for molecular biology
2.7 (vs air)
0.42 mmHg ( 20 °C)
Recommended retest period - 2 years
42 %, 63 °F
DNA sequencing: suitable
≤0.001 meq/g Titratable acid
≤0.1% water (Karl Fischer)
n20/D 1.479 (lit.)
189 °C (lit.)
16-19 °C (lit.)
H2O: miscible (completely)
1.10 g/mL (lit.)
suitable for molecular biology
DNase and RNase, none detected
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The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.
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.
DMSO is not dissolved in any solvent. It is a pure chemical compound that is a liquid at room temperature.
DMSO is known to have been isolated from tree bark in the past. It is now a commericially synthesized solvent.
DMSO has been used to oxidize thiols and disulfides to sulfonic acids, hydrolysis of epoxides, thioalkylation of phenols, and oxidation of primary alcohols and halides, and esters of primary alcohols to aldehydes.
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
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.
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
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.
No, this product is not considered sterile. Product Nos. D2560 and D2438 are sterile-filtered.