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34869 Sigma-Aldrich

Dimethyl sulfoxide

for HPLC, ≥99.7%

Synonym: DMSO

  • CAS Number 67-68-5

  • Linear Formula (CH3)2SO

  • Molecular Weight 78.13

  •  Beilstein/REAXYS Number 506008

  •  EC Number 200-664-3

  •  MDL number MFCD00002089

  •  PubChem Substance ID 329755076

  •  NACRES NA.21

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Properties

Related Categories β-Glucuronidase Drug Analysis Bundle, Amber Glass Bottles, Analytical Reagents, Analytical and Industrial Enzymes, Analytical/Chromatography,
Quality Level   100
grade   for HPLC
vapor density   2.7 (vs air)
vapor pressure   0.42 mmHg ( 20 °C)
assay   ≥99.7%
form   liquid
autoignition temp.   573 °F
expl. lim.   42 %, 63 °F
application(s)   HPLC: suitable
impurities   ≤0.002% non-volatile matter
  ≤0.2% water (Karl Fischer)
transmittance   270 nm, ≥20%
  280 nm, ≥50%
  300 nm, ≥80%
  350 nm, ≥98%
refractive index   n20/D 1.479 (lit.)
bp   189 °C (lit.)
mp   16-19 °C (lit.)
density   1.10 g/mL (lit.)
Featured Industry   Food and Beverages
SMILES string   CS(C)=O
InChI   1S/C2H6OS/c1-4(2)3/h1-2H3
InChI key   IAZDPXIOMUYVGZ-UHFFFAOYSA-N

Description

General description

Dimethyl sulfoxide (DMSO) is a polar organic solvent. DMSO activated by various electrophiles (oxalyl chloride) has been used to oxidize various alcohols (primary, secondary, allylic, benzylic, hindered and bicyclic). Carbonyl compounds are formed as reaction products. Due to its higher stability, it has been proposed as an alternate solvent for methyl cellosolve for use in ninhydrin reaction.

Application

Suitable for HPLC, spectrophotometry, environmental testing

Packaging

1, 6×1, 2, 4×2, 4×4 L in glass bottle

20 L in Nowpak™

100, 12×100, 500 mL in glass bottle

50 L in composite drum

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

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

Important notice
• The article number 34869-4X2.5L will be discontinued. Please order the single bottle 34869-2.5L which is physically identical with the same exact specifications.
• The article number 34869-6X1L will be discontinued. Please order the single bottle 34869-1L which is physically identical with the same exact specifications.

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Safety & Documentation

Safety Information

WGK Germany 
WGK 1
RTECS 
PV6210000
Flash Point(F) 
188.6 °F - closed cup
Flash Point(C) 
87 °C - closed cup

Documents

Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number

Frequently Asked Questions

What is the molarity of DMSO?
DMSO will have a molarity of 14.1M, based on a density of 1.1 g/mL and a molecular weight of 78.13 g/mol.
What is the DMSO dissolved in?
DMSO is not dissolved in any solvent. It is a pure chemical compound that is a liquid at room temperature.
Where does DMSO come from?
DMSO is known to have been isolated from tree bark in the past. It is now a commericially synthesized solvent.
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
Dimethyl sulfoxide (DMSO) should be a liquid. Why did it arrive as a solid?
DMSO supercools easily, and re-melts slowly at room temperature. The melting point is 16-19 °C. The solidified product can be re-liquefied by warming to room temperature without detriment to the product.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
Is Dimethyl sulfoxide a sterile product?
No, this product is not considered sterile.Product Nos. D2560 and D2438 are sterile-filtered.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
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Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Peer-Reviewed Papers
15

References

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