Iron Oxide Black, with its CAS number 12227-89-3, is a widely recognized and utilized inorganic pigment that serves as a cornerstone in numerous industrial applications. Its characteristic black powder form, coupled with its impressive array of physical and chemical properties, makes it an indispensable component for manufacturers seeking reliable and versatile coloring solutions. This article delves into the key properties of Iron Oxide Black and explores its diverse range of industrial uses, highlighting why it remains a preferred choice for many procurement and R&D professionals.

At its core, Iron Oxide Black is a synthetic iron oxide compound with the molecular formula Fe₃O₄, often referred to as magnetite. Its appearance is consistently a deep black powder, which is crucial for achieving intense coloration. Key properties that make it highly desirable include its excellent opacity, meaning it can effectively cover underlying surfaces with a minimal amount of pigment. It also boasts superior lightfastness, which is its ability to resist fading when exposed to sunlight over time. This characteristic is vital for products intended for outdoor use or prolonged exposure to light.

Furthermore, Iron Oxide Black exhibits remarkable chemical stability. It is resistant to alkalis and many acids, allowing it to be incorporated into formulations that might otherwise degrade less stable pigments. This chemical robustness, combined with its heat stability, means it can withstand high processing temperatures often encountered in the manufacturing of plastics and ceramics without significant color degradation or change. Its non-toxic nature, especially in purer grades, also opens doors for its use in sensitive applications like cosmetics.

The applications of Iron Oxide Black are remarkably broad. In the coatings industry, it is a primary choice for manufacturing paints, lacquers, and varnishes, providing durable and weather-resistant black finishes for architectural, automotive, and industrial purposes. The plastics sector widely employs it as a colorant for various polymers, offering good dispersion and consistent coloration. For ceramics, it is used in glazes and body formulations to impart a permanent black hue that survives high firing temperatures.

Beyond these primary uses, Iron Oxide Black finds its way into polishes, inks, and even anti-corrosion paints, where its properties contribute to both aesthetics and protection. The availability of different grades, including cosmetic and pharmaceutical grades, further expands its utility. When considering purchasing Iron Oxide Black, buyers often look for suppliers who can guarantee consistent particle size, purity, and batch-to-batch uniformity. Working with established manufacturers and suppliers ensures access to technical support and competitive pricing, especially for bulk orders, facilitating informed purchase decisions.