1.Grade 99.5%

Sb2O3: 99.5%min, As2O3: 0.06%max, PbO: 1000ppm max, Fe2O3: 0.003%max, CuO: 0.003%max, Se: 0.003%max; Whiteness: 95.0min, Particle size:0.9-1.6um

2.Grade 99.8%

Sb2O3: 99.8%min, As2O3: 0.05%max, PbO: 600ppm max, Fe2O3: 0.005%max, CuO: 0.002%max, Se: 0.004%max; Whiteness: 96.0min, Particle size:0.3-0.9um/0.9-1.6um