Registration Dossier
Registration Dossier
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EC number: 209-128-3 | CAS number: 556-52-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.05 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.501 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.005 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 56 mg/L
- Assessment factor:
- 100
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Persistence
Studies are available which indicate that 2,3 -epoxypropanol (glycid) is readily biodegradable. It is therefore expected that it will degrade rapidly and to be completely mineralised. It is not expected to be persistent.
Potential to accumulate
QSAR-predicted and measured log 10 Kow values for 2,3 -epoxypropanol are less than 3.0. The potential for it to bioaccumulate in the tissues of organisms that inhabit aquatic or terrestrial matrices contaminated with 2,3 -epoxypropanol is therefore negligible. The risk that 2,3 -epoxypropanol (glycid) may biomagnify through successive trophic levels of aquatic or terrestrial food chains is consequently also negligible.
Environmental fate and behaviour
Studies have been to illustrate the short-term toxicity of 2,3 -epoxypropanol to fish, alga and aquatic invertebrates. The lowest endpoint from these studies (96 -hour LC50 fish) was 50.1 mg/L. As the substance is readily biodegradable, it is not expected to be toxic to the aquatic environment.
According to Regulation (EC) No. 1272/2008 and Directive 67/548/EEC, no classification is triggered based on available data.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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