... power, light-fastness is good. Specifications Model:417/723/732/757 /779/987/722/792Usage: widely used in colored cement, bricks ... ~ 4%. Adequate mixing. Product Name: Iron Oxide Black Model: 417/757 /779/792 Test itemThe indicatorTest resultsFe3 O4 content, ≥%9496Water, ≤%1 ...