Registration Dossier
Registration Dossier
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EC number: 270-485-3 | CAS number: 68442-68-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Marine water
- Hazard assessment conclusion:
- no data available: testing technically not feasible
STP
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Conclusion on classification
According to Regulation (EC) No. 1272/2008 / Regulation (EU) No 286/2011, Table 4.1.0 „Classification categories for hazardous to the aquatic environment“, a substance shall be classified under the ‘Safety net’ classification Category Chronic 4 in 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 (note 4), and which are not rapidly degradable in accordance with section 4.1.2.9.5 and have an experimentally determined BCF ≥ 500 (or, if absent, a log Kow ≥ 4), indicating a potential to bioaccumulate, which will be classified in this category unless other scientific evidence exists showing classification to be unnecessary. The substance is not readily biodegradable, has a logPow = 4.64 and its water solubility is 20.6 µg/l. There are two studies with some deficiencies on relevant pelagic organisms available. In a study similar to OECD 203 the LC50 was calculated as 0.92 g/l (96h) in Brachydanio rerio, and a study according to EU method C.2 in daphnia magna gave EL0 = 6.3 mg/l, EL100 > 100 mg/l, and approx. 50 % effect was achieved at an EL = 50 mg/l, based on motility. These values are clearly above the water solubility, and so, classification as aquatic chronic Cat 4 is triggered.
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