Review Article
Tin-Catalyzed Esterification and Transesterification Reactions: A Review
Table 9
Degree of solubility of typical organotin(IV) catalysts applied in the transesterification reactions [
12].
| Organotin catalyst | Solubility (g·mL−1) at 40°C | Solubility (g·mL−1) at 100°C | Methyl alcohol | Soybean oil | FAMEs | Methyl alcohol | Soybean oil | FAMEs |
| dibutyltin dilaurate (DBTDL) | 0.02 | 0.02 | Soluble | — | Soluble | Soluble | di-n-butyl-oxo-stannane (DBTO) | Insoluble | Insoluble | <0.01 | — | 0.10 | 0.15 | Butylstannoic acid (BTA) | Insoluble | Insoluble | <0.01 | — | 0.03 | 0.04 |
|
|
aDetection limit was 0.01 g·mL−1.
|