Gamblin 1980 Oils - PB15:2 Phthalo Blue
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 Blue: Warm blue was first made for printmaking ink
(cyan) to replace Prussian Blue in the 1920s. With clean, pure masstone and
transparency, Phthalo Blue, like all modern colours, has high tinting strength.
PIGMENT COMPOSITION AND PERMANENCE
- Pigment Name: PB15:2 Phthalo Blue (Copper phthalocyanine)
- Pigment Type: Organic
PROPERTIES
Phthalo Blue PB15:1 is a structural variant of Phthalo Blue
PB15 that produces more reddish tones.
PERMANENCE
Phthalo Blues are lightfast, stable, and permanent for all
paint uses. 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 Blues have no significant hazards, although those
made before 1982 contained some PCBs (polychlorinated biphenyls).
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
colour was observed in a kettle where a dye was made from a British dyestuff
plant.
The demand for such a pigment came from
commercial printers who wanted a cyan to replace Prussian Blue.
