<Tr> <Td> </Td> <Td> This section needs expansion with: the keratolysis mechanism . You can help by adding to it . (March 2014) </Td> </Tr> <P> Sulfur is converted to hydrogen sulfide (H S) through reduction, partly by bacteria . H S kills bacteria (possibly including Propionibacterium acnes which plays a role in acne,) fungi, and parasites such as scabies mites . </P> <P> Sulfur can be used to create decorative inlays in wooden furniture . After a design has been cut into the wood, molten sulfur is poured in and then scraped away so it is flush . Sulfur inlays were particularly popular in the late 18th and early 19th centuries, notably amongst Pennsylvania German cabinetmakers . The practice soon died out, as less toxic and flammable substances were substituted . However, some modern craftsmen have occasionally revived the technique in the creation of replica pieces . </P> <P> Sulfur is an essential component of all living cells . It is the seventh or eighth most abundant element in the human body by weight, about equal in abundance to potassium, and slightly greater than sodium and chlorine . A 70 kg (150 lb) human body contains about 140 grams of sulfur . </P>

Is a yellow powder a metal or nonmetal