Registration Dossier
Registration Dossier
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EC number: 277-288-1 | CAS number: 73138-39-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.017 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.17 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.695 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 16.95 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2.31 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 22.584 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 2.258 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:
- 4.507 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Additional information
Conclusion on classification
Classification relevant information
Biodegradation:
- Readily biodegradable (60.1% degradation after 28 d, OECD 301F)
Bioaccumulation:
- log Pow = 4.69 to > 10 (QSAR)
Aquatic short-term toxicity
- Fish: LC50 (96 h) > 10.26 mg/L (initial measured conc.), LC50 (96 h) > 100 mg/L (nominal) (OECD 203, 2019)
- Aq. invertebrates: EL50 (48 h) = 37.59 mg/L (nominal loading rate, OECD 202)
- Algae: ErL50 (72 h) = 16.95 mg/L (nominal loading rate, OECD 201)
Aquatic chronic toxicity
- ErL10 (72 h) = 6.85 mg/L (nominal loading rate, OECD 201)
Classification according to CLP
The UVCB substance fatty acids, coco, esters with 1,3-butanediol (CAS 73138-39-3) is rapidly biodegradable. According to the above listed key toxicity data algae was identified as the most sensitive species based on experimental data (ErL50 (72 h) = 16.95 mg/L). Long-term data is available only for algae with an ErL10 (72 h) = 6.85 mg/L (nominal). As there is no chronic data available for all three trophic levels, the classification is based on chronic and acute data by considering the most stringent outcome as stated in the Guidance on the Application of the CLP Criteria (version July 2017). Therefore, the substance is classified as Aquatic Chronic 3 (H412), according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).
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