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Tin(II) 2-ethyl hexanoate is the octaoate or 2-ethylhexanoate salt of tin.
Produced by the reaction of tin(II) oxide and 2-ethylhexanoic acid, Tin(II) 2-ethyl hexanoate is a clear colorless liquid at room temperature, though often appears yellow due to impurities, likely resulting from oxidation of Sn(II) to Sn(IV).
Tin(II) 2-ethyl hexanoate is sometimes used as a catalyst for ring-opening polymerization, such as for the production of polylactic acid.
CAS: 301-10-0
MF: C16H30O4Sn
MW: 405.12
EINECS: 206-108-6
Synonyms
2-ethyl-hexanoicacitin(2++)salt;STANNOUS 2-ETHYLHEXANOATE;STANNOUS 2-ETHYLHEXOATE;STANNOUS CAPRYLATE;Stannous octanoate;STANNOUS OCTOATE;TIN 2-ETHYL HEXANOATE;TIN 2-ETHYLHEXOATE;Hexanoic acid,2-ethyl-,tin(2+) salt (2:1);Hexanoic acid,2-ethyl-,tin(2+) salt;Stannous 2-ethylhexanoate;Stannous 2-ethylhexoate;Tin(II) 2-ethylhexanoate;Tin(2+) 2-ethylhexanoate;Nuocure 28;Stannous octoate;Tin octoate;Tin dioctoate;Tin bis(2-ethylcaproate);Stannous 2-ethylcaproate;T 10 (catalyst);T 10;Tin bis(2-ethylhexanoate);T 9;Cata-Chek 860;Fascat 2003;D 19;Stanoct T 90;Dabco T 16;Stannous(II) ethylhexanoate;Stannous dioctanoate;Neostann U 28;Stannous octanoate;Stannous caprylate;Stanoct;Kosmos 29;K 29;Dabco T 9;Tegokat 129;PC CAT T 9;U 28;XY 70;HMT 9;Dabco T 10;Bis(2-ethylhexanoate) tin;NSC 75857;2-Ethylhexanoic acid tin(2+) salt;Desmorapid SO;Kosmos K 5N;KCS 405T;S 93-5037;T-Cat 110;Niax D 19;BTN-Cat 110;Dabco DC 21;XY 70 (catalyst);Neostann E 80;Addocat SO;Kosmos 10P;Borchi Kat 28;K 5N;Reaxis C 129;Metacure T 9;Stannous iosoctanoate;B 23612;T 19;PUB 350;T 9 (catalyst);Menhover S 19;Menhover Tin S 19;S 19;A 67510;75831-41-3;2417629-16-2
Tin(II) 2-ethyl hexanoate, also known as tin(II)-octoate, is a salt of tin.
The clear yellow liquid is soluble in most organic solvents, but practically insoluble in water.
Tin(II) 2-ethyl hexanoate is viscous, combustible and has a variety of applications in the chemical industry.
Tin(II) 2-ethyl hexanoate, also known as dibutyltin bis(2-ethylhexanoate), is an organotin compound characterized by its coordination of tin with two 2-ethylhexanoate ligands.
Tin(II) 2-ethyl hexanoate typically appears as a pale yellow to colorless liquid and is known for its low volatility and moderate solubility in organic solvents.
Tin(II) 2-ethyl hexanoate serves primarily as a catalyst in various polymerization processes, particularly in the production of polyurethanes and polyesters.
The presence of tin in its +2 oxidation state contributes to its reactivity, making Tin(II) 2-ethyl hexanoate effective in facilitating chemical reactions.
Additionally, Tin(II) 2-ethyl hexanoate exhibits stability under normal conditions but can decompose upon exposure to moisture or high temperatures, releasing tin oxides and other byproducts.
Tin(II) 2-ethyl hexanoate Chemical Properties
Melting point: <-20°C
Boiling point: >200°C
Density: 1.251 g/mL at 25 °C(lit.)
Vapor pressure: 0.3Pa at 20℃
Refractive index: n20/D 1.493(lit.)
Fp: >110°C
Pka: 5.09[at 20 ℃]
Form: liquid
Specific Gravity: 1.251
Water Solubility: Miscible with water.
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
Exposure limits ACGIH: TWA 0.1 mg/m3; STEL 0.2 mg/m3 (Skin)
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
InChIKey: KSBAEPSJVUENNK-UHFFFAOYSA-L
LogP: 2.64 at 25℃
CAS DataBase Reference: 301-10-0(CAS DataBase Reference)
EPA Substance Registry System: Tin(II) 2-ethyl hexanoate (301-10-0)
White or light yellowish brown paste.
Soluble in petroleum ether, insoluble in water.
Uses
Tin(II) 2-ethyl hexanoate is susceptible to hydrolysis and oxidation and cannot be used in combination polyethers (premixes).
Tin(II) 2-ethyl hexanoate's catalytic activity is higher than that of dibutyltin dilaurate.
Tin(II) 2-ethyl hexanoate can be used as a catalyst for polyurethane, mainly in the production of soft block polyether type polyurethane foam, but also as a catalyst for polyurethane coatings, elastomers, room temperature curing silicone rubber, etc.
As Tin(II) 2-ethyl hexanoate is a divalent tin compound, it may be oxidized to tetravalent tin compound itself after foaming, and it remains in the foam body to play the role of an antioxidant, which stays in the foam after foaming and has no adverse effect on the foam performance.
Tin(II) 2-ethyl hexanoate is used as a polymerization initiator in polylactic acid production.
Tin(II) 2-ethyl hexanoate acts as an intermediate as well as a catalyst for urethane foams, lubricants, addition agents and stabilizers for transformer oils.
A catalyst for polylactide polymerization.
Tin(II) 2-ethyl hexanoate can be used as a catalyst in systems based on polyurethanes or silicone resins.
The addition of the tin compound leads to reduced curing times.
In addition, Tin(II) 2-ethyl hexanoate can be used as a cocatalyst together with amino catalysts to control the blowing reaction.
Thanks to their high activity, Tin(II) 2-ethyl hexanoate catalysts are used extensively in a verity of adhesives and sealants as well as varnishes and coatings.
Tin(II)-octoate impregnated silica in urethane powders are used for powder coating, the resulting coatings being resistant to harsh weather conditions.
Tin(II) 2-ethyl hexanoate has application as a gelling agent in the production of flexible polyurethane block foam acting as a catalyst.
In addition, Tin(II) 2-ethyl hexanoate catalyzes esterification reactions and show a high activity.
In silicone chemistry, Tin(II) 2-ethyl hexanoate catalyzes silanol condensation reactions to produce RTV silicones, which are mainly used as sealants in the automotive sector or similar applications.
Tin(II) 2-ethyl hexanoate is generally used as a process additive, lubricant or stabilizer for transformer oils.
Tin(II) 2-ethyl hexanoate is currently used as a catalyst for the polymerization of polylactides.
Tin(II) 2-ethyl hexanoate is the basic catalyst for the production of polyurethane foam, mainly used for the gelation reaction of polyether-polyurethane foaming.
Used as an auxiliary agent for polyurethane industry, and as a high-efficiency catalyst, anti-aging agent, etc. additives in the polyurethane industry, and as a high-efficiency catalyst, anti-aging agent.
Preparation
Tin(II) 2-ethyl hexanoate is produced by reacting 2-ethylhexanoic acid with sodium hydroxide to form sodium 2-ethylhexanoate, which then undergoes a complex decomposition reaction with stannous chloride by heating in an inert solvent.
