Iron Oxide Red is chemically identified as Iron(III) oxide with the formula Fe₂O₃ and CAS number 1309-37-1. It exists as a finely milled red powder, an iron oxide mineral that occurs naturally but is widely produced synthetically to ensure purity and consistency. The pigment owes its color to the electronic structure of the ferric iron ions and the oxide lattice which absorbs light in specific wavelengths.
Its inorganic nature provides excellent stability, resisting photodegradation under sunlight and chemical attacks, unlike many organic pigments which can fade or degrade. This makes it especially valuable in exterior applications such as architectural coatings and concrete pigmentation where long-term appearance retention is critical.
In terms of performance, Iron Oxide Red is non-reactive, non-toxic, and thermally stable, withstanding temperatures up to 350°C without losing color integrity. It disperses well in different carrier media including water-based and solvent-based paints, plastics, and concrete mixes, ensuring even color distribution. The pigment’s particle size and surface treatment can be tailored to improve compatibility with specific binders and optimize opacity and tinting strength.
For procurement, confirming the pigment’s purity and grade is essential, as these affect color strength and stability. Zenco Systems Ltd provides specification details on request and supports industrial customers with technical advice to match pigment grade with their end-use process requirements. Our supply chain capabilities enable consistent delivery schedules throughout Kenya, Uganda, and Tanzania, ensuring that production lines remain uninterrupted.