Overview
Stannous octoate (CAS 301-10-0 ), also known as stannous 2-ethylhexanoate, is an organotin compound used as a catalyst across polyurethane, silicone, and polymer manufacturing.
It accelerates curing and polymerization reactions, enabling controlled chain growth and cross-linking in industrial production processes. In polyurethane foam and elastomer manufacturing, it catalyzes the reaction between polyols and isocyanates.
This material controls gel time and cell structure in both flexible and rigid foam systems. Silicone rubber producers rely on it to cure RTV formulations, where reaction rate and final mechanical properties depend on catalyst selection.
In polylactic acid (PLA) and other biodegradable polymer synthesis, it initiates ring-opening polymerization of lactide monomers. This makes it a standard catalyst choice for modern bioplastics production and development.
Coatings and sealant formulators use it to tune pot life and through-cure speed in moisture-cure and two-component systems. It is supplied as a pale yellow to amber liquid, typically at concentrations of 95% and above.
It is available in technical grade , with purity and tin content specified as primary quality parameters. Packaging ranges from small drums to IBC containers to suit both laboratory-scale and bulk industrial procurement.
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Physical Properties
| Melting Point | 33 °C |
| Boiling Point | 150 °C |
| Density | 1.28 g/cm³ |
| Flash Point | >110°C |
| Color | viscous |
| Form | liquid |
| Water Solubility | Miscible with water. |
| Vapor Pressure | 0.3Pa at 20℃ |
| Refractive Index | n 20/D 1.493(lit.) |
| Log P | 2.64 at 25℃ |
Safety & Handling
Danger GHS05 GHS07 GHS08 GHS09 Hazard Statements H315 Causes skin irritation H317 May cause an allergic skin reaction H318 Causes serious eye damage H319 Causes serious eye irritation H361 Suspected of damaging fertility or the unborn child H411 Toxic to aquatic life with long lasting effects H412 Harmful to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. 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. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P321 Specific treatment (see … on this label). P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P332+P317 Get emergency medical help. P333+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. 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 | 29159000 |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 301-10-0
- EC Number
- 206-108-6
- Mol. Weight
- 405.1
- HS Code
- 29159000
- Category
- Organometallic Compounds