Sulfur, Elemental

CAS RN:7704-34-9

Property Summary

Autoignition Temperature:
    450 deg F (232 deg C)

Boiling Point:
    444.61 deg C

Density Specific Gravity:
    2.07 g/cu cm (Sulfur (rhombic)/; 2.00 (Sulfur (monoclinic)/

Flash Point:
    405 deg F (207 deg C) (Closed cup)

Melting Point:
    95.3 deg C /(Sulfur rhombic transforms to monoclinic)/; 115.21 deg C /Sulfur (monoclinic)/

Molecular Formula:
    S

Molecular Weight:
    32.06

Solubilities:
    Insoluble in water; slightly soluble in ethanol, benzene, ethyl ether; soluble in carbon disulfide /Sulfur (rhombic)/
    Insoluble in water; slightly soluble in ethanol, benzene, ethyl ether; soluble in carbon disulfide /Sulfur (monoclinic)/
    Insoluble in water. Sparingly soluble in alcohol, in ether; soluble in carbon disulfide (one gram/2 mL), in toluene
    Liquid ammonia (anhydrous) dissolves 38.5% sulfur at -78 deg C; acetone dissolves 2.65% at 25 deg C; methylene iodide dissolves 9.1% at 10 deg C; chloroform dissolves about 1.5% at 18 deg C
    Soluble in carbon disulfide, benzene, warm aniline and carbon tetrachloride, and liquid ammonia.

Vapor Density:
    Density of vapor/density of air, 470 deg C: 7.837

Vapor Pressure:
    3.95X10-6 mm Hg at 30.4 deg C

Viscosity:
    Dynamic viscosity of liquid (Pa.s): 0.17 at 120 deg C; 0.008 at 140 deg C; 0.0064 at 158 deg C; 5.952 at 160 deg C; 86.304 at 180 deg C; 93.0 at 187.8 deg C; 78.864 at 200 deg C; 3.72 at 300 deg C

Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed