Williamsburg Oil - Pyrrole Red, 150 ml tube
Handmade Oil Paint
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$57.39
Blick Art Materials · recorded Oct 21, 2026, 8:22 AM UTC
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Product details
- Size
- 150 ml
- Blick SKU
- 01571-7364
About this product range
Dedicated to handmade integrity, Williamsburg Handmade Oils are crafted by skilled American artisans using top-quality pigments from around the world. Each of the more than 140 colors in the line possesses a unique consistency and texture — some are slightly gritty, while others are extremely smooth. This is what makes Williamsburg Handmade Oils so unique and prized by the painters who choose them.
Colors are made in small batches no larger than five gallons at a time to ensure the highest level of control. Pigments are carefully ground to enhance the beauty and luminosity specific to each, and then combined with pure, premium, alkali-refined and pH-balanced linseed oil. Every ingredient is hand-measured, and every batch is scrutinized for quality.
Most Williamsburg Oils are considered to have excellent lightfastness (LF I), with the exception of Alizarin Crimson and Van Dyke Brown, which have very poor lightfastness (LFIII).
__Special Edition Colors__ — Williamsburg offers four Special Edition iron oxide colors that utilize the same pigments as standard Williamsburg colors, but are milled to a finer consistency to make them suitable for glazing. Transparent Yellow Iron Oxide is based on Stil De Grain, with a dark yellow-brown masstone that gives way to amber and light ochre when glazing. Transparent Orange Iron Oxide is based on Italian Pink, and produces a very deep red-orange masstone that results in rich orange-red glazes. Transparent Brown Iron Oxide has its origins in Dutch Brown, and results in translucent brown glazes reminiscent of coffee or tanned leather. Transparent Red Oxide is a finer version of Brown Pink, and results in red tones reminiscent of stained cherry wood when glazing.
Pigment information
General reference notes about pigments can describe other media (such as oil). They do not verify this product’s exact formulation or behavior.
Pyrrole Red
- Pigment code
- PR254
- Type
- organic, aminoketone
- Chemical name
- Bis-(p-chrolopheny)-1. 4-diketopyrrolo(3. 4-c)pyrrole
- Properties
- Pyrrole Red 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 color strength, outstanding chemical, solvent and bleed resistance, and good weatherfastness.”
- Permanence
- 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.
- Toxicity
- 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 rabbi
- History
- Pyrrole Red, used as an automotive paint and as a colorant 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 laked 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 weatherfast.
- Description
- Magnacryl Red, Versal Red, Microlith Red, Unisphere Red, Cromophtol Red, Irgazin Red.
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