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Registration Dossier
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EC number: 944-572-8 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.011 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 20 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.51 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.151 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:
- 0.301 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 33.33 mg/kg food
- Assessment factor:
- 90
Additional information
Conclusion on classification
Biodegradation: not readily biodegradable: 0% in 28 d (OECD 302C)
Bioaccumulation: BCF = 159 (OECD 305, read across)
Aquatic short-term toxicity
96 h, LC50 (Brachydanio rerio): 1.1 mg/L (EU method C.1, read across)
48 h, EL50 (Daphnia magna): 2.7 mg/L (EU method C.2, read across)
72 h, ErC50 (Desmodesmus subspicatus): 498.32 mg/L (OECD 201)
Aquatic long-term toxicity
91d, NOEC (Oncorhynchus mykiss): 0.006 mg/L (ASTM E 1241-05, read across)
21 d, NOEL (Daphnia magna): 0.189 mg/L (OECD 211, read across)
72 h, NOEC (Desmodesmus subspicatus): 101.2 mg/L (OECD 201)
CLP
Based on the data above, 5-(C11-C12 alkyl, branched)-2-hydroxy-benzaldehyde is not considered to be rapidly degradable. The bioaccumulation potential is low. Acute aquatic toxicity was observed to be above 1 mg/L. Valid chronic data are available with a NOELR (72 h) of 101.2 mg/L for Desmodesmus subspicatus, a 21d-NOEL of 0.189 mg/L for Daphnia magna and a 91d-NOEC of < 0.1 mg/L (= 0.006 mg/L) for Danio rerio tested with the read across substance Phenol,4 -nonyl-,branched (CAS 84852-15-3). Therefore, 5-(C11-C12 alkyl, branched)-2-hydroxy-benzaldehyde needs to be classified and labelled as environmental hazard Chronic Cat. 1 (M = 10) according to the 2nd ATP of the Regulation (EC) No.1272/2008 (CLP).
DSD
The acute toxicity is between 1 and 10 mg/L and the substance is not readily biodegradable. Therefore, 5-(C11-C12 alkyl, branched)-2-hydroxy-benzaldehyde needs to be classified and labelled as environmental hazardous (R51/53) according to Directive 67/548/EEC.
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