Prediction of Solubility using Organic solvents

In summary, it is possible to predict which solvent will be successful in removing a stain based on the theoretical consideration of the formula of the stain and the material. This can be done by finding a solvent with a suitable polarity index from a list of solvents in an LC handbook, as like dissolves like.
  • #1
boblalux
2
0
Whenever I have a stain (paint, glue etc), I attempt removing it after the following scheme (if unsuccessful, I proceed to the next solvent):
Water, soapy water, alcohol, white spirit, acetone.

My question is...
Is it possible to chemically PREDICT which solvent will be succesqsful on which material/stain?
 
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  • #2
If you know what the stain is and what the material is - sure.
 
  • #3
What I actually mean, is it possible on the basis of theoretical consideration of the formula of any organic substance, to find whether it is soluble in an organic solvent.
 
  • #4
boblalux said:
What I actually mean, is it possible on the basis of theoretical consideration of the formula of any organic substance, to find whether it is soluble in an organic solvent.

Yes. Since like dissolves like. Any LC handbook will have a list of solvents with a polarity index. If you know what the stain is (polar vs. non-polar), then you can find a solvent with a suitable polarity from the list of solvents.
 

1. What is the significance of predicting solubility using organic solvents?

Predicting solubility using organic solvents is important in various industries such as pharmaceuticals, food and beverage, and cosmetics. It helps in determining the solubility of a substance in a particular solvent, which is crucial in the development of new products and formulations.

2. How is solubility predicted using organic solvents?

Solubility can be predicted using a variety of methods, including quantitative structure-property relationship (QSPR) models, experimental data analysis, and molecular dynamics simulations. These methods use various parameters such as molecular structure, functional groups, and physical properties of solvents to estimate the solubility of a substance in a specific solvent.

3. What factors influence the solubility of a substance in organic solvents?

The solubility of a substance in organic solvents is influenced by several factors, including the nature of the substance, the type and concentration of solvent, temperature, and pressure. Other factors such as pH, ionic strength, and the presence of other solutes can also affect solubility.

4. Can solubility be accurately predicted using organic solvents?

While predicting solubility using organic solvents is a complex process, it has been shown to be accurate for many substances. However, the accuracy of the prediction depends on the method used and the availability of experimental data. Further research and development are needed to improve the accuracy of solubility predictions.

5. What are the limitations of predicting solubility using organic solvents?

There are several limitations to predicting solubility using organic solvents, including the complexity of solubility processes, the lack of experimental data, and the difficulty in accurately representing the interactions between solutes and solvents. Additionally, the accuracy of predictions can be affected by factors such as temperature, pressure, and the presence of impurities in the solvent or substance.

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