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STANNOUS OCATATE
CAS NO: 301-10-0
Tin(II) 2-ethylhexanoate or tin(II) octoate or stannous octoate (Sn(Oct)2) is a compound of tin. Produced by the reaction of tin(II) oxide and 2-ethylhexanoic acid, it 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).
It is sometimes used as a catalyst for ring-opening polymerization, such as for the production of polylactic acid.
GENERAL DESCRIPTION & APPLICATIONS
Metallic carboxylates, metal salts of carboxylic acids, have industrial applications in;
Drier/Additive for paints, coatings and inks; Driers are substances put into paint to make dry quickly.
They are metallic salts of low-molecular-weight (chiefly C8) fatty acids or naphthenic acids. Naphthenic acid is a complex of carboxylic acids( various low-molecular-weight fatty acids believed to have cyclopentane ring mainly).
Hydrocarbon parts take oxygen in air and metals act as catalyst to speed up the oxidative coating. Cobalt is the most useful.
It is a powerful oxidation catalyst and can keep whiteness. Auxiliary metals should be added to prevent surface wrinkling after drying.
Primary metals which can replace for cobalt are zirconium, lead, cerium and iron and auxiliary metals are like calcium, manganese, barium, zinc, lithium.
Catalyst for chemical reactions (polymerization, esterification, oxidation, condensation, hydrogenation and other reactions) and catalystic special applications in lubricant and grease additives, fuel combustion additives to enhance and stabilize the performance of fuels.
Rubber Adhesion Promoters ; Metallic naphthenates, neodecanoates, resinates, boroneodecanoates, and stearates are widely used in rubber industry especially in the radial tire industry to promote adhesion between the rubber wire coat compound and the brass-coated steel belt. Cobalt carboxylates are most widely used.
Polyurethane catalysts: Tin, bismuth, mercury, zinc carboxylates and their blends with amines are used as catalysts in the production of rigid, flexible polyurethanes and elastomers.
Unsaturated Polyester Promoters: Cobalt, Potassium, Copper, and Zinc carboxylates (mainly octoates and naphthenates) are used as initiators/promoters for curing of polyester resins.
Racemic lactide (D,L-lactide) was bulk-polymerized comparatively using stannous octoate and zinc metal as initiators.
A two-level fractional factorial design was used to assess the influence of selected experimental variables with respect to intermolecular transesterification, whose extent in the resulting high molecular weight poly(D,L-lactide)s (PLA50) was investigated by13C NMR.
Five variables, namely polymerization temperature, monomer-to-initiator ratio, polymerization time, nature of the initiator and monomer degassing-time, were found significant and were ranked according to their average effect on transesterification.
A significant interaction of polymerization temperature and polymerization time was also detected.
Zinc led to lower stereoregularity than stannous octoate.
Known for its reliability as a tin-based catalyst, Niax catalyst stannous octoate is an excellent candidate to consider for use in the production of polyurethane flexible slabstock foam.
It can also be used in conjunction with a tertiary amine catalyst to achieve an optimum foaming process.
Niax catalyst stannous octoate is most typically used in PU foam production for furniture, bedding and carpet applications.
Tin 2-Ethylhexanoate (Tin Octoate) is a source of Tin that dissolves in organic solvents as an organometallic compound (also known as metalorganic, organo-inorganic and metallo-organic compounds).
Ethylhexanoates are carboxylates with many commercial applications.
They are widely used in various catalysts for oxidation, hydrogenation and polymerization and as an adhesion promoter.
It is usually immediately available in most volumes. Ultra-high-purity and high-purity forms may be considered.
Tin 2-Ethylhexanoate is one of several organo-metallic compounds (also known as metalorganic, organo-inorganic, and metallo-organic compounds) recently sold for uses requiring non-aqueous solubility by American Elements under the tradename AE Organo-Metallics.
Solar energy and water treatment applications. Similar results can sometimes be achieved with Nanoparticles and thin film deposition.
Main observation and conclusion
Ring-opening polymerization (ROP) (Sn(Oct) 2) of cyclic esters in the presence of stannous octoate is the main way to obtain biodegradable aliphatic polyesters, an important family of biodegradable polymers that are widely used in the fields of biomedical polymers and environmentally friendly materials and are still rapidly being developed.
The underlying mechanism is considered via a coordination-splicing pathway, but the pathway is still open due to the lack of direct experimental evidence.
Here we question this issue with density functional theory (DFT) calculations. According to our DFT calculations and the Curtin-Hammett assessment below, carbonyl oxygen has a significant advantage over ester oxygen.
Consumer Uses
Stannous octate is used in the following products: adhesives and sealants, coating products and fillers, putties, plasters, modelling clay.
Other release to the environment of Stannous octate is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
More About Catalyst Stannous Octoate
This gel catalyst features a fast gelling reaction, low use level and relatively safe processing. The important role it plays with regard to polyurethane flexible foam is in providing catalytic activity to the isocyanate and polyol reaction.
Article service life
Release to the environment of Stannous octate can occur from industrial use: formulation of mixtures, formulation in materials, as processing aid, in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Other release to the environment of Stannous octate is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
Stannous octate can be found in complex articles, with no release intended: vehicles and machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines).
Stannous octate can be found in products with material based on: plastic (e.g. food packaging and storage, toys, mobile phones), fabrics, textiles and apparel (e.g. clothing, mattress, curtains or carpets, textile toys) and rubber (e.g. tyres, shoes, toys).
Widespread uses by professional workers
Stannous octate is used in the following products: polymers, adhesives and sealants, coating products and fillers, putties, plasters, modelling clay.
Stannous octate has an industrial use resulting in manufacture of another substance (use of intermediates).
Stannous octate is used in the following areas: mining, formulation of mixtures and/or re-packaging and building & construction work.
Stannous octate is used for the manufacture of: plastic products.
Other release to the environment of Stannous octate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use and indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters).
Formulation or re-packing
Stannous octate is used in the following products: polymers, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay and pH regulators and water treatment products.
Stannous octate has an industrial use resulting in manufacture of another substance (use of intermediates).
Release to the environment of Stannous octate can occur from industrial use: formulation of mixtures, formulation in materials, in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and as processing aid.
Uses at industrial sites
Stannous octate is used in the following products: polymers, adhesives and sealants, coating products, pH regulators and water treatment products and fillers, putties, plasters, modelling clay.
Stannous octate has an industrial use resulting in manufacture of another substance (use of intermediates).
Stannous octate is used in the following areas: mining, building & construction work and formulation of mixtures and/or re-packaging.
Stannous octate is used for the manufacture of: plastic products, chemicals and furniture.
Release to the environment of Stannous octate can occur from industrial use: in the production of articles, in processing aids at industrial sites, as processing aid and as processing aid.
Potential applications for catalyst stannous octoate include:
• Polyurethane flexible foam
• Furniture
• Bedding
• Carpet
Abstract
Bulk polymerizations of ε-caprolactone (CL) were conducted at 130 °C, in which the structure and amount of initiator were varied. Polymerization induction periods were observed and attributed to slow heat transfer and to the type of alcohol used as initiator. Induction periods persisted until virtually complete consumption of both ethylene glycol (EG) and 1,3-propanediol (PD). 1-Butanol displayed no detectable induction.
1H NMR suggested that induction was a result of strong and unique interactions between the diols and stannous octoate, which lead to the formation of more stable, less reactive stannous alkoxides compared to stannous alkoxides derived from the polymer chain end. Only after virtually all free diol was consumed did chain propagation commence at the normal rate.
The rate of polymerization was insensitive to the [CL]/[EG] ratios chosen for this study. The results were consistent with a mechanism in which stannous alkoxide initiator is formed in situ via reaction between stannous octoate and alcohol, and stannous alkoxide chain ends are the actively propagating species.
PURPOSE:
In the manufacture of polyurethane foam, the gelation reaction between the polyol and isocyanate is catalyzed through the use of organometallic catalysts (primarily Tin compounds).
For flexible slab-stock foam, Stannous Octoate is the preferred catalyst. By varying the concentration of Stannous Octoate in the formulation, a balance can be achieved between the gelation and the blowing reaction.
APPLICATION:
Stannous Octoate is the standard gelling catalyst for use in the manufacture of flexible slabstock foam.
It can also be used as a catalyst for molded polyurethane foams, polyurethane coatings and sealants.
ADVANTAGES:
Gulbrandsen’s T-Cat-110 Stannous Octoate is manufactured under ISO 9001 quality control standards, resulting in a product with uniform tin levels, consistent performance and no undesirable color or odor being imparted to the foam.
While packaged under a nitrogen atmosphere, stabilizers are also added to minimize oxidation that may occur due to accidental exposure to air, ensuring that the product will perform reliably.
Gulbrandsen can also provide Stannous Octoate in dilute mixtures to various ratios with Diisononyl Phthalate (DINP), Dioctyl Phthalate (DOP), Mineral Oil, and Natural Polyol.
PROPERTIES:
Results are for pure T-Cat-110 Stannous Octoate
Gardner Color = 7 Max
Specific Gravity = 1.22 – 1.28
Refractive Index = 1.481 – 1.499
% Stannous Tin = 28.0% Min
Viscosity @ 25°C = 500 cps MAX
Appearance
Stannous Octoate appears as a colorless-pale yellow liquid.
Solubility
Degrades in water to form Sn(IV).
Uses
Stannous octoate is used as a catalyst in the production of polymers.
Classification
Stannous Octoate may cause eyes or skin irritation as well as sensitization or allergic reactions. It may cause long-term adverse effects in the aquatic environment.
Specifications
Technical specifications are provided on request according to the application: stannous octoate is stored in original packing and under conditions mentioned on the safety data sheet (SDS).
About Stannous Octoate Market:
Stannous Octoate is an oily liquid with the chemical formula C16H30O4Sn.
It is a polyurethane catalyst mainly used in the production of soft lump foam. It can also be used as a polymerization initiator in the fields of (polyurethane) coatings and elastomers, and in the production of rubber and polylactic acid.
NOTES
Endothall uses and applications include: Prepostemergence herbicide, defoliant, desiccant, aquatic algicide, growth regulator Stannous octoate uses and applications include: Polymerization catalyst for mfg. of PU foam, coatings, adhesives, sealants, elastomers; lubricant; addition agent; stabilizer for transformer oils; curing agent for RTV silicone rubber; catalyst for PU resins in food-pkg. Adhesives
CAS names;
Hexanoic acid, 2-ethyl-, tin(2+) salt (2:1)
IUPAC names:
2-ethylhexanoate; tin(+2) cation
stannous octoate
2-ethylhexanoate; tin(2+)
2-ethylhexanoate;tin(2+)
Bis(2-etilesanoato) di stagno
Hexanoic acid, 2-ethyl-, tin(2+) salt
Hexanoic acid, 2-ethyl-, tin(2[plus]) salt
Hexanoic acid, 2-ethyl-,tin(2+)salt
Stannous 2-ethylhexanoate
Stannous Hexanoate
Stannous octoate
Tin bis(2-ethylhexanoate)
tin bis(2-ethylhexanoate)
Tin bis(2-ethylhexanoate)
tin bis(2-ethylhexanoate)
tin(2+) bis(2-ethylhexanoate)
Tin(II) 2-Ethylhexanoate
tin(II) 2-ethylhexanoate
Tin(II)octoate
Trade names:
2-Ethylhexanoic acid, tin(II) salt
Bis(2-ethylhexanoate)tin
Ethylhexanoic acid tin(2+) salt
FASCAT 2003 CATALYST
Hexanoic acid, 2-ethyl, tin salt
Hexanoic acid, 2-ethyl-, tin(2+) salt
Metatin(TM) Catalyst S-26
Stannous ethylhexanoate
Stannous octoate
Stannous-2-ethyl hexanoate
Tin 2-ethylhexanoate
Tin II octoate
Tin(II) 2-ethylhexanoate
Tin(II) bis(2-ethylhexanoate)
Tin(II) ethylhexanoate
Synonyms: STANNOUS OCTOATE
301-10-0
Tin(II) 2-ethylhexanoate
Tin octoate
Tin(II) bis(2-ethylhexanoate)
Stannous 2-ethylhexanoate
Hexanoic acid, 2-ethyl-, tin(2+) salt
Tin ethylhexanoate
2-ethylhexanoate;tin(2+)
Tin 2-ethylhexanoate
Stannous 2-ethylhexoate
Tin(II) 2-ethylhexylate
Tin(2+) 2-ethylhexanoate
2-Ethylhexanoic acid tin(II) salt
Stannous-2-; Ethylhexoate
2-Ethylhexanoic acid stannous salt; tin(2+) bis(2-ethylhexanoate)
Tin bis(2-ethylhexanoate)
Catalyst T-9
EINECS 206-108-6
NSC 75857
Dabco T-9
99% Stannous octoate
Catalyst Stannous octoate
Tin di(2-ethylhexanoate)
EC 206-108-6
Tin (II) 2-ethylhexanoate
SCHEMBL15145
C16H30O4Sn
Tin bis(2-ethyl hexa-noate)
SCHEMBL161914
DTXSID1027138
AKOS015909688
AKOS030228479
AKOS032949843
Bis(2-ethylhexanoic acid)tin(II) salt
