Registration Dossier
Registration Dossier
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EC number: 259-393-4 | CAS number: 54914-37-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.015 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.147 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 3.04 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 47.92 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 4.79 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 9.57 mg/kg soil dw
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The EC50/LC50-value for the most sensitive species Daphnia magna was 14.7 mg/L (48 hours) based on the measured DOC value. 1,3,3-trimethyl-N-(2-methylpropylidene)-5-[(2-methylpropylidene)amino]cyclohexanemethylamine itself is not readily biodegradable and has a log Kow of 5.2. As the substance is rapidly hydrolysed (t 1/2 <5 hours) data for the two degradation products isophorone diamine and isobutyraldehyde are considered. Isobutyraldehyde is rapidly biodegradable and E(L)C50 values between 84 mg/L and 308 mg/L were determined. The substance has no long lasting effects in the environment and shows no acute toxicity to aquatic organisms.
Based on the available acute and chronic aquatic ecotoxicity data (the NOEC from a chronic study with Daphnia magna is >1mg/L) and the results from the biodegradation study (readily biodegradable) with isophorone diamine the substance is not environmentally classified according to GHS.
Therefor no classification of the parent substance is necessary. Because of fast hydrolysis the environmental data for isophorone diamine and isobutyraldehyde are relevant and both substances are not classified.
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