Cobalt Aluminate Blue Spinel Nanopowder (CoAl₂O₄)
Size: 300–500 nm
Product No: NG10NPW0950
Appearance: Blue Powder
Density: 4.3 g/cm³
pH: 7.5
Oil Absorption: 25 g/100g
Heat Fastness: ≥1000℃
Light Fastness: ≥8
Acid Fastness: ≥5
Alkali Fastness: ≥5
Pigment Index Number: PB28 77346
Cobalt aluminate blue spinel (CoAl₂O₄) is produced by calcining a mixture of cobalt (II) oxide and aluminum (III) oxide at high temperatures, resulting in an interdiffused crystalline spinel structure. The material may contain modifiers such as MgO, ZnO, Li₂O, and/or TiO₂. Cobalt blue pigments are among the most durable blue pigments available, offering outstanding chemical and thermal stability. They are suitable for chemically aggressive environments and exterior applications where color permanence is essential.
Cobalt aluminate blue pigment exhibits strong opacity in both ultraviolet and visible light ranges. It is chemically inert, heat resistant, stable under UV exposure, non-bleeding, and non-migratory. Its exceptional durability and hiding power make it ideal for applications requiring resistance to heat, light, and weathering. It is compatible with most resin systems and polymers and is non-warping, making it suitable for use in coatings, inks, dispersions, concrete, plastics, and similar systems.
Applications
IR Plastics:
- PVC applications including siding and window profiles
- Plastic roof tiles
- Automotive components such as dashboards, steering wheels, and upholstery
- Single-ply roofing systems
Cool Coatings:
- Coil coatings for roofs
- Exterior paints for roofs and façades
- Roof shingles
- Sports fields
- Automotive coatings
Construction / Building Materials:
- Cementitious stuccos, mortars, and grouts
- Exterior Insulation Finishing Systems (EIFS)
- Ready-mix concrete
- Precast concrete blocks and panels
