Color Swatch created using heavy application/diluted application and was applied on cold press watercolor paper (150 lb) material.
This color contains the following pigments:
PO73—Transparent Pyrrole Orange
Pigment Type
organic, aminoketone
Chemical Name
dipyrrolopyrrol
Chemical Formula
n/a
Properties
Transparent Pyrrole Orange is a yellow-shade orange with optimum performance; high saturation and excellent durability, excellent bleed resistance, and intrinsic strength coupled with good opacity and moderate rheology. It is semi-opaque, less opaque than Cadmium Orange.
Permanence
Transparent Pyrrole Orange has been demonstrated to have excellent stability and lightfastness in automotive applications.
Toxicity
The Australian government's Department of Health and Aging, reported in its Summary Report: NA/238 that "Irgazin DPP Orange 16AOA is likely to be of low oral and dermal toxicity in humans and to be non irritating or very slightly irritating to the eyes and skin. It may cause lung irritation due to its particle size."
History
Irgazin Orange was developed as a lead-free alternative opaque orange pigment. It is used in decorative, industrial, and automotive applications, often to color plastics and polymers.
Alternate Names
Irgazin Orange, Bright Orange, Aritint Ornage, Unisphere DPP Orange, Dipyrrolopyrrol Orange
PO62—Benzimidazolone Orange
Pigment Type
organic, monoazo
Chemical Name
n/a
Chemical Formula
C17H13ClN6O5
Properties
Benzimidazolone Orange is a staining, yellowish orange pigment that can become dull in tints. It has an average drying time, and it loses some of its intensity as it dries. The yellowish orange varieties are more transparent.
Permanence
Benzimidazolone Orange has excellent lightfastness and outstanding heat and solvent stability for a monoazo pigment.
Toxicity
Benzimidazolone Orange is not considered toxic.
History
The benzimidazolone group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis. Use of benzimidazolone pigments in the auto industry, especially Benzimidazolone Orange, became common in the 1980s because they were common replacements for lead chromate pigments, which were phased out during this period.
Alternate Names
Permanent Orange, Benzimida Orange
