Bright Yellow Elemental Sulfur for Sulfuric Acid Manufacturing: Quality Parameters
Bright yellow elemental sulfur (CAS 7704-34-9) for double-absorption contact process sulfuric acid manufacturing requires minimum 99.85% dry purity, ash content below 0.05%, and organic bitumen below 0.01%–0.02%. Strict trace metal control of arsenic, selenium, and chlorides protects vanadium pentoxide (V2O5) converter catalysts and prevents acid mist.