Solubility curves (figure at right) are commonly used to illustrate the relationship between solubility, temperature, and solvent type. By plotting temperature vs. solubility, scientists create the framework needed to develop the desired crystallization process. Here, the solubility of the given material in Solvent A is high – meaning more material can be crystallized per unit mass of solvent. Solvent C has a low solubility at all temperatures, indicating it could be a useful anti-solvent for this material.
Once an appropriate solvent is chosen, the solubility curve becomes a critical tool for the development of an effective crystallization process. With this information, the starting concentration and temperature or anti-solvent ratio can be chosen, the theoretical yield can be calculated and the first important decisions regarding how the crystallization will be developed can be made.
Solubility curves (figure at right) are commonly used to illustrate the relationship between solubility, temperature, and solvent type. By plotting temperature vs. solubility, scientists create the framework needed to develop the desired crystallization process. Here, the solubility of the given material in Solvent A is high – meaning more material can be crystallized per unit mass of solvent. Solvent C has a low solubility at all temperatures, indicating it could be a useful anti-solvent for this material.Once an appropriate solvent is chosen, the solubility curve becomes a critical tool for the development of an effective crystallization process. With this information, the starting concentration and temperature or anti-solvent ratio can be chosen, the theoretical yield can be calculated and the first important decisions regarding how the crystallization will be developed can be made.
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