Merck
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5.43900

Supelco

Dimethyl sulfoxide

for liquid chromatography LiChrosolv®

Synonym(s):
Methanesulfinylmethane, Methyl sulfoxide, Dimethyl(oxido)sulfur, DMSO, DMSO
Linear Formula:
(CH3)2SO
CAS Number:
Molecular Weight:
78.13
Beilstein:
506008
MDL number:
EC Index Number:
200-664-3

vapor density

2.7 (vs air)

Quality Level

vapor pressure

0.42 mmHg ( 20 °C)

product line

LiChrosolv®

grade

isocratic

assay

≥99.7% (GC)

form

liquid

autoignition temp.

573 °F

expl. lim.

42 %, 63 °F

technique(s)

HPLC: suitable

impurities

≤0.2% Water

evapn. residue

≤0.002%

transmittance

270 nm, ≥30%
280 nm, ≥60%
300 nm, ≥75%
350 nm, ≥99%

refractive index

n20/D 1.479 (lit.)

kinematic viscosity

2.14 cSt

bp

189 °C (lit.)

mp

16-19 °C (lit.)

transition temp

flash point 87 °C

density

1.10 g/mL (lit.)

storage temp.

2-30°C

SMILES string

CS(C)=O

InChI

1S/C2H6OS/c1-4(2)3/h1-2H3

InChI key

IAZDPXIOMUYVGZ-UHFFFAOYSA-N

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Caution

Supercools easily and remelts slowly at room temperature. Solidified product can be re-liquified by warming to room temperature without detriment to the product.

Specifications

Saturation Concentration in Air: 8.0 g/m3 (20 °C)

Preparation Note

Product filtered through a 0.5 μm filter

Analysis Note

Purity (GC): ≥ 99.7 %
Water: ≤ 0.2 %
Evaporation residue: ≤ 0.002 %
Transmission (at 270 nm): ≥ 30 %
Transmission (at 280 nm): ≥ 60 %
Transmission (at 300 nm): ≥ 75 %
Transmission (from 350 nm): ≥ 99 %

Legal Information

LICHROSOLV is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

188.6 °F - closed cup

Flash Point(C)

87 °C - closed cup

Certificate of Analysis

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Certificate of Quality

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