Dimethyl sulfoxide CAS# 67-68-5

Dimethyl sulfoxide, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: Colorless liquid.
  • Assay: 99. 9%min.
  • Packaging: 225kg/plastic drum.
  • Sample: Available.

Quality Control of Dimethyl sulfoxide

Chemical Structure
Dimethyl sulfoxide CAS# 67-68-5
Packing of Dimethyl sulfoxide

Description of Dimethyl sulfoxide

Dimethyl sulfoxide (DMSO) is an organosulfur compound with the formula (CH3)2SO. This colorless liquid is an important polar aprotic solvent that dissolves both polar and nonpolar compounds and is miscible in a wide range of organic solvents as well as water. It has a relatively high melting point. DMSO has the unusual property that many individuals perceive a garlic-like taste in the mouth after contact with the skin.

In terms of chemical structure, the molecule has idealized Cs symmetry. It has a trigonal pyramidal molecular geometry consistent with other three-coordinate S(IV) compounds, with a nonbonded electron pair on the approximately tetrahedral sulfur atom.

Basic Info of Dimethyl sulfoxide

Basic Info

Chemical Name

Dimethyl sulfoxide


Methane, sulfinylbis-;(Methylsulfinyl)methane;



Molecular Formula


Molecular Weight







Safety Info



Safety Statements


HS Code


WGK Germany


Risk Statements


Hazard Codes




Appearance & Physical State

colorless liquid



Boiling Point


Melting Point


Freezing Point


Flash Point


Refractive Index



Stable. Incompatible with a very wide range of materials, including acid chlorides, strong acids, strong oxidizing agents, strong reducing agents, phosphorus halides, moisture, copper wool + trichloroacetic acid. Reacts violently with a number of materials

Storage Condition

Store at RT.

Vapor Density

2.7 (vs air)

Vapor Pressure

0.42 mm Hg ( 20 °C)


Numbering system

MDL number



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What is Dimethyl sulfoxide?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Dimethyl sulfoxide which has developed particularly rapidly in recent years. Do you know about Dimethyl sulfoxide?
The official answer: Dimethyl sulfoxide (DMSO) is a sulfur-containing organic compound with the molecular formula C2H6OS, a colorless and odorless transparent liquid at room temperature, and a hygroscopic flammable liquid. It has the characteristics of high polarity, high boiling point, good thermal stability, non-protonic, miscible with water, soluble in most organic substances such as ethanol, propanol, benzene, and chloroform, etc. It is known as a “universal solvent”. When heated in the presence of an acid, a small amount of methyl mercaptan, formaldehyde, dimethyl sulfide, methanesulfonic acid, and other compounds will be produced. It decomposes at high temperatures, reacts violently with chlorine, and burns in air with a light blue flame. It can be used as an organic solvent, reaction medium, and organic synthesis intermediate. It can also be used as dyeing solvent of synthetic fiber, dyeing agent, dyeing carrier, and absorbent of recovering acetylene and sulfur dioxide.

What’s the application of Dimethyl sulfoxide?

DMSO is widely used as solvents and reaction reagents, especially in acrylonitrile polymerization reactions as processing solvents and drawing solvents, in polyurethane synthesis and drawing solvents, in polyamide, polyimide and polysulfone resin synthesis solvents, as well as aromatics, butadiene extraction solvents, and synthesis solvents for chlorofluoroaniline.

DMSO is dimethyl sulfoxide, which is widely used. It is used as a solvent for acetylene, aromatics, sulfur dioxide, and other gases as well as a solvent for spinning acrylic fiber. It is an extremely important nonprotonic polar solvent that is soluble in water and organic solvents. It has strong permeability to the skin and helps the penetration of drugs into the body. It can also be used as an additive for pesticides. It is also a very important chemical reagent.

DMSO is also an osmoprotective agent that lowers the cell freezing point, reduces the formation of ice crystals, mitigates free radical damage to cells, and alters the permeability of biological membranes to electrolytes, drugs, toxicants, and metabolites.

Methyl sulfoxide is an extremely important nonprotonic polar solvent that is soluble in both water and organic solvents. It is widely used as a solvent and reaction reagent with a high selective extraction capacity. Dimethyl Sulfoxide itself has anti-inflammatory and analgesic, diuretic, and sedative effects, and can be used directly as raw material and carrier for certain drugs in the pharmaceutical industry. It is known as a “cure-all” and is often added to drugs as an active component of painkillers.


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