Table 1. Solubility and Critical Gelation Concentrations of trans-SG1, -SG2, and -SG3 in Different Solvents.
trans isomersa | water | ethanol | tetrahydrofuran | chloroform | 1,4- dioxane | toluene | p-xylene | cyclohexane | hexane | 1,4-dimethylcyclohexane | cyclooctane | octane |
---|---|---|---|---|---|---|---|---|---|---|---|---|
SG1 | 1.0 | s | 3.0 | s | 2.5 | 1.3 | 1.3 | i | i | i | 2.0 | i |
SG2 | 2.5 | s | 7.5 | s | 5.0 | 5.0 | 7.5 | i | i | i | 7.5 | i |
SG3 | i | gp | gp | 1.8 | gp | 1.0 | 2.0 | i | i | gp | 1.8 | i |
Solubilities are given in units of mg/mL. Abbreviations: i, insoluble during heating; s, soluble at room temperature; gp, gel-like precipitate.