Item

Standard

Purity (by Weight)

99.5% min

Appearance

Colorless or Light Yellow Liquid

Color (SAYBOLT)

+10min

Sulphur Content

68.1% +/- 0.5%

Methyl Mercaptan

500ppm  max

Density (20/4℃)

1.062

Water Content

600ppm max

Melting PointΩ

-84.72--85℃

Flash Point (CC)

16℃

Boiling Point

108-110℃

Refractive Index

1.526 (20℃), 1.508 (30℃)

Surface tension(dynes/cm)

33.6(20℃),32.2(30℃)

Specific heat(25℃)

0.372 cal/g/℃

Electrical conductivity at 20℃

5.2x10^-7 Ω^-1 cm^-1

Ignition Residue

0.1% max

Dielectric constant

9.6         

Explosivity Limits Lower

1.1% (volume in air)

Explosivity Limits Upper

16.1% (volume in air)

Vapor Pressure

29.30 mbar(20℃), 38.12 mbar(25℃)

153.30 mbar (55℃)

Critical temperature

332℃

Critical pressure

47.4 bar

Dipole moment

95D

Coefficient of cubical expansion

0.0011℃^-1(20℃)

Heat of vaporization(25℃)

97.55 cal/g

Solubility

Slightly soluble in water:2.500ppm at 20℃,soluble in   light alcohols,ethers and aliphatic and aromatic hydrocarbons