W387509

Dimethyl sulfoxide

≥99%

• Synonym(s): DMSO
• Linear Formula: (CH₃)₂SO
• CAS Number: 67-68-5
• Molecular Weight: 78.13
• FEMA Number: 3875
• Beilstein/REAXYS Number: 506008
• EC Number: 200-664-3
• MDL number: MFCD00002089
• UNSPSC Code: 12191502
• PubChem Substance ID: 24901911
• Flavis number: 12.175

Properties

• biological source: synthetic
• grade: Halal
• agency: meets purity specifications of JECFA
• vapor density: 2.7 (vs air)
• vapor pressure: 0.42 mmHg ( 20 °C)
• assay: ≥99%
• autoignition temp.: 573 °F
• shelf life: Expiration date period - 5 years
• expl. lim.: 42 %, 63 °F
• color: colorless
• refractive index: n20/D 1.479 (lit.)
• bp: 189 °C (lit.); 189 °C
• mp: 16-19 °C (lit.)
• solubility: water: miscible
• density: 1.10 g/mL (lit.)
• application(s): flavors and fragrances
• documentation: see Safety & Documentation for available documents
• food allergen: no known allergens
• organoleptic: butter; sulfurous
• 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 hygroscopic, high polarity amphiphilic solvent with an ability to dissolve many compounds. Cytotoxic study of DMSO on the pulp tissue repair-related activity of odontoblast-like cells showed it produced minor effects. Along with phosphorus pentaoxide it participates in the oxidation of carbohydrates to afford aldosuloses and aldosiduloses. DMSO participates in the oxidation of some partially-acetylated carbohydrates followed by elimination to afford unsaturated, derivatives. Solubility of amylose and amylopectin in DMSO has been evaluated.

Application

DMSO has been used to prepare the DMSO-phosphate buffer solution, which was used to dissolve the selective ET_B (ET = endothelin) receptor antagonist in a study. It has been used for the preparation of nysatin solution.

Dimethyl sulfoxide may be used in the synthesis of the following:

• α, β−Unsaturated carbonyl sugar derivatives.
• Conversion of secondary bromides or olefins to bromohydrin.
• Synthesis of α-hydroxycarbonyls from corresponding ketones.

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.

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 188.6 °F - closed cup
• flash_point_c: 87 °C - closed cup
• ppe: Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)