Fe as Fe3O4 11 % ¡Ý95£®0
Water soluble salts % ¡Ü0.5
pH-Value 5¡«7.5
Res.on 325 mesh % ¡Ü0.2
Moisture % ¡Ü1.0
Oil absorption ml/100g 20¡«30
SO4
Shade compared with Std. ¦¤E¡ï ¡Ü0.8
Relative tinting strength % 90¡«110
Bulk density g/ml 0.32
Speciffic gravity g/ml 5.0
Particle size by BET method ¦Ìm 0.23
Predominant particle size ¦Ìm 1.38
Heat-resistant temperature ¡æ ¡Ü190 *An original examination method |