Organotin compounds are a class of organic compounds in which tin atoms form covalent bonds with carbon atoms. These compounds have been widely used in fungicides, antifungal agents, catalysts, etc. in the past. However, they are considered persistent, bioaccumulative, and toxic substances that may be toxic to aquatic organisms and may act as immunotoxins. Therefore, major global markets have passed legislation to restrict the use of organotins in finished products. For example, Annex XVII of the REACH regulation sets a limit of 0.1% for dibutyltin, dioctyltin and trisubstituted organotin compounds. Different countries and regions may have slightly different limits for organotin compounds. The following is a brief introduction to the relevant standards of major countries and regions:
1. United States: The U.S. Environmental Protection Agency has issued TSCA Chapter VI, which restricts the use and discharge of certain organotin compounds during manufacturing, importing and processing .
2. EU: The EU REACH regulation regulates and regulates certain organotin compounds.
3. China: Chinese national standards limit the content of dibutyltin and tributyltin in aluminum curing coatings, and at the same time restrict the use of organotin compounds in infant toys limit.
4. Japan: Japan has restricted the use and standards of organotin compounds in many fields such as food packaging materials, toys and children’s products.
In summary, countries and regions have different usage and limit values of organotin compounds. When in use, it should be operated in accordance with the relevant local standards to avoid harm to the human body and the environment.
