Iron Oxide Yellow (Pigment Yellow 42 / FeOOH)
CAS Number: 51274-00-1
Synthetic Iron Oxide Yellow (Pigment Yellow 42, alpha-FeOOH goethite) is a robust inorganic yellow pigment produced by the controlled precipitation and oxidation of ferrous salts, offering excellent lightfastness, acid and alkali resistance, and non-toxicity at competitive pricing. It is the most widely used yellow inorganic pigment in construction materials, architectural coatings, and concrete coloring. Chemzip supplies iron oxide yellow in standard, fine, and transparent grades.
Technical Specifications
| appearance | Yellow to ochre powder |
| Fe2O3 equivalent (%) | ≥86.0 |
| oil absorption (g/100g) | 25–40 |
| water-soluble salts (%) | ≤0.5 |
Applications
- Concrete and cement coloring for construction
- Architectural exterior and interior paint
- Anti-corrosion primer as functional yellow pigment
- Plastics and rubber compounding yellow colorant
- Ceramic body and glaze yellow coloring
Key Features
- Outstanding UV and lightfastness for permanent exterior color retention
- Non-toxic and heavy-metal-free compliant with global construction material standards
- Thermally converts to iron oxide red above 180°C — predictable color shift in ceramics
- Available in standard, coarse, and micronized grades for diverse application needs
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CAS Number
51274-00-1
Category
Dye / Pigment IntermediatesAvailability
In StockSample
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