Dimethyl Sulfoxide (DMSO) is a sulfur-containing organic compound with the chemical formula (CH₃)₂SO. At room temperature, it appears as a colorless and transparent liquid with high polarity, high boiling point, and excellent solvency. High-purity Dimethyl Sulfoxide CAS 67-68-5 (≥99.9%) is widely used in the chemical, pharmaceutical, and electronics industries as a powerful solvent and reaction medium. Because of its strong dissolving ability and chemical stability, DMSO solvent has become an essential material in many industrial production processes.
Chemical Properties of Dimethyl Sulfoxide
The molecular structure of dimethyl sulfoxide (DMSO) contains a sulfur atom bonded to two methyl groups and one oxygen atom, forming a highly polar C–S–O bond. This structure allows DMSO solvent to dissolve both polar compounds (such as salts and sugars) and some non-polar compounds (such as aromatic hydrocarbons). Because of this unique property, DMSO is often referred to as a "universal solvent."
Another key characteristic is its high boiling point of 189°C and low freezing point of -62°C, which allows dimethyl sulfoxide solvent to remain stable and liquid across a wide temperature range. This stability makes it suitable for chemical reactions, extraction processes, and industrial solvent applications where temperature resistance is required.
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Industrial Applications of Dimethyl Sulfoxide
High-purity Dimethyl Sulfoxide (DMSO) 99.9% is mainly used in several major industrial fields:
Chemical Industry
In chemical manufacturing, DMSO in organic chemistry is widely used as a reaction solvent and reaction medium. For example, it is used in the production of polyacrylonitrile fibers and other polymer materials due to its excellent dissolving ability and thermal stability.
Pharmaceutical Industry
In pharmaceutical manufacturing, dimethyl sulfoxide used for drug synthesis and extraction is very common. It can help extract alkaloids and natural active ingredients from plants and is also used as a solvent during API synthesis and pharmaceutical intermediates production.
Electronics Industry
In the electronics field, DMSO solvent uses include precision cleaning and degreasing of electronic components. Its low surface tension allows it to penetrate tiny gaps and remove contaminants from delicate equipment.
High-purity DMSO chemical solvent helps reduce impurities during reactions, improving reaction efficiency, product yield, and final product quality.
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Storage and Safety Guidelines
When handling dimethyl sulfoxide solvent, it should be used in a well-ventilated environment to avoid prolonged exposure to vapors. Operators should wear protective gloves and safety goggles to prevent skin contact or accidental splashing.
For storage, DMSO CAS 67-68-5 should be kept in a sealed container in a cool and dry place, away from strong oxidizing agents and ignition sources. In industrial processes such as solvent extraction, DMSO is often mixed with water or other organic solvents to optimize dissolution performance and process efficiency.
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