Gamblin 1980 Oils - PG7 Phthalo Green
Gamblin’s approach is different. 1980 colours contain pure
pigments, the finest refined linseed oil, and marble dust (calcium carbonate).
Since oil painting began, these three ingredients have made more affordable colours.
Painters experience true colours without homogenized texture
or muddy colour mixtures. Gamblin's approach to using traditional raw materials and processes ensures that artists experience the luscious working properties they expect from their oil colours.
Phthalo Green: A dark bluish green more closely resembles
Verdigris than Viridian. First manufactured in 1927, Phthalo Green has high
tinting strength and transparency. Consider using Phthalo Emerald, a warmer and
more natural-looking colour.
PIGMENT COMPOSITION AND PERMANENCE
- Pigment Name: PG7 Phthalo Green (Chlorinated
polychlorinated copper(II) phthalocyanine)
- Pigment Type: Organic
PROPERTIES
Phthalo Green is a transparent, cool, bright, high-intensity
colour used in oil and acrylics. It comes from a Phthalocyanine Blue pigment in
which most hydrogen atoms have been replaced with chlorine, forming highly
stable molecules. It has pigment properties and permanence similar to Phthalo
Blue.
It is slow drying and an excellent base colour for mixing a
range of bright greens.
Phthalo Green is considered an excellent alternative to
Viridian because it is intense, mixes well, and can be used to emphasize
mineral colours in various tints. However, its tinting strength is very high so that it can overpower other colours. 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. Due to their
stability, they are currently used in inks, coatings, and many plastics and are
considered a standard pigment in printing ink and the packaging industry.
TOXICITY
Phthalo Green has no significant hazards but contained PCBs
(polychlorinated biphenyls) until 1982.
HISTORY
This bright blue-green was developed in 1935 and
has been used since 1938.
