Physical and chemical properties of dibutyltin dilaurate
Dibutyltin Dilaurate (DBTDL) is a multifunctional organotin compound that is widely used in many countries because of its unique physical and chemical properties. It has a wide range of applications in various industrial fields. The main physical and chemical properties of dibutyltin dilaurate will be introduced in detail below.
Basic information
- Chemical formula: C32H64O4Sn
- CAS number: 77-58-7
- Molecular weight: about 631.56 g/mol
- English name: Dibutyltin dilaurate
- Alias: dibutyltin dilaurate, dibutyltin dilaurate
Appearance and status
Dibutyltin dilaurate usually appears as a light yellow or colorless oily liquid at room temperature. When the temperature drops to a certain level, it will transform into white crystals. This change in morphology reflects the change in the physical state of the compound with temperature.
Solubility
- Solubility in organic solvents: Dibutyltin dilaurate is easily soluble in a variety of organic solvents, including but not limited to benzene, toluene, carbon tetrachloride, ethyl acetate, chloroform, acetone and petroleum ethers, and all industrial plasticizers.
- Water solubility: Insoluble in water, which is a common feature of most organotin compounds.
Thermal stability and boiling point
- Boiling Point: Dibutyltin dilaurate has a high boiling point, which means it vaporizes at higher temperatures. This is crucial for its stability in industrial applications.
- Thermal stability: Good thermal stability allows dibutyltin dilaurate to maintain its structural integrity under heating conditions and will not easily decompose. This characteristic makes it suitable for use in polyvinyl chloride. Very effective as a heat stabilizer in (PVC) processing.
Density
- Density: The density of dibutyltin dilaurate is usually higher than that of water, but the specific value will vary depending on the test conditions.
Refractive index
- Refractive Index: The refractive index of dibutyltin dilaurate is an important parameter for applications where optical properties are sensitive.
Reactivity
- Catalytic activity: Dibutyltin dilaurate is an efficient catalyst, especially in the catalysis of polyurethane foam synthesis, polyester synthesis, room temperature vulcanization silicone rubber, and polyvinyl chloride plastic additives. field, its catalytic activity makes it one of the preferred organotin catalysts.
- Chemical stability: In most cases, dibutyltin dilaurate exhibits good chemical stability, but under certain conditions, such as strong acid, strong alkali or extreme oxidation environment, It may break down or react.
Security and Storage
- Toxicity: Dibutyltin dilaurate is an organotin compound. Such substances usually have certain toxicity, especially may have adverse effects on the reproductive system and nervous system. Therefore, appropriate safety measures need to be followed during handling and storage, such as wearing personal protective equipment, ensuring good ventilation, and avoiding inhalation of vapors and skin contact.
- Storage conditions: It is recommended to store in a dry and cool area with proper ventilation to avoid the mixing of moisture or other impurities. At low temperatures (≤8°C), the compound may crystallize, but it can return to liquid state after heating without affecting its performance.
Structure and composition
The molecular structure of dibutyltin dilaurate contains two butyltin groups and two lauric acid groups. This structure gives it unique physical and chemical properties, making it excellent in a variety of industrial applications.
Conclusion
The physical and chemical properties of dibutyltin dilaurate determine its wide application in many industrial fields, from catalysts to stabilizers, to various chemical synthesis reaction. However, considering its potential health and environmental risks, safety guidelines should be strictly followed when used, while safer alternatives are actively explored to promote the sustainable development of the chemical industry.
Extended reading:
bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)
stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)
polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)
N-Methylmorpholine – morpholine