Merck
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01934

Supelco

Dimethyl sulfoxide

for inorganic trace analysis, ≥99.99995% (metals basis)

Synonym(s):
DMSO
Linear Formula:
(CH3)2SO
CAS Number:
Molecular Weight:
78.13
Beilstein:
506008
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24

grade

for inorganic trace analysis

Quality Level

vapor density

2.7 (vs air)
2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)
0.42 mmHg

assay

≥99.9% (GC)
≥99.99995% (metals basis)

form

liquid

autoignition temp.

573 °F

expl. lim.

42 %, 63 °F
42 %

color

colorless

refractive index

n20/D 1.479 (lit.)

bp

189 °C (lit.)
189 °C

mp

16-19 °C (lit.)
16-19 °C

solubility

H2O: miscible (completely)

density

1.099-1.101 g/mL at 20 °C
1.10 g/mL (lit.)

cation traces

Ag: ≤0.5 μg/kg
Al: ≤1 μg/kg
As: ≤0.01 mg/kg
Au: ≤0.5 μg/kg
Be: ≤0.5 μg/kg
Bi: ≤0.5 μg/kg
Ca: ≤20 μg/kg
Cd: ≤0.5 μg/kg
Ce: ≤0.5 μg/kg
Co: ≤0.5 μg/kg
Cr: ≤5 μg/kg
Cs: ≤0.5 μg/kg
Cu: ≤5 μg/kg
Fe: ≤20 μg/kg
Ga: ≤0.5 μg/kg
Ge: ≤0.5 μg/kg
Hg: ≤5 μg/kg
In: ≤10 μg/kg
Ir: ≤0.5 μg/kg
K: ≤10 μg/kg
Li: ≤0.5 μg/kg
Mg: ≤10 μg/kg
Mn: ≤5 μg/kg
Mo: ≤0.5 μg/kg
Na: ≤50 μg/kg
Ni: ≤5 μg/kg
Os: ≤1 μg/kg
Pb: ≤0.5 μg/kg
Pd: ≤0.5 μg/kg
Pt: ≤0.5 μg/kg
Rb: ≤0.5 μg/kg
Rh: ≤0.5 μg/kg
Ru: ≤0.5 μg/kg
Sb: ≤0.5 μg/kg
Se: ≤0.01 mg/kg
Sn: ≤0.5 μg/kg
Sr: ≤0.5 μg/kg
Ti: ≤5 μg/kg
Tl: ≤0.5 μg/kg
U: ≤0.5 μg/kg
V: ≤0.5 μg/kg
Zn: ≤5 μg/kg
Zr: ≤0.5 μg/kg

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.

Other Notes

For information on dimethyl sulfoxide miscibility, please visit the following link:
Dimethyl Sulfoxide Miscibility/Immiscibility Table

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 Origin

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