Registration Dossier
Registration Dossier
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EC number: 228-532-0 | CAS number: 6290-03-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.7 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.17 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.1 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1 798.2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 6.4 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.64 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:
- 0.25 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 1 666.7 mg/kg food
- Assessment factor:
- 30
Additional information
Conclusion on classification
The acute short-term fish, crustacean and algae toxicity of (R)-(-)-butane-1,3-diol is predicted to be L(E)C50 of greater than 100 mg/L; this is in excess of the acute classification cut-off of 1 mg/L.
The chronic long-term daphnid toxicity of the readily biodegradable (R)-(-)-butane-1,3-diol is predicted to be 21-day NOEC of greater than 85 mg/L; this is in excess of the chronic classification cut-off of 1 mg/L.
There is no evidence that (R)-(-)-butane-1,3-diol may present a danger to the structure and/or the functioning of the stratospheric ozone layer.
Based on the information summarized above, (R)-(-)-butane-1,3-diol does not meet the criteria for classification as an environmental hazard, nor does it meet the criteria for classification as a hazard to the ozone layer according to sections 4 and 5. of the European CLP (Regulation (EC) No 1272/2008 as amended).
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