... 8 °C2, Specification:High Purity Sulfur:S-05 Grade 99.999. The content of Sulfur is above 99.999%. The total ... content of Al, As, Co, Cu, ... is bellow 10 ppm;Uitra Purity Sulfur:S-06 Grade 99.9999. The content of Sulfur is above 99.9999%. The ... total content of Al, Co, Cu, Fe, ...