Technical specifications
| PARAMETER | SPECIFICATION | TEST METHOD |
|---|---|---|
| CAS Number (Black) | 1317-61-9 | — |
| Chemical Formula (Black) | Fe₃O₄ (magnetite) | — |
| HS Code | 2821.10 | — |
| Fe content (Black) | ≥ 93% as Fe₃O₄ | ISO 1248 |
| Appearance (Black) | Black powder — blue undertone | Visual |
| Appearance (Brown) | Brown to reddish-brown powder | Visual |
| Oil Absorption (Black) | 18 – 30 g/100g | ISO 787-5 |
| Heat Stability (Black) | Up to 300°C stable | — |
| Heat Stability (Brown) | Up to 180°C stable | — |
| Lightfastness | Excellent — Grade 8 (Blue Wool) | ISO 105-B02 |
| Water-Soluble Matter | ≤ 0.5 % | ISO 787-3 |
| Packing | 25 kg PP bags, 500–1,000 kg Supersacks | — |
| CAS Number (Brown) | Blend / 12227-89-3 (synthetic) |
Applications
- Black Primer & Maintenance Coatings — Iron oxide black is used in black anti-corrosion primers, bituminous-look coatings, and industrial maintenance paints for steel structures across UAE and Saudi Arabia.
- Concrete Colouring — Dark Tones — Standard pigment for dark grey, charcoal, and black concrete paving blocks, tiles, and precast concrete products.
- Brown Architectural Paints — GCC Palette — Iron oxide brown is one of the most popular pigments for GCC and Middle East architectural paints — warm brown, terracotta, and earth tones are central to regional aesthetic preferences for residential and commercial buildings.
- Wood Stains & Coatings — Transparent iron oxide brown grades used in wood staining systems for furniture, doors, and architectural timber elements across UAE and Saudi Arabia.
- Asphalt & Road Surface Colouring — Iron oxide black used to improve asphalt aesthetics and heat absorption properties in road surfacing applications.
Key properties
- Fe₃O₄ (black): outstanding thermal stability to 300°C
- Brown: rich warm earth tones — central to GCC architectural palette
- Excellent lightfastness Grade 8 — no fading under GCC UV
- Full alkali resistance — stable in cement and concrete
- Non-toxic, REACH and SASO documentation available on request
- No prohibited heavy metals (lead, chromate, cadmium)
- Compatible with all standard binder systems
- Iron oxide black provides slight electrical conductivity in cured films
Usage and recommendations
Black loading: 1–8% in paint for black or dark grey tones; 5–15% in concrete. Brown loading: 2–12% in paint; 1–5% in concrete. Blend iron oxide black with red and yellow to achieve custom brown shades. Disperse in ball mill or high-speed disperser — adequate dispersion is critical for development of full colour strength. For the warmest GCC-style earth tones, blend iron oxide brown (3–8%) with titanium dioxide (15–20%) in an acrylic emulsion base.
Packaging
- 25 kg PP Woven Bags
- 500 kg Supersacks
- 1,000 kg Jumbo Bags
- Custom packing on request
Storage and shelf life
Store in original sealed bags in a cool, dry warehouse away from moisture. No defined shelf life when stored correctly. Maintain FIFO rotation.