Dibutyltin dilaurate substitute

Dibutyltin dilaurate (DBTDL) is a widely used polyvinyl chloride (PVC) stabilizer, polyurethane (PU) catalyst, and Highly efficient organotin compounds in organic synthesis. However, due to its possible negative effects on human health and the environment, including reproductive toxicity, bioaccumulation, and potential harm to ecosystems, the search for safer and more environmentally friendly alternatives has become an important topic in the fields of chemistry and materials science. Below are several dibutyltin dilaurate alternatives and their characteristics.

1. Organobismuth catalyst

Organobismtium catalysts are a type of non-toxic and environmentally friendly catalysts that have been much studied in recent years. Their application in polyurethane synthesis shows similar or even better catalytic activity than dibutyltin dilaurate. Organobismtium catalysts are usually based on bismuth acetate, bismuth acetylacetonate, etc. Through appropriate ligand modification, their catalytic activity and selectivity can be adjusted, while avoiding the environmental and health problems caused by organotin catalysts.

2. Zinc salts and zinc complexes

Zinc salts, such as zinc acetate, zinc stearate, etc., have also been developed as alternatives to dibutyltin dilaurate. Zinc salts have shown good performance in PVC stabilizers and PU catalysts. They can effectively inhibit the generation of HCl, prevent thermal degradation of PVC, and have low toxicity. In addition, zinc complexes, such as zinc soaps, also show good thermal stability and UV resistance.

3. Organic amine catalyst

Organic amine compounds, such as dimethylcyclohexylamine (DMCHA), N,N-dimethylbenzylamine (DMBA), etc., as catalysts for polyurethane synthesis, have fast reaction rates and high selectivity. . Although their catalytic efficiency may be slightly lower than organotin catalysts, in some applications comparable results can be achieved by adjusting the formulation.

4. Titanate catalyst

Titanate catalysts, such as titanium tetrabutoxide, can be used as catalysts in polyurethane synthesis. They have high catalytic activity at high temperatures and have certain thermal stability. One advantage of titanate catalysts is that they can provide longer open times in some cases, which facilitates mixing and processing of multi-component polyurethane systems.

5. Environmentally friendly PVC heat stabilizer

In addition to the substitution of the above catalysts, environmentally friendly stabilizers for PVC thermal stability are also constantly developing, such as calcium-zinc composite stabilizers, organotin alternative stabilizers (such as SICAT-03), etc., which are designed to reduce or Eliminate the use of traditional organotin stabilizers while maintaining or improving the performance of PVC products.

Conclusion

Looking for alternatives to dibutyltin dilaurate is a multidisciplinary research field involving chemistry, materials science, environmental science, etc. aspect. As the global awareness of environmental protection increases and various countries’ regulations on the use of hazardous substances become increasingly strict, the development of new, low-toxic, and environmentally friendly catalysts and stabilizers will become a future development trend. Enterprises, scientific research institutions and governments should work together to promote the development of green chemical technologies to achieve the goals of sustainable production and consumption.

Extended reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Dibutyltin dilaurate environmental regulations

Dibutyltin dilaurate (DBTDL), as an organotin compound, is widely used in many industrial fields due to its efficient catalytic properties, especially in polyurethane (PU) foam manufacturing, polyvinyl chloride (PVC) ) heat stabilizer and in organic synthesis. However, the use of dibutyltin dilaurate is not without controversy, and its potential effects on the environment and human health have raised global concerns. Therefore, many countries and regions have enacted a series of environmental regulations aimed at limiting or prohibiting the use of this compound to protect the ecological environment and public health.

EU REACH Regulation
The EU’s Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulations are one of the world’s comprehensive chemicals management frameworks. REACH requires manufacturers and importers to register the chemicals they produce and provide detailed chemical safety assessments. For dibutyltin dilaurate, REACH classifies it as a substance of very high concern (SVHC) and imposes strict restrictions on its use. In some applications, such as direct food contact items or children’s toys, the use of dibutyltin dilaurate has been completely banned. In addition, the EU also requires products containing dibutyltin dilaurate to be authorized and only allowed to be used when there are no viable alternatives.

U.S. Environmental Protection Agency (EPA) Regulations
The U.S. Environmental Protection Agency (EPA) also regulates the use of dibutyltin dilaurate. Under the Toxic Substances Control Act (TSCA), the EPA has the authority to evaluate and restrict the use of chemicals to protect the public from potential health risks. The EPA has conducted risk assessments of organotin compounds, including dibutyltin dilaurate, and has taken steps to limit their use in certain products, particularly those that may pose a risk of exposure to children and sensitive populations.

Other country regulations
In addition to the European Union and the United States, other countries and regions have also introduced their own regulations to control the use of dibutyltin dilaurate. For example, Canada includes it in the list of hazardous substances under the Canadian Environmental Protection Act (CEPA); Japan regulates it through the Chemical Substances Evaluation and Manufacturing Restriction Act (CMR); Australia passes the Industrial Chemicals Act ( IC Act) restricts its use.

International Convention
At the international level, the Stockholm Convention is concerned about persistent organic pollutants (POPs). Although dibutyltin dilaurate is not currently included in the POPs list, its similar organotin compounds, such as tributyltin, have been restricted by the convention. This shows that the international community is gradually recognizing the long-term impact of organotin compounds on the environment, and may adopt stricter control measures on the use of dibutyltin dilaurate in the future.

Industry self-regulation
In addition to government-level regulations, many industry organizations and companies have also begun to proactively reduce or eliminate the use of dibutyltin dilaurate and instead look for more environmentally friendly and safer alternatives. This trend of self-regulation not only responds to regulatory requirements, but also reflects corporate social responsibility, helping to enhance brand image and market competitiveness.

Conclusion
Regulations around the world are increasingly restricting the use of dibutyltin dilaurate due to the risks it poses to the environment and human health. These regulations not only reflect the importance of public health and environmental protection, but also promote the development of the chemical industry in a greener and more sustainable direction. Enterprises should pay close attention to changes in relevant regulations, adjust production strategies in a timely manner to ensure compliance with new environmental standards, and at the same time actively develop and adopt more environmentally friendly chemicals to meet future challenges.
Further reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

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:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE