Iron oxide Black 772 Appearance: Black powder Content: 93% Moisture: 1.0% Water-soluble Matter: 0.5% 45UM Sieve Residue: 0.3% PH Value: 5-8 Oil Absorption: 15-25 Tinting strength: 95-105% Density approx: 4.5-5.0 cm3 Contact: Knight E/M: phenixwand at hotmail dot com