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)
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
n
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
Other Notes
For information on dimethyl sulfoxide miscibility, please visit the following link:
Dimethyl Sulfoxide Miscibility/Immiscibility Table
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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