Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
no exposure of sediment expected

Sediment (marine water)

Hazard assessment conclusion:
no exposure of sediment expected

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:
insufficient hazard data available (further information necessary)

Additional information

Study results available from acute toxicity testing in fish, Daphnia and algae are considered to be unsuitable to derive PNECs for freshwater, marine water, sediment and soil.

Due to the lack of environmental release of the substance from use, it is not possible to calculate a reasonable predicted environmental concentration (PEC). Therefore, it is considered that a PEC/PNEC comparison would not give meaningful results and would not accurately assess the substances environmental concern.

However, the available study results indicate that the substance does not show toxic effects at its limit of water solubility to fish, Daphnia or algae. Hence in the event of unintentional release to the aquatic environment, the risk to the environment is considered to be low.

Conclusion on classification

Acute toxicity study results are available in fish, Daphnia and algae.

Fish:

Two studies were acute fish toxicity studies have been conducted.

In one study (Ellenberg W & Rielly PD (1999)) the test substance showed some acute toxicity at the limit of water solubility, however this may have been caused by low oxygen levels.

In the other study (Liu H (1998)) the test substance showed no toxicity at the limit of water solubility in the study.

Daphnia:

The substance was not acutely toxic to Daphnia magna at the limit of its water solubility in this study.

Algal:

The substance was not acutely toxic to Selenastrum capricornutum at the limit of its water solubility in this study.

However, as the substance is not classed as readily biodegradable, has a very low water solubility (<5μg/l) and has a partition coefficient (n-octanol/water) of log Pow >6, the following environmental classification applies to the substance:

DSD (67/548/EEC): R53 - may cause long-term adverse effects in the aquatic environment

CLP (EC No 1907/2006): Aquatic chronic 4 - H413: May cause long lasting harmful effects to aquatic life.