Gamblin 1980 Oils - PG17-Chromium Oxide 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.
Chromium Oxide Green: Land painters use a muted, earthy,
opaque green. Chromium Oxide Green is an entirely opaque, dull, dense, willow
or pale green. It has an average drying time and a low tinting strength. It is
relatively flexible in oil form.
PIGMENT COMPOSITION AND PERMANENCE
- Pigment Name: PG17-Chromium Oxide Green (Anhydrous chromium
sesquioxide)
- Pigment Type: inorganic
PROPERTIES
Chromium Oxide Green is an entirely opaque, dull, dense,
willow or pale green. It has an average drying time and a low tinting strength.
It is relatively flexible in oil form and is suitable for all purposes and
mediums.
This pigment is less versatile in mixtures than Viridian and
Phthalocyanine Green but mixes well with other colours without overpowering
them.
PERMANENCE
Chromium Oxide Green has excellent permanence, even at high
temperatures.
TOXICITY
Chromium Oxide Green is slightly toxic. Evidence of Chromium
(III) carcinogenicity is inconclusive. Chromium (III) salts appear in greenish
pigments such as PG17. Chromium (VI) salts, which appear in yellowish pigments,
have been proven to cause cancer.
HISTORY
Louis-Nicolas Vauquelin discovered the element chromium in
lead chromate in 1797. It began to be used as an enamel and ceramic colour in
1809, but because of its cost, its use as a pigment was limited until 1862. It is the most commonly used green for military camouflage
because it appears the same shade as living foliage under infrared light.
