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276855

Dimethyl sulfoxide

anhydrous, ≥99.9%

Synonym(s):

DMSO

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About This Item

Linear Formula:
(CH3)2SO
CAS Number:
Molecular Weight:
78.13
EC Number:
200-664-3
UNSPSC Code:
12191502
PubChem Substance ID:
Beilstein/REAXYS Number:
506008
MDL number:
Assay:
≥99.9%
Grade:
anhydrous
Bp:
189 °C (lit.)
Vapor pressure:
0.42 mmHg ( 20 °C)
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grade

anhydrous

Quality Segment

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

assay

≥99.9%

form

liquid

autoignition temp.

573 °F

expl. lim.

42 %, 63 °F

impurities

<0.005% water

evapn. residue

<0.0005%

color

colorless

refractive index

n20/D 1.479 (lit.)

bp

189 °C (lit.)

mp

16-19 °C (lit.)

solubility

H2O: miscible (completely)

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

General description

Ouranhydrous solvents deliver exceptionally low water content, making them theideal choice for moisture-sensitive laboratory applications. Packaged in theexclusive Sure/Seal™ septum bottle system, they are reliably protected againstmoisture ingress from first use to last drop. The innovative Sure/Seal™ closurecombines an advanced plug-style liner with an airtight elastomer and crimp capdesign to ensure consistent product integrity. Three unique liner materialsprovide optimal chemical compatibility across a broad range of solvents.Sure/Seal™ packaging is proven to maintain anhydrous conditions even afterrepeated punctures. With more than 70 products across all major solventfamilies, available in pack sizes from 100 mL to 2 L, the portfolio meets virtuallyevery laboratory need. By choosing ready-to-use anhydrous solvents inSure/Seal™ packaging, researchers eliminate the need for time-consuming andhazardous in-house solvent drying and distillation - saving time, reducingrisk, and improving reproducibility.

Application

Anhydroussolvents in Sure/Seal™ packaging are essential wherever water contaminationwould compromise experimental results. They are widely used inmoisture-sensitive applications such as organic synthesis - including Grignardreactions, organometallic chemistry, and catalysis - as well as in peptide,oligonucleotide, and pharmaceutical synthesis.

Packaging

18 L, 200 L packaged in Pure-Pac® stainless steel containers; 100 mL, 250ml, 1 L, 2 L, 6×1 L packaged in Sure/Seal® bottles

Other Notes

For information on dimethyl sulfoxide miscibility, please visit the following link:
Dimethyl Sulfoxide Miscibility/Immiscibility Table
Pure-Pac® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.
The article number 276855-4X2L will be discontinued. Please order the single bottle 276855-2L which is physically identical with the same exact specifications.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC
Pure-Pac is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

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


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Storage Class

10 - Combustible liquids

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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