Registration Dossier
Registration Dossier
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EC number: 205-550-7 | CAS number: 142-62-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.56 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.02 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.56 mg/L
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.05 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.105 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:
- 0.093 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information
Biodegradation in water: 84% (BOD)
BCF: 255 L/kg in fish after 28 days exposure (OECD 305); read across
Acute toxicity:
- to fish: LC50 (96 h) = 88 mg/L for Pimephales promelas (nominal, similar to OECD 203)
- to invertebrates: EC50 (48 h) = 72 mg/L for Daphnia m.(nominal, OECD 202); read across
- to algae: ErC50 (72 h) = 56.4 mg/L for Selenastrum c.(nominal, OECD 201); read across
Chronic toxicity:
- to fish: NOEC (28 d) = 2.0 mg/L for Danio r. (nominal, OECD 305 E); read across
- to invertebrates: NOEC (21 d) = 17.9 mg/L for Daphnia m.(TWA, OECD 211); read across
- to algae: NOErC (72 h) = 32 mg/L for Selenastrum c.(nominal, OECD 201); read across
Classification justification according to CLP
Hexanoic acid (CAS 142-62-1) is considered to be rapidly degradable. The acute aquatic toxicity L(E)C50 values are > 1 mg/L for fish, invertebrates and algae. Valid read-across chronic toxicity data are available - the NOECs are > 1 mg/L for fish, invertebrates and algae. Therefore, hexanoic acid (CAS 142-62-1) does not need to be classified and labelled as environmental hazard according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).
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