Registration Dossier
Registration Dossier
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EC number: 204-798-3 | CAS number: 126-71-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.014 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.143 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 3.72 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 2.05 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.205 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:
- 0.426 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
Log Kow: 3.72 (EU method A.8)
Water solubility: 264 mg/L (EU method A.6)
Biodegradation: 79 -82 % in 28 days (OECD 301B): readily biodegradable
BCF: WoE approach: not bioaccumulative
Aquatic acute toxicity:
For fish: LC50 (96h) = 17.8 mg/L (OECD 203)
For algae: EC50 (72h) = 14.3 mg/L (OECD 201)
For crustacea: EC50 (48h) = 24.0 mg/L (OECD 202)
Aquatic chronic toxicity:
For fish: NOEC(28d): no data
For algae: EC10(72h) = 10.4 mg/L (OECD 201)
For crustacea: NOEC(21d): no data
Classification according to CLP
Based on the data above, Triisobutyl phosphate (CAS 126-71-6, TiBP) is readily biodegradable. Acute aquatic toxicity is observed to be in the range of 10-100 mg/L. Valid chronic data are not available. Therefore, TiBP does not need to be classified and labelled for the environment according to the 2nd ATP of the Regulation (EC) No. 1272/2008 (CLP).
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