
Dibutyltin dilaurate (DBTDL) is an organotin additive, MF: C32H64O4Sn, MW: 631.56. It is typically produced by esterification of dibutyltin oxide with lauric acid under specific conditions. At room temperature, it appears as a pale yellow or colorless oily liquid, solidifying into white crystals at low temperatures. The Sn-O bond in its molecule exhibits high reactivity, enabling it to catalyze ester exchange and condensation reactions, forming the chemical foundation for its core applications.
| Items | Specifications |
| Boiling Point | >204°C/12mm |
| Melting Point | 22–24°C |
| Density | 1.066 g/mL at 25°C (lit.) |
| Vapor pressure | 0.2 mmHg (160°C) |
| Refractive index | n20/D 1.471 (lit.) |
| Flash point | >230°F |
| Specific Gravity | 1.066 |
| Freezing Point | 8°C |
| Solubility | Insoluble in water; soluble in ethanol, diethyl ether, benzene, toluene, petroleum ether, and most organic solvents; compatible with most plasticizers and resin materials. |
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