Registration Dossier
Registration Dossier
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EC number: 609-276-2 | CAS number: 3663-80-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Available data: the acute data are as follows and no chronic data.
Daphnia acute data: 48h-EC50: > 100 mg/L (measured)
Algae growth inhibition data: 72h-ErC50 value (growth rate): > 100 mg/L (measured); 72h No-Observed Effect Concentration (NOEC): 100 mg/L (measured)
And the substance is not readily biodegradable (persistent) and log Pow at pH 2 and pH 7 were 1.6, 0.5, respectively.
Acute classification:
In according to Regulation (EC) 1272/2008, amendment 286/2011, table 4.1.0 (a), acute classification is either Category Acute 1 or not classified, Category Acute 1 applies if EC50 for fish or Daphnia magna or algae ≤ 1 mg/L.
For this substance all EC50 values are > 1mg/L (actual values all >100 mg/L), therefore the substance is not classified for acute aquatic toxicity.
Chronic classification:
In according to Regulation (EC) 1272/2008, amendment 286/2011, table 4.1.0 (b. ⅲ), when adequate chronic toxicity data are not available, chronic classification is either Category Chronic 1, Category Chronic 2, Category Chronic 3 or not classified.
As actual EC50 values all are >100 mg/L, Category Chronic 1, 2 and 3 do not apply (Category Chronic 3 is required if EC50 EC50 for fish or Daphnia magna or algae > 10 to ≤ 100 mg/L and the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 (or, if absent, the log Kow ≥ 4)).
In addition, “Safety net” classification (Category Chronic 4) are cases when data do not allow classification under the above criteria but there are nevertheless some grounds for concern.This includes, for example, poorly soluble substances for which no acute toxicity is recorded at levels up to the water solubility, and which are not rapidly degradable and have an experimentally determined BCF ≥ 500 (or, if absent, a log Kow ≥ 4).This substance does not meet this criteria.
Therefore the substance is not classified for chronic aquatic toxicity.
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