Zinc Iron Chromite Brown Pigment

Description

Zinc Iron Chromite Brown (PBr33) is a handmade single pigment zinc iron chromite brown orange spinel pigment. Built on a mixed oxide spinel structure of zinc, iron, and chromium, it forms an extremely stable mineral matrix. It produces a warm, earthy orange brown with a rich rust terracotta undertone and a deep, natural masstone. Compared to organic oranges this pigment is lower in chroma and more mineral, offering a grounded, architectural orange brown rather than a synthetic or overpowering hue.

In use, Zinc Iron Chromite Brown gives a controlled, robust color ideal for brick, tile, rooftops, terracotta, timber, dried leaves, earth, and warm shadows in landscape and figurative work. It has moderate to strong tinting strength with a semi-opaque to opaque character, allowing it to cover solidly in masstone while still producing luminous, earthy veils of color in thinner layers. It mixes beautifully with yellows for sunlit ochres and golden browns, with reds for deep tile and brick tones, and with blues, blacks, and other earths for a wide range of rich neutrals, shadow browns, and muted, natural oranges that stay clear rather than muddy.

This spinel pigment is chemically inert, heat resistant, and highly resistant to acids and alkalis, which makes it suitable across a wide range of binders and mediums. In artist's colors it offers a dependable, mineral orange brown that can function as a primary warm earth on the palette, an alternative to iron oxide browns, or a key mixer for historically inspired, architectural, and landscape palettes.

History

Zinc iron chromite browns and oranges were developed in the 20th century within the ceramic and industrial color industries as extremely durable mixed metal oxide pigments. By firing zinc, iron, chromium, and related compounds at high temperatures, chemists produced stable spinel and related structures with warm brown to orange hues that could withstand demanding kiln conditions and harsh outdoor exposure.

These pigments were first used in tiles, porcelain, architectural ceramics, powder coatings, and industrial finishes, where they were prized for their lightfastness, chemical resistance, and weathering stability. As interest in mineral based, ceramic origin pigments grew among artists and paintmakers, Zinc Iron Chromite Brown (PBr33) and its warmer orange leaning variants began to appear in artist paints as robust, low chroma earth colors with excellent permanence. Today Zinc Iron Chromite Orange is appreciated by painters who want a stable, architectural orange brown with a distinctly mineral character and a long record of technical reliability.

Pigment Information

Pigment Type: Synthetic (Inorganic) zinc iron chromite spinel brown orange
Suitable Mediums: Watercolor, Oil, Tempera, Acrylic, Lime / Fresco, Ceramic and cement applications
Lightfastness: Excellent
Opacity: Semi-opaque to opaque
Other Names: Zinc Iron Chromite Orange, Zinc Iron Chromite Brown, Mixed Oxide Brown (PBr33)
Color Index Code: PBr33

Health and Safety

• For art use only. Not for cosmetic, food or children's use.
• Keep out of reach of children and pets. Do not eat, drink or smoke while working.
• Avoid creating or breathing dust. Work in a ventilated area and wear a NIOSH approved dust respirator (P100 or better) when handling dry pigment.
• Wear gloves and eye protection. Wash hands and work surfaces after use, and never rinse pigment into drains.
• Do not spray apply, sand or burn.
• If swallowed or if you feel unwell, contact a poison control center (U.S. 1-800-222-1222) or a doctor.
• Safety Data Sheet available on request.