| ChemGlobe: Sulfur: Electronic, thermal, and steric data along with basic information. |
| ChemicalElements.com: Sulfur: Basic information, atomic structure, and table of isotopes. |
| EnvironmentalChemistry.com: Sulfur: Atomic structure, chemical and physical properties, and table of nuclides. |
| It's Elemental: Sulfur: Basic physical and historical information. |
| LANL: Sulfur: History, properties, production, and uses. |
| Lenntech: Sulfur: Physical data, chemical properties, health and environmental effects. |
| Radiochemistry of Sulfur: Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] |
| Sulfur: Data tables and historic information. |
| Sulphur versus Sulfur: Some thoughts on the history of the spelling of the name of element 16: 'sulfur' vs 'sulphur'. |
| USGS Minerals Information: Sulfur: Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| Visual Elements: Sulfur: Image, general and physical information, source, uses, key isotopes, and ionisation energies. |
| WebElements: Sulfur: Extensive information on history, uses, occurrence, compounds, and properties of the element. |
| Wikipedia: Sulfur: Properties of the element, including its history, applications, and characteristics. |
Classical
