Registration Dossier
Registration Dossier
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EC number: 940-123-5 | CAS number: 866889-74-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 7.1 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.4 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.7 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.25 mg/kg sediment dw
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.13 mg/kg sediment dw
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.2 mg/kg soil dw
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
PNEC aqua (freshwater)
Lowest value of chronic freshwater ecotoxicity test results for all three trophic levels is algae ErC10 (72h) 71 µg/L. An assessment factor of 10 is used in accordance ECHA Guidance on information requirements and chemical safety assessment R10.
PNEC aqua (marine water)
Lowest value of chronic freshwater ecotoxicity test results for all three trophic levels is algae ErC10 (72h) 71 µg/L. An assessment factor of 100 is used in accordance ECHA Guidance on information requirements and chemical safety assessment R10.
PNEC aqua (intermittent releases)
Lowest value of acute freshwater ecotoxicity test results for all three trophic levels is algae ErC50 (72h) 140 µg/L. An assessment factor of 100 is used in accordance ECHA Guidance on information requirements and chemical safety assessment R10.
PNEC STP
The NOEC (3h) of 100 mg/L from a sludge respriation inhibiton according OECD 209 was used to derive the PNEC STP applying an assessment factor of 10 in accordance ECHA Guidance on information requirements and chemical safety assessment R10.
PNEC sediment
Two freshwater sediment ecotoxicity results from the read-across substance C20/22 ATQ are available with the lowest NOEC (28d) 62.5 mg/kg dw. For PNEC sediment (freshwater) an assessment factor of 50 is used in accordance ECHA Guidance on information requirements and chemical safety assessment R10. For PNEC sediment (marine water) an assessment factor of 500 is used.
PNEC air
The registration substance has a very low vapour pressure (5.07E-05 Pa at 25°C). Based on this no risk for air breathing animals and humans is expected.
PNEC soil
Three terrestrial ecotoxicity results from the read-across substance C20/22 ATQ are available. The lowest NOEC (28d) of 10 mg/kg d from a soil microorganism study is chosen and an assessment factor of 50 is used in accordance ECHA Guidance on information requirements and chemical safety assessment R10.
PNEC oral
The registration substance has a log Kow of 2.01 at pH 7 and therefore the potential for bioaccumulation and biomagnification is low.
Conclusion on classification
The lowest acute ecotoxicity value is the ErC50 (72h) for algae of 0.14 mg/L and the lowest chronic value is the ErC10 (72h) for algae of 0.07 mg/L. The registration substance is readily biodegradable and has a low potential for bioaccumulation (log Kow <3).
Based on the inherent properties of the registration substance the conclusion on classification is the following:
DSD 67/648/EEC
N, R50
CLP 2nd ATP 2011/286/EU
Short-term aquatic hazard: Category Acute 1, H400, M factor 1
Long-term aquatic hazard: Category Chronic 2, H411
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