Registration Dossier

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.18 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1.8 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.018 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
no emission to STP expected

Sediment (freshwater)

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Sediment (marine water)

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

An invertebrate long-term study on Daphnia is available, but the short-term study on Daphnia was chosen to derive the PNEC (fresh), PNEC (marine) and PNEC (intermittent); this is because the short-term Daphnia study did not have the lowest L(E)C50; The most sensitive trophic level (algae) was chosen as the basis of the calculation. The EC50 of 180 mg/L was adjusted by a correction factor of 1000 as suggested by ECHA guidance to give the PNEC.

In regards to the PNEC for sediments no endpoint studies were performed using sediment organisms and the PNEC (sed) could not be derived using the partition coefficient method described in "Guidance on information requirements and chemical safety assessments Part B: Hazard Assessment" (ECHA) as the substance is inorganic and therefore the octanol-water partition coefficient could not be measured. The PNEC (soil) were not derived because the Cordierite is not likely to partition with organic matter.

Conclusion on classification

No chronic ecotoxicology tests were performed on the substance. The most sensitive acute toxicity test was found to be the acute toxicity to algae, which gave an EC50 of 180 mg/l. The substance is not classified as hazardous to the aquatic environment, based on EU CLP criteria.