Where It Comes From
Past and some industrial uses in antifouling paints, wood preservatives, and biocides; leaches from painted surfaces into water and accumulates in sediments [2][4].
How You Are Exposed
Eating contaminated fish or shellfish; breathing or touching dust/paint chips during boat maintenance; workplace handling of TBT products; contact with polluted water near marinas/shipyards [1][2].
Why It Matters
Short-term skin/eye irritation; long-term immune and hormone (endocrine) effects, and nervous system and reproductive effects seen in animal studies; very toxic to aquatic life and builds up in fish and shellfish [1][2][3][4].
Who Is at Risk
Boatyard/shipyard workers; DIY boat owners; people who frequently eat shellfish from polluted areas; pregnant people and children; communities near contaminated harbors [1][2].
How to Lower Your Exposure
Follow local fish/shellfish advisories; avoid dry-sanding old antifouling paints (use containment, wet methods, PPE); keep kids away from boat work; dispose of paint waste as hazardous; employers should provide controls and protective gear [1][2][4].
References
- [1]ATSDR. Toxicological Profile for Tin and Tin Compounds. Agency for Toxic Substances and Disease Registry, 2005.
- [2]WHO/IPCS. Environmental Health Criteria 116: Tributyltin Compounds. World Health Organization, 1990.
- [3]U.S. EPA IRIS. Tributyltin oxide (CASRN 56-35-9). Integrated Risk Information System, U.S. Environmental Protection Agency.
- [4]U.S. EPA. Ambient Aquatic Life Water Quality Criteria for Tributyltin (TBT). EPA 822-R-03-031, 2003.