Holbein Watercolour Vermillion Hue 15ml Tube

Vermilion Hue (W219) Vermillion Imit.

Transparent Pyrrole Orange (organic, aminoketone) 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.

Irgazin Orange historically was developed as a lead-free alternative opaque orange pigment. It is used in decorative, industrial, and automotive applications, often to colour plastics and polymers.

Pyrrole Red (organic, aminoketone) is opaque and has strong covering power. According to manufacturer Ciba, which uses the trade name Irgazin Red, it is a “clean, highly saturated mid shade red with high temperature resistance, excellent colour strength, outstanding chemical, solvent and bleed resistance, and good weather fastness.”

Pyrrole Red, historically used as an automotive paint and as a colourant in plastics, was developed as one of a range of pigments to replace lead based pigments. In art materials, it is often used as a synthetic and lightfast replacement for carmine, a lake pigment that was originally produced from the body of the cochineal insect. It is also used to replace the older naphthol reds, organic red pigments that are sometimes only marginally lightfast and weather-fast.

Isoindolinone Yellow (organic synthetic) is a high performance pigment of excellent brightness and an average drying time.

Historically, the first isoindoline pigments were patented in 1946, and commercial production of pigments in this group began in the 1960s. Several isoindoline yellow pigments are available.

• Pigments: Transparent Pyrrole Orange (organic, aminoketone) PO73, Pyrrole Red PR254, Isoindolinone Yellow (isoindolinone yellow) PY110
• Code OS
• Permanence: *** Absolutely permanent colour. Transparent Pyrrole Orange has been demonstrated to have excellent stability and lightfastness in automotive applications.
• Pyrrole Red is considered to have excellent lightfastness among organic pigments in its class. Tests in industrial applications have given it scores of 7-8 on the Blue Wool Scale.
• Isoindolinone Yellow has excellent lightfastness.
• Opacity/Transparency: Opaque,
• Staining Quality: Staining colour
• Quality: Exceptional
• Price Series: A
• 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."
• According to the Australian government's Ministry on Health and Aging, "The notified chemical exhibited low oral and dermal toxicity in rats, did not exhibit toxic effects when administered orally to rats for 28 days, was not a skin irritant in rabbits, was not a skin sensitizer in guinea pigs, was not mutagenic in bacteria and was not blastogenic in CHO cells in culture. However, the notified chemical was a slight eye irritant in rabbits. On the basis of submitted data, the notified chemical would not be classified as hazardous in accordance with Approved Criteria for Classifying Hazardous Substances."
• Isoindolinone Yellow is not considered toxic.