[Chemical Knowledge]：How to get rid of dmso?

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DMSO (dimethyl sulfoxide) is an organic solvent, which is commonly used in the field of medicine, such as transdermal absorption, solvent extraction and low temperature protection. However, in the process of using DMSO, we also encounter many problems, such as how to remove DMSO contamination. The removal method of DMSO will be described in detail below.

1. the physicochemical properties of DMSO

DMSO molecular formula is C2H6SO, molecular weight is 78.13. It is a colorless transparent liquid with a bitter taste, a density of 1.1004 g/mL, and a boiling point of 189°C. DMSO has excellent solubility, can dissolve most organic matter, can also be water, ethanol, chloroform and dichloromethane and other organic solvents dissolved. In addition, DMSO can also promote drug molecules through the skin, so that it can be better absorbed.

of the hazards of

2. DMSO Although DMSO has a good role in promoting transdermal absorption of drugs, it also affects the body. DMSO itself is toxic and poses a threat to humans, animals and the environment. In the process of using DMSO, we need to prevent it from causing harm to the human body and polluting the environment.

3. methods to remove DMSO

1. handwashing

in the process of using DMSO, we often need to directly contact it. In order to prevent the adverse effects of DMSO on the human body, the best way is to remove DMSO as soon as possible. In the case of direct contact with DMSO without the use of hands, we can immediately wash our hands with soap and hand sanitizer. If the hands come into direct contact with DMSO, they must be washed immediately.

2.
with Absorbent
DMSO is dissolved in an organic solvent (e. g., chloroform), and the DMSO can be removed by using an absorbent. Commonly used absorbents include activated carbon, silica gel and montmorillonite, which can quickly absorb DMSO so that it is no longer harmful to the environment. Before absorption, pay attention to wear protective equipment to avoid damage to the human body.

3. Evaporation

DMSO is dissolved in water and can be removed by evaporation. The DMSO aqueous solution is evaporated in a ventilated environment and allowed to evaporate slowly to remove DMSO. Before evaporation, it is recommended to heat the solution to the boiling point to increase the evaporation rate. In the process of evaporation, it is necessary to ensure sufficient ventilation, otherwise it may cause certain hazards.

4. Oxidation

When DMSO is in contact with air, an oxidation reaction may occur to generate secondary pollutants such as dimethyl sulfide, sulfurous acid, and sulfuric acid. Therefore, the oxidation method cannot be used directly to remove DMSO. In practice, however, oxidizing agents or high temperature oxidation can be used to degrade residual DMSO. Before oxidation, it is recommended to choose the correct oxidant or conditions, and pay attention to safety to avoid secondary pollution.