Registration Dossier
Registration Dossier
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EC number: 202-795-1 | CAS number: 99-86-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.017 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.017 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.196 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.02 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.023 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 8.333 mg/kg food
- Assessment factor:
- 300
Additional information
Conclusion on classification
The acute toxicity results show that Daphnia is the most sensitive species with a 48-hr EC50 (immobilisation) of 1.7 mg/l. Based on this value, alpha-terpinene does not meet the criteria for Aquatic Acute 1.
The acute daphnia EC50 (immobilisation) of 1.7 mg/L for alpha-terpinene alongside the fact that it is not rapidly biodegradable and the log Kow is > 4, mean that a classification as Aquatic Chronic 2 is warranted. An M-Factor is not required for this substance as the acute toxicity EC50 is >/= 1.0 mg/L.
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