Chemical name: 1,3,2,4-Dioxastannaboretane, 2,2-dibutyl-4-hydroxy

Final regulatory action has been taken for the category: Industrial

Final regulatory action: The chemical is Severely Restricted

Use or uses prohibited by the final regulatory action:

Shall be prohibited in a concentration equal to or greater than 0.1% in substances and constituents of preparations placed on the market. However, this provision shall not apply to this substance (DBB) or preparations containing it if these are intended solely for conversion into finished articles, among which this substance will no longer feature in a concentration equal to or greater than 0.1%.

Use or uses that remain allowed:

All other uses not listed above

The final regulatory action was based on a risk or hazard evaluation: Yes

Summary of the final regulatory action:

Shall be prohibited in a concentration equal to or greater than 0.1% in substances and constituents of preparations placed on the market. However, this provision shall not apply to this substance (DBB) or preparations containing it if these are intended solely for conversion into finished articles, among which this substance will no longer feature in a concentration equal to or greater than 0.1%.

The reasons for the final regulatory action were relevant to: Human health and environment

Summary of known hazards and risks to human health:

Dibutyl tin compounds inhibit the maturation of lymphocytes in the thymus and lymph nodes.

Summary of known hazards and risks to the environment:

Very toxic to aquatic organisms. May cause long-term adverse effects in the aquatic environment.

Date of entry into force of the final regulatory action: 01/01/2001