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41647

Sigma-Aldrich

Dimethyl sulfoxide

puriss., absolute, over molecular sieve (H2O ≤0.005%), ≥99.5% (GC)

Synonym(s):

DMSO

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About This Item

Linear Formula:
(CH3)2SO
CAS Number:
67-68-5
Molecular Weight:
78.13
Beilstein/REAXYS Number:
506008
EC Number:
200-664-3
MDL number:
MFCD00002089
UNSPSC Code:
12191502
PubChem Substance ID:
57650053

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

grade

absolute
puriss.

assay

≥99.5% (GC)

autoignition temp.

573 °F

quality

over molecular sieve (H2O ≤0.005%)

expl. lim.

42 %, 63 °F

impurities

≤0.005% water
water

refractive index

n20/D 1.479 (lit.)
n20/D 1.479

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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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

This product has been replaced by 276855-Sigma-Aldrich | Dimethyl sulfoxide, anhydrous, ≥99.9% | (CH3)2SO

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

188.6 °F - closed cup

flash_point_c

87 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
STBF4299V
STBF4337V
STBF5126V
STBF6070V
STBF4463V

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