Gateway test
Halohydantoins (dihalodialkylhydantoins) (several)
1-Bromo-3-chloro5,5-dimethylhydantoin
1,3-Dibromo-5,5- dimethylhydantoin
3-Bromo-1-chloro5,5-dimethylhydantoin
1-Chloro5,5-dimethylhydantoin
1,3-Dichloro5,5-dimethylhydantoin
1,3-Dichloro5-ethyl-5-methylhydantoin
1-Bromo-3-chloro5-ethyl-5-methylhydantoin
1,3-Dibromo-5,5- dimethylhydantoin
3-Bromo-1-chloro5,5-dimethylhydantoin
1-Chloro5,5-dimethylhydantoin
1,3-Dichloro5,5-dimethylhydantoin
1,3-Dichloro5-ethyl-5-methylhydantoin
1-Bromo-3-chloro5-ethyl-5-methylhydantoin
General Information
- Product Names:
- Chemical Class: antimicrobial
- Uses: For microbial control in water and wa ter systems. In particular, the halohydantoins are used as disinfectants in commercial and residential swimming pools, spas and hot tubs; as sanitizers for treatment of toilet bowl water in homes; and for controlling bacterial and fungal contamination in a variety of industrial wate r systems.
- Beyond Pesticides rating:
Health and Environmental Effects
- Cancer: Not documented
- Endocrine Disruption: Not documented
- Reproductive Effects: Not documented
- Neurotoxicity: Not documented
- Kidney/Liver Damage: Not documented
- Sensitizer/ Irritant: Yes (1)
- Birth/Developmental: Not documented
- Detected in Groundwater: Not documented
- Potential Leacher: Not documented
- Toxic to Birds: Not documented
- Toxic to Fish/Aquatic Organisms: Yes (1)
- Toxic to Bees: Not documented
Additional Information
- Regulatory Status:
Gateway Health and Environmental Effects Citations
1. US EPA, Office of Prevention, Pesticides and Toxic Substances, Reregistration Eligibility Decisions (REDs), Interim REDS (iREDs) and RED Factsheets. https://archive.epa.gov/pesticides/reregistration/web/html/status.html.








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