Registration Dossier
Registration Dossier
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EC number: 287-719-5 | CAS number: 85567-07-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
In order to determine the classification for hazardous properties related to the aquatic environment, the criteria of the Regulation (EC) No 1272/2008 (CLP) version 2016 in Annex I were accurately followed.
Short-term (acute) aquatic hazard:
For classification, acute toxicity data are available for aquatic invertebrates (Daphnia) and algae:
Daphnia: EC50 (48h) > 90 mg/L (geometric mean, measured concentrations)
Algae: EC50 (72h, growth rate) = 44.7 mg/L
The criteria in Table 4.1.0 (a) of Annex I of the CLP Regulation were applied.
The lowest EC50 value was observed for algae, which is hence the most sensitive species. According to Table 4.1.0 (a) the substance should not be classified for acute aquatic hazard, as the lowest EC50 value is 44.7 mg/L, which is above the cut-off for classification of 1 mg/L.
Long-term (chronic) aquatic hazard:
For chronic classification, there are only chronic data available for one trophic level, algae. As described in Figure 4.1.1 in the CLP regulation (EC No 1272/2008, version 2016), the most stringent outcome of classification according to Table 4.1.0 (b) (i) or (ii) and (iii) should be used.
Table 4.1.0 (b) (i):
The substance is not readily biodegradable, hence Table 4.1.0 (b) (i) applies.
The EC10 (growth rate) was 1.36 mg/L, which is above the cut-off value for classification: 1 mg/L. Therefore, according to this table, the substance should not be classified.
Table 4.1.0 (b) (iii):
Classification based on available acute data available for the other trophic levels and environmental fate data:
Daphnia: EC50 (48h) > 90 mg/L (geometric mean, measured concentration) and EC50 (48h) > 100 mg/L (nominal concentration)
Log Kow < -2
The substance is not readily biodegradable.
At 100 mg/L nominal test concentration, 40 % inhibition is observed. It can hence be assumed that the EC50 value is significantly higher than 100 mg/L (nominal) or 90 mg/L (geometric mean, measured concentrations). Moreover, on average the test concentrations remained within 80 -120 % of the initial test concentration, with exceptional measurements outside this range. Therefore, it is justifiable to use the effect level expressed as nominal concentration, being LC50 > 100 mg/L. Based on the criteria Table 4.1.0 (b) (iii), the substance should hence not be classified.
Most stringent chronic classification:
The conclusion of both assessments is that the substance should not be classified.
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