Sulfur (S8) is a yellow crystalline powder, a chemical element. is a naturally occurring volcanic brimstone deposit. Recovered during gas manufacturing as a flaked sulfur, and ground into powder. Sulfur is insoluble in water but soluble in carbon disulfide.

Its most common use is in the production of sulfuric acid for sulfate and phosphate fertilizers, and other chemical processes.

The element sulfur is used in matches, insecticides, and fungicides. It is a vital component in dyes, and in the treatment of certain skin diseases.