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V800164

Sigma-Aldrich

Dimethyl sulfoxide

AR, ≥99.5%

Synonym(s):

DMSO

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About This Item

Linear Formula:
(CH3)2SO
CAS Number:
67-68-5
Molecular Weight:
78.13
Beilstein:
506008
EC Number:
200-664-3
MDL number:
MFCD00002089
UNSPSC Code:
12191502
PubChem Substance ID:
329829211

grade

AR

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

product line

Vetec™

Assay

≥99.5%

form

liquid

autoignition temp.

573 °F

expl. lim.

42 %, 63 °F

refractive index

n20/D 1.479 (lit.)

bp

189 °C (lit.)

mp

16-19 °C (lit.)

density

1.10 g/mL (lit.)

SMILES string

CS(C)=O

InChI

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

InChI key

IAZDPXIOMUYVGZ-UHFFFAOYSA-N

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General description

Dimethyl sulfoxide (DMSO) is a high-boiling polar aprotic solvent and mild oxidant used in organic synthesis. DMSO can also act as a one-carbon synthon in organic chemistry. It is a source of -Me, -SMe, -SO2Me functional groups. It is also used as a versatile reagent in Pfitzner-Moffatt oxidation, Swern oxidation, and Corey-Chaykovsky reaction.

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.

Legal Information

Vetec is a 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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Dimethyl sulfoxide as a synthon in organic chemistry
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