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900645

Sigma-Aldrich

Dimethyl sulfoxide

anhydrous, ZerO2®, ≥99.9%

Synonym(s):

Degassed and low oxygen dimethyl sulfoxide, Dimethyl sulfoxide ZerO2®, DMSO

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About This Item

Linear Formula:
(CH3)2SO
CAS Number:
Molecular Weight:
78.13
Beilstein/REAXYS Number:
506008
EC Number:
MDL number:
UNSPSC Code:
12191502
NACRES:
NA.21

grade

ZerO2®

Quality Level

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

assay

≥99.9%

form

liquid

autoignition temp.

573 °F

quality

anhydrous

expl. lim.

42 %, 63 °F

impurities

≤0.005% water
water

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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Application

ZerO2 products are rigorously degassed with highly pure inert gas providing solvents and solutions (anhydrous if specified) with very low residual oxygen content.

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

ZerO2 is a registered trademark of Sigma-Aldrich Co. LLC

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

188.6 °F - closed cup

flash_point_c

87 °C - closed cup


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A solid and bench-stable alternative to sulfuryl fluoride gas has been developed, 4-(Acetylamino)phenyl]imidodisulfuryl difluoride (ASIF). ASIF is a shelf-stable, crystallilne reagent for the installation of the valuable SO2F functional group.

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