Physicochemical properties and uses of dioctyltin diacetate
Diethylhexyltin Diacetate, referred to as DBT-DOTG, is a typical organotin compound that plays an important role in many fields because of its unique physical and chemical properties. The following is a detailed description of its physical and chemical properties and main uses.
Physical and chemical properties
Dioctyltin diacetate is a colorless to light yellow transparent liquid with the following remarkable physical and chemical properties:
Molecular formula and structure: The molecular formula of dioctyltin diacetate is C20H36O4Sn, which consists of two acetic acid groups and two octyl chains connected to a tin atom through an ester bond. This structure gives it special physical and chemical properties.
Melting point and boiling point: Due to its molecular structure, dioctyltin diacetate is usually liquid at room temperature. Please refer to the specific product description for specific melting point and boiling point data, as these parameters may vary due to differences in purity and preparation processes. .
Density and solubility: The density of this compound is approximately 1.055-1.075 g/cm³ (20/4℃), which indicates that it is heavier than water. It is insoluble in water, but easily soluble in various organic solvents such as esters, ethers, ketones, alcohols, and lipids, which facilitates its application in organic synthesis.
Stability and toxicity: Dioctyltin diacetate is relatively stable at room temperature, but due to the presence of organotin, attention needs to be paid to its potential environmental and biological toxicity. Appropriate safety measures should be taken during handling and storage to avoid contact with skin and inhalation of vapors.
Refractive index: Its refractive index is 1.490-1.500. This property can be used for the identification and purity analysis of substances.
Main purposes
Plastic stabilizer: In the plastics industry, especially in polyvinyl chloride (PVC) products, dioctyltin diacetate is used as a heat stabilizer. It can effectively prevent discoloration and embrittlement caused by thermal degradation of PVC during processing and use, extend the service life of the product, and improve the transparency and mechanical properties of the product. Its lack of sulfide contamination and good lubricity make it an ideal choice for food packaging materials.
Catalyst: In the field of synthetic materials, dioctyltin diacetate can be used as a catalyst to promote various chemical reactions, such as esterification reactions, polymerization reactions, etc. It can speed up the reaction rate, improve the yield and selectivity of the product, and is easy to separate after the reaction, reducing the formation of by-products.
Coatings and inks: In the manufacturing of high-end coatings and printing inks, dioctyltin diacetate is used as an additive to improve the fluidity and surface gloss of the product, while enhancing the weather resistance and UV resistance, giving the product better appearance and longer service life.
Other special applications: In addition, dioctyltin diacetate is also used as an intermediate in organic synthesis, participating in the construction of complex organic molecules; it is used as an active ingredient in wood antisepsis and anti-mildew treatment, using its bactericidal and anti-mildew properties to protect wooden materials. Protection from microorganisms.
Conclusion
With its unique physical and chemical properties, dioctyltin diacetate has shown wide application value in many industrial fields such as plastics, coatings, inks and organic synthesis. Although its environmental issues cannot be ignored, with the advancement of science and technology and the development of green chemistry, finding more environmentally friendly alternatives and improving production processes has become a future trend. When using and handling such chemicals, environmental protection and occupational health and safety regulations should be strictly observed to ensure sustainable development.
Further reading:
Dabco amine catalyst/Low density sponge catalyst
High efficiency amine catalyst/Dabco amine catalyst
Toyocat DT strong foaming catalyst pentamethyldiethylenetriamine Tosoh
DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)
DBU – Amine Catalysts (newtopchem.com)