Synthetic Iron Oxide Yellow

Updated: 2026-07-21

Overview

Synthetic Yellow Iron Oxide is an inorganic pigment chemically synthesized from iron salts, producing consistent color quality compared to natural iron oxides. It has been widely adopted across industries due to its non-toxic nature and superior performance characteristics. The pigment is manufactured through controlled precipitation or thermal decomposition processes, ensuring uniform particle size distribution. This results in excellent tinting strength and opacity, making it a preferred choice for applications requiring durability and color stability.

Physical and Chemical Properties

The pigment exhibits remarkable resistance to UV light, weathering, and alkali/acid exposure, maintaining its color integrity in harsh environments. Its crystalline structure contributes to high hiding power and excellent dispersibility in various media. Unlike organic pigments, synthetic iron oxides don't fade or migrate, making them ideal for long-lasting applications. The typical particle size ranges from 0.1 to 0.8 microns, with specific surface areas between 10-30 m²/g depending on the manufacturing process.

Main Applications

In the construction industry, it's extensively used for coloring concrete, mortar, paving stones, and roofing tiles. The coating industry utilizes it for both decorative and protective paints due to its weather resistance. The plastics sector incorporates this pigment in masterbatches for products requiring FDA compliance, such as food packaging and toys. Other significant applications include ceramic glazes, paper coloring, and cosmetic formulations where non-toxicity is crucial.

Safety and Storage

While classified as non-hazardous, proper handling procedures should be followed to minimize dust exposure. The pigment is stable under normal conditions but should be protected from strong acids that may dissolve it. Storage recommendations include keeping containers tightly sealed in dry conditions. Bulk quantities should be stored on pallets away from walls to prevent moisture absorption. The material is non-flammable and doesn't require special fire protection measures.

B2B Procurement Guide

Industrial buyers should specify technical parameters including color index (Pigment Yellow 42), iron oxide content (typically 85-95%), and residue on sieve (usually <0.5% on 325 mesh). Quality verification should include tests for tinting strength, oil absorption, and weathering resistance. For large-volume procurement, consider suppliers with ISO 9001 certification and batch-to-batch consistency guarantees. Container options range from 25kg bags to 1-ton super sacks depending on usage volume.