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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:
67-68-5
Molecular Weight:
78.13
EC Number:
200-664-3
UNSPSC Code:
12191502
PubChem Substance ID:
57648266
Beilstein/REAXYS Number:
506008
MDL number:
MFCD00002089
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

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, 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
View returnable container options.

Other Notes

2024 CiteAb Award Winner for Supplier Succeeding in Parkinson′s Research
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 (personal protective equipment)

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Group 4: Flammable liquids + Type 3 petroleums + Hazardous rank III + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

276855-VAR: + 276855-1L: + 276855-900ML: + 276855-20L-P2: + 276855-2L: + 276855-250ML: + 276855-200L: + 276855-4X2L: + 276855-BULK: + 6264770000: + 276855-PZ: + 276855-100ML: + 276855-8L: + 276855-18L: + 276855-18L-P1: + 276855-12X100ML: + 276855-6X1L:

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