Registration Dossier
Registration Dossier
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EC number: 229-934-9 | CAS number: 6846-50-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.014 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 3 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 5.29 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.529 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:
- 1.05 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 83.3 mg/kg food
- Assessment factor:
- 90
Additional information
Conclusion on classification
TXIB is not acutely toxic at the limit of water solubility (saturation). However, a NOEC in a long-term study (Daphnia magna) was observed in the range of 0.1 to ≤ 1.0 mg/L. The experimental BCF is < 500. The substance achieved > 60% degradation based upon CO2 evolution in a ready biodegradtion study (OECD 301B) but failed to meet the 10-day window criterion. This is likley caused by the intial test substance being greater than the water solubility of the substance. However, as the substance exhibited greater than 70% biodegradation in the 28 day study the substance is considered to be rapidly biodegradable. Based upon the long-term NOEC in the range of 0.1 to ≤ 1.0 mg/L and the substance being considered rapidly biodegradable, the substance has been classified as Chronic Category 3 under the CLP.
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