Iron Oxide Black Pigment
The Generic Iron Oxide Black Pigment provides a high-tinting solution for integral coloring in cementitious mixes, concrete products, and masonry mortars. This synthetic mineral additive delivers deep, consistent black tones across large-scale construction projects. It maintains chemical stability in high-pH environments typical of concrete and mortar applications.
Built for the Job
Site supervisors and pre-cast manufacturers utilize this powder to achieve uniform aesthetics in paving blocks, roof tiles, and stamped concrete. Unlike organic dyes, this synthetic magnetite-based material resists fading under intense UV exposure and harsh weather conditions. It integrates directly into the mix during the dry-batch phase to ensure even distribution without clumping or streaking.
- In-situ concrete coloring for driveways, walkways, and architectural structural elements.
- Manufacturing of colored masonry units, including bricks, blocks, and stone veneers.
- Tinting of mortar joints and renders to match or contrast with facade materials.
Product Highlights
- Alkali and UV Resistance
- The chemical structure remains inert when mixed with lime and cement, preventing color leaching or degradation over time.
- High Tinting Strength
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- Fine particle size ensures maximum surface coverage of cement grains.
- Achieves deep black or slate grey shades with low dosage rates.
Iron Oxide Black Pigment Technical Specifications
| Specification | Detail |
|---|---|
| Chemical Class | Synthetic Iron Oxide (Fe3O4) |
| Color Index | Pigment Black 11 (77499) |
| Purity (Fe2O3) | 90% Minimum |
| pH Value | 5.0 – 8.0 |
| Oil Absorption | 15 – 25 g/100g |
| Sieve Residue | Max 0.5% (0.045mm) |
What’s Included
- 1 x 25kg Multi-wall Paper Bag of Iron Oxide Black Powder
On-Site & Workshop Notes
- Maintain consistent water-to-cement ratios across batches to prevent shade variations caused by efflorescence.
- Blend the pigment with dry sand and cement for at least 60 seconds before adding water to ensure streak-free results.
- Limit dosage to a maximum of 10% of the total cement weight to avoid compromising the structural integrity of the concrete.
- Store in a dry location; reseal opened bags immediately to prevent moisture absorption and contamination.
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