Color Swatch created using heavy application/medium application/50% tint and was applied on acrylic primed canvas (7 oz) material.
This color contains the following pigments:
PY53—Nickel Titanium Yellow
Pigment Type
inorganic
Chemical Name
mixed metal oxide
Chemical Formula
(Ti,Ni,Sb)O2
Properties
Nickel Titanium Yellow is one of the cleanest and brightest of the inorganic pigments. It has a low tinting strength and average to slow drying time.
Permanence
Nickel Titanium Yellow has excellent lightfastness and outstanding stability with regard to chemicals, weather, and heat. It is durable in exterior conditions.
Toxicity
Nickel Titanium Yellow is not considered toxic.
History
Nickel Titanium Yellow was developed in the 1960s.
Alternate Names
Nickel Titanate Yellow, Nickel Yellow.
PG19—Cobalt Green
Pigment Type
n/a
Chemical Name
cobalt(II)-oxide-zinc(II)-oxide
Chemical Formula
CoO • ZnO
Properties
Cobalt Green is a pure, fairly opaque, moderately bright bluish-green with a low tinting strength and limited hiding power. It makes valuable grays and muted, minimalistic greens when mixed with other pigments. However, it can brown at full strength and fade when mixed with lead based whites. It is quick drying in oil form and is not widely used because its hue can easily be matched by mixing green and blue pigments with superior painting properties. It is currently not in wide use.
Permanence
Cobalt Green is completely lightfast. Its permanence is excellent, so it can be used in all painting techniques.
Toxicity
Cobalt Green is moderately toxic if inhaled or ingested. It is slightly toxic if it comes into contact with skin.
History
Cobalt comes from the Middle High German word kobolt, an underground goblin, because miners thought cobalt harmed silver ores. In 1780, the Swedish chemist Sven Rinmann developed a process for making a compound of cobalt and zinc (zinc oxide). It was introduced as a pigment in 1835, but poor tinting strength and high cost kept it in limited use throughout the next centuries. It gained some popularity among 19th century landscape painters.
Alternate Names
Green Smalt, Rinmann’s Green, Swedish Green, Zinc Green. Gellert Green is a similar variety, though it is made using a slightly different process.
