34869-M

Dimethyl sulfoxide

suitable for HPLC, ≥99.7%

• Synonym(s): DMSO
• Linear Formula: (CH₃)₂SO
• CAS Number: 67-68-5
• Molecular Weight: 78.13
• Beilstein: 506008
• EC Number: 200-664-3
• MDL number: MFCD00002089
• UNSPSC Code: 12190000
• PubChem Substance ID: 329755076
• NACRES: NA.21

Properties

• 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
• technique(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.)
• 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

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
This product will be phased out towards early 2019. There is a replacement product available : 34869

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Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): 188.6 °F - closed cup
• Flash Point(C): 87 °C - closed cup