Registration Dossier
Registration Dossier
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EC number: 202-182-9 | CAS number: 92-72-8
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 is available for two trophic levels, which are Daphnia and algae:
- Daphnia: EC50 (48h) > 4.31 mg/L
- Algae: EC50, EC10 (72h, growth rate) > 3.45 mg/L
The criteria in Table 4.1.0 (a) of Annex I of the CLP Regulation were applied. According to Table 4.1.0 (a), the substance should not be classified for acute aquatic toxicity as the EC50 value for algae is above the cut-off threshold value.
Long-term (chronic) aquatic hazard:
For chronic classification, there is 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 considered to be not readily biodegradable, hence Table 4.1.0 (b) (i) applies, and not Table 4.1.0 (b) (ii).
The chronic EC10 (72h, growth rate) for algae is > 3.45 mg/L, which is above the cut-off values for classification as aquatic chronic category 1 or 2. Therefore, based on this scheme the substance should not be classified for chronic aquatic toxicity.
Table 4.1.0 (b) (iii):
Classification based on available acute data available for 2 trophic levels and environmental fate data:
- Daphnia: EC50 (48h) > 4.31 mg/L
- Algae: EC50 (72h, growth rate) > 3.45 mg/L
Based on the criteria Table 4.1.0 (b) (iii), the substance should be classified for chronic aquatic toxicity category 2 since the EC50 value for the most sensitive species (algae) is found in between the range > 1 to < 10 mg/L and the substance is not readily biodegradable.
Most stringent classification:
The conclusion is that the substance should be classified for chronic aquatic hazard, category 2 based on the available long-term toxicity information for algae.
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