When it comes to Fourier Transform Infrared (FTIR) spectroscopy, choosing the right solvent is crucial.
The best solvent depends on the nature of your sample and the specific application you have in mind.
Some commonly used solvents for FTIR analysis include moisture-free chloroform, carbon tetrachloride, cyclohexane, and acetone.
These solvents are non-aqueous and can be used to dissolve solid samples for analysis.
For samples that require higher boiling point solvents, such as water or polar solvents like dimethylformamide (DMF) or dimethyl sulfoxide (DMSO), additional evaporation techniques may be necessary.
Rotary evaporation and centrifugal evaporation can be used to evaporate high boiling solvents like water.
However, these methods are often a last resort due to the tendency of these solvents to "bump" or boil uncontrollably.
In some specific applications, such as in the extraction of cannabis compounds, ethanol is emerging as a popular solvent.
Ethanol is safe for infused edibles and compatible with any type of container.
It can be used to extract both water-soluble and oil-soluble components from the plant material.
After extraction, a rotary evaporator can be used to separate the extract from the ethanol, resulting in a solvent-free extract.
When choosing a lab evaporator for solvent evaporation, it is important to consider the balance between sample heat sensitivity and solvent volatility.
A water-free and oil-free diaphragm vacuum pump with a low ultimate vacuum is recommended for distilling high-boiling point solvents.
A vacuum controller can help maintain the vacuum level.
A sealing ring made of PTFE material can provide high corrosion resistance.
Additionally, a cooling circulation system should be in place to ensure efficient solvent recovery and maintain a safe laboratory environment.
Overall, the best solvent for FTIR analysis depends on the specific requirements of the sample and the application.
It is important to choose a solvent that is compatible with the sample and the analysis technique.
Consider factors such as boiling point, solubility, and volatility when making your choice.
Continue exploring, consult our experts
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