Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.38 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.42 µg/L

Marine water

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

STP

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.085 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:
0.251 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
0.74 mg/kg food

Additional information

The log Koc value of 5.05 used in the calculation of soil and sediment PNEC's was calculated in EUSES 2.1 using the "predominantly hydrophobics"-(Q)SAR and an input value of 6.11 for log Kow.

Conclusion on classification

The short-term LC50 or EC50 values are 0.15, 0.042 and >0.1 mg/l, for fish, aquatic invertebrates and algae, respectively. All these toxicity values are well above the water solubility (11.2 ug/l) of isodecyl diphenyl phosphate (IDDPP), indicating that acute toxicity is not expected at the limit of solubility.

 

Poorly water soluble substances which do not exert acute toxicity at their limit of solubility may require a precautionary classification of R53 ‘May cause long term adverse effects in the aquatic environment’ under the DSD and Chronic Category 4 under the CLP Regulations. However, this precautionary stance is not required for IDDPP as data are available to demonstrate that it is readily biodegradable.

 

IDDPP is therefore not classified in respect of the environment under either Directive 67/548/EEC or Regulation 1272/2008/EC .