Alwin research and fine chem one of the leading manufacturer and supplier. we offer extreme quality of sulfur alwin research and fine chem has been in this industry since 15 years . the molecular formula is s8. the molecular weight of256.52. sulfur it is asulfur is a yellow crystalline solid or powder. often transported in the molten state. .melting point: −114 °c. boiling point 445 °c. sulfur