chemical Name

graphite

Chemical Formula

C

Properties

Grayish black with metallic luster.

Permanence

Graphite is lightfast.

History

Graphite is a crystaline form of pure carbon that occurs naturally, and has been used to create pencils. It contains no lead. The most famous deposit is near Borrowdale, in England.

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.