Green iron oxide is the mixture of yellow iron oxide and organic pigment phthalocyanine blue. It doesn’t have high requirements of yellow iron oxide, but phthalocyanine blue is extremely difficult to disperse in water, which requires special methods. First, the phthalocyanine blue need to be dispersed in water to make water-based color paste, and then mixed with the hydrophilic iron yellow, then dried and crushed to make compound iron oxide green powder. It has the characteristics of good light resistance, weather resistance, acid resistance, alkali resistance and non-toxicity, as well as excellent dispersibility in water-based systems and cheap price. Therefore, it can be used in building materials in large quantities, also used as a colorant for cement, floor tiles and various water-based paints.
Technical Specifications and Color Alta of Green Iron Oxide Pigment
Item | Unit | Index Value | Test Method |
Contents | % | ISO1248 | |
Oil absorption | ml/100g | 25-35 | ISO787-5 |
Res.on 325 mesh | % | ≤0.3 | ISO787-7 |
Water soluble salts | % | ≤3.0 | ISO787-3 |
Moisture | % | ≤1.0 | ISO787-2 |
PH value | 6-9 | ISO787-9 | |
Ignition loss(1,000℃,1/2h) | % | DIN55913 | |
Bulk density | g/cm³ | 0.6-0.9 | ISO787-11 |
Specific gravity | g/cm³ | ISO787-10 | |
Particle size BET | µm | Eletron Micrographs | |
Dispersibility(Hegman) | µm | ISO787-20 | |
Tinting Strength(Compared with Standard) | % | 95-105 | ISO787-24 |
Color Difference ΔE (Compared with Standard) | ≤1.5 | ISO787-1 |
Item/Colour Alta | Primary Color | Dilute Color(TiO2: green iron oxide=5:1) |
Green 835 | | |
Green 5605 | | |