Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
12 µg/L
Assessment factor:
100
PNEC freshwater (intermittent releases):
12 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
1.2 µg/L
Assessment factor:
1 000

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
3.3 mg/L
Assessment factor:
10

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.044 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:
no exposure of soil expected

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The following data for aquatic toxicity and environmental fate are available:

 

  • Biodegradability: the test item is not readily biodegradable
  • Log Kow = 2.9
  • Short term toxicity to aquatic invertebrates: EC50-48h = 6.7 mg/L.
  • Toxicity to aquatic algae: EC50-72h = 1.2 mg/L

 Regarding these data, tert-amyl hydroperoxide should be classified as follows:

 

  • According to the Directive 67/548/EC: R51/53
  • According to CLP: chronic toxicity category 2

Conclusion on classification