R&F Encaustic Paint Block - Chromium Oxide Green, 40 ml
Cool, low intensity. Over dark colours, it can almost float. Makes beautiful olive tints.
- Pigment Composition: PG17-Chromium Oxide Green
- Paint Lines: Encaustic Pigment Stick
- Opacity: Opaque
- Pigment Stick Drying Rate: Medium
- Classification: Synthetic Inorganic
- Chemical Composition: Anhydrous Chromium Sesquioxide
- Safety Information: Conforms to ASTM D-4236
- Safety Warnings: This product contains cadmium, a chemical known to the State of California to cause cancer.
Pigment Name: PG17-Chromium Oxide Green
Classification: Synthetic Inorganic
Chemical Composition: Chromium oxide
Properties
Chromium Oxide Green is an entirely opaque, dull, dense, willow, or pale green colour. It has an average drying time and a low tinting strength. It is relatively flexible in oil form and suitable for all purposes and mediums. This pigment is less versatile in mixtures than Viridian and Phthalocyanine Green, but it 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 was limited to use as a pigment until 1862 because of its cost. It is the most commonly used green for military camouflage because it appears the same shade as living foliage under infrared light.
