Stannous octoate
CAS Number
301-10-0
EC Number
206-108-6
What is Stannous octoate?
Stannous octoate (CAS 301-10-0), also known as stannous 2-ethylhexanoate, is an organotin compound used as a catalyst in polyurethane, silicone, and polymer manufacturing.
Where is Stannous octoate used?
- Polyurethane foam and elastomer manufacturing: catalyzes the reaction between polyols and isocyanates
- Flexible and rigid foam systems: controls gel time and cell structure
- Silicone rubber: cures RTV formulations
- Bioplastics: initiates ring-opening polymerization of lactide monomers in PLA and other biodegradable polymer synthesis
- Coatings and sealants: tunes pot life and through-cure speed in moisture-cure and two-component systems
- It accelerates curing and polymerization reactions, enabling controlled chain growth and cross-linking.
Commercial specifications
- Pale yellow to amber liquid, typically at concentrations of 95% and above
- Technical grade; purity and tin content specified as primary quality parameters
- Packaging ranges from small drums to IBC containers
Other Names (Synonyms)
tin(II) octoate|stannous 2-ethylhexanoate|2-Ethylhexanoic acid tin(II) salt|Sn(Oct)2|RefChem:58487|Tin(II) 2-ethylhexanoate|Tin dioctoate|Tin octoate
What are the physical properties of Stannous octoate?
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℃
How is Stannous octoate classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H319 Causes serious eye irritation
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.
Which trade and regulatory codes apply to Stannous octoate?
HS Code 29159000
WGK (Germany) 1