Iron Oxide Black 318 (Pigment Black 11) CAS 12227-89-3 is a magnetic inorganic black pigment powder, excellent lightfastness, alkali resistance and hiding power. Widely used in construction, coatings, plastics, inks and cosmetics for colouring and anti-rust purposes. TNJ Chemical is the leading manufacturer and exporter since 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To inquire more, please contact sales@tnjchem.com
Product Information
Chemical Name: Iron Oxide Black
Synonym: Magnetite, Ferrous Ferric Oxide, Pigment Black 11CAS No.: 12227-89-3
EINECS: 235-442-5
Molecular Formula: Fe₃O₄
Molecular Weight: 231.54
Appearance: Black fine powder
Density: 4.8–5.1 g/cm³
Solubility: Insoluble in water, alcohol and alkali; soluble in concentrated hot acid
Magnetic property: Magnetic
Light fastness: Excellent
Stability: Stable to sunlight and atmosphere, resistant to alkalis
| Item | Standard |
|---|---|
| Appearance | Black fine powder |
| Fe₃O₄ content | ≥95.0 % |
| 105℃ Volatile | ≤1.0 % |
| Water soluble matter | ≤0.5 % |
| Residue on sieve (325 mesh) | ≤0.3 % |
| Oil absorption | 18–25 g/100g |
| pH value | 4.0–7.0 |
| Heavy Metal (Pb) | ≤10 ppm |
Use & Application
Construction industry: Colorant for colored cement, terrazzo, concrete tiles, asphalt and mortar.
Coatings & paint: Anti-rust primer, industrial paint, water-based paint, good hiding power.
Plastic & rubber: Colouring agent for PVC, PE, PP, rubber products.
Ink & ceramic: Toner raw material, ceramic glaze colouring.
Cosmetics: Safe colour additive for makeup, eye shadow and eyeliner (cosmetic grade).
Magnetic material: Raw material for magnetic powder and magnetic recording medium.
Packing: 25kg woven bag with inner PE bag.
Storage: Keep sealed, store in dry and ventilated place, avoid moisture.
Shelf life: 36 months.
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