Sulfur
Synonyms: MICROTHIOL SPECIAL;RASULF;SULFUR;SULFUR, AAS STANDARD SOLUTION;SULFUR AD USUM EXTERNUM;SULFUR ATOMIC ABSORPTION STANDARD;SULFUR, COLLOIDAL;SULFUR FLOWERS
CAS: 7704-34-9
MF: S8
MW: 256.52
EINECS: 231-722-6
Melting point 114 °C
Boiling point 445 °C
density 2.36
vapor density 8.9 (vs air)
vapor pressure 1 mm Hg ( 183.8 °C)
Fp 168 °C
form powder
Water Solubility Insoluble
Merck 13,9059 / 13,9067
Chemical Properties yellow powder
General Description A pale yellow crystalline solid with a faint odor of rotten eggs. Insoluble in water. A fire and explosion risk above 450° F. Transported as a yellow to red liquid. Handled at elevated temperature (typically 290°F) to prevent solidification and makes transfers easier. Hot enough that plastic or rubber may melt or lose strength. Causes thermal burns to skin on contact. Cools rapidly and solidifies if released. Equipment designed to protect against ordinary chemical exposure is ineffective against the thermal hazard. Exercise caution walking on the surface of a spill to avoid breakthrough into pockets of molten sulfur below the crust. Do not attempt to remove sulfur impregnated clothing because of the danger of tearing flesh if a burn has resulted. May be irritatin to skin, eyes and mucous membranes. Used in sulfuric acid production, petroleum refining, and pulp and paper manufacturing.
Air & Water Reactions Flammable. Insoluble in water.