Properties and uses of DMSO Dimethyl Sulfoxide/Methyl sulfoxide CAS 67-68-5
Dimethyl Sulfoxide DMSO is a colorless, odorless, hygroscopic liquid with high polarity. It has a boiling point of 189°C and a freezing point of 18.45°C, staying liquid at room temperature for easy handling. It is miscible with water, alcohols, ethers and most organic solvents, earning it the title of the King of Industrial Solvents. Pharmaceutical-grade DMSO has a purity of ≥99.9%, while industrial-grade variants typically reach 99.0% purity, meeting different application requirements.
| Property | Specification |
|---|---|
| Chemical Name | Dimethyl Sulfoxide |
| CAS Number | 67-68-5 |
| Formula | C₂H₆OS or (CH₃)₂SO |
| Molecular Weight | 78.13 g/mol |
| Appearance | Colorless, clear liquid |
| Odor | Characteristic garlic-like |
| State at 20°C | Liquid |
| Boiling Point | 189°C (372°F) |
| Melting Point | 18.5°C (65.3°F) |
| Density (20°C) | 1.1004 g/mL |
| Refractive Index | 1.479 |
| Viscosity (20°C) | 2.0 cP |
DMSO Dimethyl Sulfoxide/Methyl sulfoxide - uses
One of the main industrial applications of DMSO is as a solvent for the extraction of aromatic hydrocarbons. It is also used as a reaction medium for resins and dyes, and as a solvent for the polymerization and spinning of acrylic fibers.
In addition to its use as a solvent, dimethyl sulfoxide solution also has many other industrial applications. It can be used as an organic synthesis intermediate and as a reaction medium for various chemical processes. Its high selective extraction ability makes it an ideal solvent for the polymerization and condensation of acrylic and polysulfone resins. It is also used as a spinning solvent for polyacrylonitrile and acetate fibers, and as an extraction solvent for the separation of alkanes and aromatics.
DMSO is also widely used in the production of dyes, pharmaceuticals, and other industrial products. Its carrier properties make it an effective pesticide additive, helping to improve the efficacy of certain pesticides by allowing them to penetrate more deeply into plants.
In addition to its many industrial applications, DMSO 99.9% also has several analytical uses. It can be used as an analytical reagent and as a stationary liquid in gas chromatography. It is also commonly used as a solvent in ultraviolet spectrum analysis.
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