A NOTICE
Below the temperature of 18.5 ° C, the product crystallizes, whereby
its properties are not changed.
PARAMETER
Substance name: DIMETHYLSULPHOXIDE (DMSO)
Species: purely for analysis
Chemical formula: C2H6OS
CAS number:
67-68-5
EC number: 200-664-3
Synonyms: DMSO
Form: liquid
Color:
colorless
Odor : sulphur
pH value: not applicable
melting point
: 18.5°C
Boiling point: 189°C
Flash point: 87°C
(closed crucible)
Flammability: combustible product (when hot)
explosive limits
: lower - 2.6% (V); upper - 28.5% (V)
Vapor pressure: 0.556 hPa at
20°C; 4hPa at 50°C; 20 hPa at 80°C; 49 hPa at 100 °C
Vapor density: 3.48 kg/m3
Relative vapor density: 2.7 (air = 1)
Density (20°C): 1104 kg/m3
Relative density (20 °C): 1.104 (water = 1)
water solubility:
completely soluble at 20 °C; > 1000 g/l in organic solvents:
soluble in diethyl ether, alcohols, aromatic hydrocarbons
Partition coefficient (n-octanol / water): logKow: -1.35
temperature
Auto-ignition: 300-302°C
Thermal decomposition: above 190 °C
viscosity
dynamic (20 °C): 2.14 mPa * s
Explosive properties: not applicable
Oxidizing properties: not applicable
Surface tension (20 °C):
43.5 mN/m pKa: 35.1
Henry's constant: 868E-06 Pa * m3 (The substance is not
volatile)
Refractive index absolute (20°C): 1.4785
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