This product is a highly polar organic solvent, which can be mixed with water in any proportion, and can dissolve general organic solvents except petroleum ether. At 20°C, it can absorb 30 (weight) of hydrogen chloride, 30 (weight) of nitrogen dioxide and 65 (weight) of sulfur dioxide.
It has strong hygroscopicity. At 20°C, when the relative humidity is 60, it can absorb 70% of its own weight from the air. The product is a weak oxidizing agent, and dimethyl sulfoxide without water is non-corrosive to metals. When it contains water, it is corrosive to metals such as iron and copper, but it is not corrosive to aluminum. It is stable to alkali.