Registration Dossier
Registration Dossier
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EC number: 205-016-3 | CAS number: 131-17-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 2.3 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 2.3 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 23 ng/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 22 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.154 ng/kg sediment dw
- Extrapolation method:
- sensitivity distribution
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.002 ng/kg sediment dw
- Extrapolation method:
- sensitivity distribution
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 1.77 µg/kg soil dw
- Extrapolation method:
- sensitivity distribution
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The PNEC for the aquatic compartment is based on the short-term LC50 in fish, which in this case is the most sensitive trophic level. The assessment factor is based on the fact that at least one short-term L(E)C50 is present from each of three trophic levels (fish, invertebrates and algae) an data from a reproduction test with Daphnia. The LC50 value for fish was even lower than the NOEC of the long-term test with Daphnia.
For the compartments: sediment and soil, the use of statistical extrapolation is preferred for further PNEC derivation rather than the use of an assessment factor on the lowest NOEC. These calculations are all based on the PNEC for the aquatic compartment, which makes this a key value for PNEC determinations.
Conclusion on classification
Classification is based on the fact that the 96 hr LC50 (for fish) ≤ 1 mg/l, which means that the substance is classified as Acute Category 1. The harmonized classification and labelling within the EU also indicates classification of DAP as category 1 for aquatic chronic toxicity. This classification can be disputed because, although not readily degradable, DAP degrades by more than 70% within four weeks and the experimentally determined BCF is well below 500 with a log Kow < 4.
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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