Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.057 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.008 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.006 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
2.2 mg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
8.89 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.889 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:
2.5 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

PNECS were derived for freshwater, saltwater, sediment, soil and micro-organisms using the experimental data or equilibrium partitioning calculations.

Conclusion on classification

Experimental results were identified for DCPD for the three trophic levels (algae, invertebrates, and fish) with variable reliability. QSAR estimates are also provided.

The acute key values gave an LC50 for freshwater fish of 15.7 mg/L, an EC50 for freshwater invertebrates of 0.823 mg/L and an EC50 for freshwater algae of 22 mg/L. The chronic key value gave a NOEC for freshwater fish of 0.98 mg/L, a NOEC for invertebrates of 0.574 mg/L and an algal growth inhibition NOEC of 1.7 mg/L.

As the acute key value for aquatic invertebrates is 0.823 mg/L, the substance meets the criteria for acute classification category 1 under CLP with the hazard phrase H400: ‘very toxic to aquatic life’ and this has been added as a self-classification to the dossier. As the substance is not readily biodegradable, the lowest chronic key value indicates that DCPD meets the criteria for classification as Chronic Category 2 under CLP, with the hazard phrase H411: ‘toxic to aquatic life with long lasting effects’.