Dimethyl sulfoxide is a common skin penetrant

01 What is dimethyl sulfoxide?
Dimethyl sulfoxide is a sulfur-containing organic compound, the molecular formula is C2H6OS, at room temperature is colorless odorless transparent liquid, is a hygroscopic flammable liquid.
Dimethyl sulfoxide has high polarity, high boiling point, good thermal stability, aprotic, miscible with water characteristics, can dissolve in ethanol, propanol, benzene and chloroform and other most organic matter, known as “universal solvent”.
Dimethylsulfoxide reacts with water to form dimethylamine and sulfur dioxide in the presence of acid.
Dimethyl sulfoxide is widely used in aromatics extraction, resin and dye reaction medium, acrylic fiber polymerization, drawing solvent, and can also be used as an organic solvent, reaction medium and organic synthesis intermediate. In addition, dimethyl sulfoxide can also be used as an analytical reagent and a stationary liquid for gas chromatography.

02 dimethyl sulfoxide is used in some fields?
Dimethyl sulfoxide is a high polarity, high boiling point, good thermal stability of organic compounds, has a wide range of uses, the following are some of the main areas:
Organic synthesis and pharmaceutical synthesis: dimethyl sulfoxide is a commonly used organic solvent and reaction medium, which can be used in various organic synthesis and pharmaceutical synthesis reactions. For example, in the field of medicine, DSO can be used to prepare drug intermediates or as drug carriers, such as certain local anesthetics, anti-cancer drugs and antiviral drugs.
Electronics and semiconductor industry: DSO is characterized by high purity and low volatility and can be used to clean electronic components and semiconductor devices. For example, in the semiconductor manufacturing process, DSO can be used as a cleaning agent and a solvent to remove photoresist.
Polymers and plastics industry: DSO can be used as a solvent and processing aid for polymers and plastics. For example, dimethyl sulfoxide is a common solvent used in the polymerization of polyacrylonitrile and acetate fibers.
Agriculture and environmental protection: dimethyl sulfoxide can be used as an additive to pesticides, which helps to improve the permeability and absorption of pesticides and improve their efficacy. In addition, DSO can be used to recover acetylene and sulfur dioxide from exhaust gases.
Other fields: dimethyl sulfoxide can also be used as dyes, stain remover, dyeing carrier, synthetic fiber modifier, antifreeze, capacitive media, brake oil and so on.
It should be noted that although dimethyl sulfoxide has a wide range of uses, it needs to pay attention to its toxicity and irritation during use, and avoid long-term exposure and high concentration use. At the same time, appropriate solvents and methods need to be selected according to the specific application scenarios and material properties.
03 dimethyl sulfoxide can crystallize at what temperature?
Dso crystallizes at low temperatures, and its crystallization temperature varies with ambient temperature, air humidity, and the mass of DSO. In general, when the temperature is below 18 ° C, DSO may begin to crystallize. The lower the temperature, the more easily dimethyl sulfoxide crystallizes. In addition, if there are impurities or moisture in the DSO, it may also lead to crystallization.
Once DSO begins to crystallize, it forms a transparent crystal, but the crystal may gradually turn yellow or dark over time. This change may be caused by the reaction of impurities in DSO or oxygen in the air with DSO.
When using DSO, it should be avoided to expose it to high temperature or light conditions for a long time, as these factors may cause the polymerization reaction and deterioration of DSO. At the same time, attention should be paid to avoid reactions with other substances during use to ensure the purity and quality of dimethyl sulfoxide.
04 Dimethyl sulfoxide why is called skin penetrant?
Dimethyl sulfoxide is a kind of organic compound with high polarity, high boiling point and good thermal stability, so it has certain application value in skin penetration.
First, dimethyl sulfoxide has a high polarity and can form hydrogen bonds with many organic compounds. This polarity allows DSO to dissolve substances that cannot be dissolved by other solvents, such as oils, waxes, and resins.
Secondly, dimethyl sulfoxide has a high boiling point and thermal stability. This allows it to evaporate at high temperatures and does not break down or deteriorate during evaporation. Therefore, dimethyl sulfoxide can be used to make some efficient and rapid skin penetrants.
Finally, dimethyl sulfoxide has a certain ability to penetrate the skin. It can effectively penetrate the stratum corneum, allowing substances inside the skin to penetrate to the outside of the skin, thus playing a therapeutic or absorptive role.
Based on the above characteristics, dimethyl sulfoxide is regarded as one of the skin penetrants by some people. However, it should be noted that dimethyl sulfoxide has certain toxicity and irritation, and it is necessary to strictly control the concentration and use time during use to avoid harm to the human body.
05 Application of dimethyl sulfoxide in the field of medicine.
Dimethyl sulfoxide (DMSO) is widely used in the field of medicine, mainly including the following aspects:
Directly used as drug raw materials and carriers: DMSO itself has anti-inflammatory analgesic, diuretic, sedative and other effects, often as an active component of analgesic drugs added to drugs, can improve the metabolism of the affected area, can play a role in anti-edema to a certain extent, but also can slow down the conduction of peripheral nerves.
For the production of topical analgesics: DMSO can produce topical analgesics, such as Tonglixiao, paracetamol dimethyl sulfoxide, etc., which can effectively relieve pain with less side effects.
For the production of anti-tumor drugs: DMSO can be used as a solvent and carrier of anti-tumor drugs, such as cisplatin, carboplatin, etc. These drugs can effectively inhibit the growth and spread of tumors.
For the production of antipyretic and analgesic drugs: DMSO can produce antipyretic and analgesic drugs, such as aspirin, aminopyrine, etc. These drugs are effective in relieving symptoms such as fever and pain.
Used to make other drugs: DMSO can also make other drugs, such as vitamins, amino acids, etc. These drugs can supplement the body’s needed nutrients and regulate body functions.
06 Application of dimethyl sulfoxide in electronic semiconductor industry.
The application of dimethyl sulfoxide in the electronic semiconductor industry mainly has the following aspects:
Used for moisture and protection of chips. Because DMSO is highly permeable and protective, it can be used for moisture resistance and protection of chips. Coating DMSO on the surface of the chip can form a protective film to prevent the entry of water and pollutants, thereby improving the stability and reliability of the chip.
For chip cleaning and residue removal. Because DMSO can be mixed with water and other organic solvents, it can be used to clean chips and remove residues. Coating DMSO on the surface of the chip can remove residues and contaminants, while forming a protective film to prevent the entry of moisture and contaminants, thereby improving the stability and reliability of the chip.
Used for the encapsulation and connection of chips. Because DMSO is highly permeable and protective, it can be used for the packaging and connection of chips. Coating DMSO on the surface of the chip can form a protective film to prevent the entry of water and pollutants, thereby improving the stability and reliability of the chip. At the same time, DMSO can also be used to connect chips and other components to improve the stability and reliability of connections.
It should be noted that the application of DMSO in the electronic semiconductor industry requires strict control of the concentration and use time to avoid harm to the human body. At the same time, DMSO has decomposition phenomenon at high temperature, and can react violently when encountering chlorine, burning in the air and emitting a light blue flame. Therefore, it is necessary to strictly control the temperature and avoid contact with the fire source during use.
07 Dimethyl sulfoxide (DMSO) is known as a “universal solvent”?
Dimethyl sulfoxide (DMSO) is known as a “universal solvent” because of its molecular structure, which can solvent many different kinds of compounds, including organic compounds, inorganic compounds, polymers, biomolecules, etc.
Specifically, dimethyl sulfoxide can dissolve the following types of compounds:
Polar compounds: dimethyl sulfoxide can dissolve some of the more polar compounds, such as alcohols, carboxylic acids, phenols, etc.
Non-polar compounds: dimethyl sulfoxide can also dissolve some non-polar compounds, such as hydrocarbons, halogenated hydrocarbons, etc. Therefore, dimethyl sulfoxide is widely used in chemistry, biology, medicine and other fields, and is known as “universal solvent”.