Overview
Dibutyltin dichloride (CAS 683-18-1 ), also known as dibutyltin chloride, is an organotin compound used industrially as a catalyst and stabilizer precursor across polymer and coating systems.
It functions primarily as a reactive intermediate in the synthesis of other dibutyltin derivatives and as a direct catalyst in condensation and polymerization processes for various industrial applications.
In PVC and polymer processing, it serves as a precursor to heat stabilizer packages that prevent thermal degradation during compounding and extrusion, ensuring material integrity during high-heat manufacturing.
Coating formulators use it as a catalyst in moisture-cure urethane and silicone systems, where it accelerates crosslinking at ambient conditions to improve the efficiency of the curing process.
In adhesive and sealant manufacturing, it promotes cure in tin-catalyzed RTV silicone formulations, directly affecting open time and bond development for high-performance industrial bonding solutions.
Printing and packaging applications rely on it within specialty ink and lacquer systems requiring controlled polymerization initiation to achieve specific finish and durability requirements for the end user.
Dibutyltin dichloride is supplied as a white to off-white crystalline solid. It is available in technical grade, with purity levels typically at 95% or higher depending on the specific supplier specification.
Packaging is offered in drum and bulk quantities suited to industrial procurement volumes. This ensures a reliable supply chain for large-scale manufacturing operations requiring consistent chemical inputs.
Contact us for supply of Dibutyltin dichloride
Physical Properties
| Melting Point | 43 °C |
| Boiling Point | 135 °C @ Press: 10 Torr |
| Density | 1.4 |
| Flash Point | >230 °F |
| Appearance | white to beige crystalline low melting mass |
| Color | White |
| Form | Crystalline |
| Water Solubility | 320 mg/L, hydrolises in hot water |
| Vapor Pressure | 0.0016 hPa (25 °C) |
| Refractive Index | 1.4991 |
Safety & Handling
Danger GHS05 GHS06 GHS08 GHS09 GHS07 Hazard Statements H301 Toxic if swallowed H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H330 Fatal if inhaled H341 Suspected of causing genetic defects H360 May damage fertility or the unborn child H370 Causes damage to organs 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. P261 Avoid breathing 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. P272 Contaminated work clothing should not be allowed out of the workplace. 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. P317 Get emergency medical help. 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. P308+P316 Get emergency medical help immediately. P333+P317 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+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 | 29310095 |
| UN Number | 2928 |
| ADR Class | 6.1 |
| Packing Group | II |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 683-18-1
- EC Number
- 211-670-0
- Mol. Weight
- 303.84
- HS Code
- 29310095
- Category
- Catalysts & Catalyst Precursors