Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.6 µg/L
Assessment factor:
50

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.06 µg/L
Assessment factor:
500

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
50 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
3.8 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:
7.6 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Three short term results are available: fish (96 hr LC50 > 1000 mg/L loading rate); Daphnia (48 h EC50 > 100 mg/L loading rate), and algae (72 h ErC50 > 100 mg/L) where there was no toxicity observed up to the water solubility limit. Two chronic studies are available: 72 h ErL10 algae, > 100 mg/L and chronic Daphnia with an EL10 > 10 mg/L for reproduction.

Conclusion on classification

Acute classification

The existing acute data for fish, algae and Daphnia show a NOEC value > 100 mg/L (loading). As all effect values are above 1 mg/L, there is no acute classification for this substance.

Chronic classification

Bis(2,4-dichlorobenzoyl) peroxide is not readily biodegradable, and the measured log Kow is 6. The chronic data available are 72 h ErC10 algae, > 100 mg/L, loading and EL10 >1 0 mg/L for Daphnia. When chronic data for less than 3 trophic levels are available the classification is assessed using both the existing chronic and acute data, and the most stringent outcome is chosen.

Based on chronic data: (EL10 Daphnia, > 10 mg/L): No classification

Based on acute data (NOECs > 100 mg/L loading): No classification

Category chronic 4 evaluation - Substance is poorly water soluble, with no acute toxicity recorded up to the water solubility, is not rapidly degradable and the log Kow > 4. However the available chronic toxicity endpoints > water solubility, thus it does not fit into this category.

Most stringent outcome: No classification

Overall classification: None