Overview
Dibutyltin dilaurate ( CAS 77-58-7 ), commonly abbreviated as DBTL and sold under trade names including Davainex and Tinostat, is an organotin compound used industrially as a catalyst and stabilizer.
It accelerates curing and crosslinking reactions in polymer systems while also providing thermal and oxidative stabilization during processing. In polyurethane manufacturing, DBTL catalyzes the isocyanate-hydroxyl reaction.
This process controls foam rise and gel times in flexible and rigid foam production. Silicone sealant and RTV formulations rely on it to achieve consistent cure rates at room temperature.
This makes it a standard catalyst choice for construction and automotive sealants. PVC compounders use it as a heat stabilizer to prevent degradation during extrusion and calendering of flexible profiles.
It is also utilized for films and wire coatings. In lubricant and metalworking fluid formulations, it functions as an antioxidant additive to extend fluid service life under high-temperature operating conditions.
Dibutyltin dilaurate is supplied as a pale yellow to amber liquid. Technical grade is the standard commercial form, with purity typically specified at 95% or higher for industrial use.
It is available in drum and IBC quantities, with specifications aligned to industrial polymer and coatings applications rather than food or pharmaceutical use cases.
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Physical Properties
| Melting Point | 22-24 °C |
| Boiling Point | 205 °C @ Press: 9.8 Torr |
| Density | 1.05 g/cm³ @ Temp: 20 °C |
| Flash Point | >230 °F |
| Appearance | yellow liquid |
| Color | Clear pale yellow |
| Form | Oily Liquid |
| Water Solubility | <0.1 g/100 mL at 20 ºC |
| Vapor Pressure | 0.2 mm Hg ( 160 °C) |
| Refractive Index | n 20/D 1.471(lit.) |
| Log P | 3.120 |
Safety & Handling
Danger GHS08 GHS06 GHS07 GHS09 GHS05 Hazard Statements H301 Toxic if swallowed H314 Causes severe skin burns and eye damage H315 Causes skin irritation H319 Causes serious eye irritation H330 Fatal if inhaled H341 Suspected of causing genetic defects H360 May damage fertility or the unborn child H372 Causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory protection. P316 Get emergency medical help immediately. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P320 Specific treatment is urgent (see … on this label). P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29319090 |
| UN Number | 2922 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 77-58-7
- EC Number
- 201-039-8
- Mol. Weight
- 631.6
- HS Code
- 29319090
- Category
- UV Absorbers & Stabilizers