Registration Dossier
Registration Dossier
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EC number: 203-455-5 | CAS number: 107-03-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.001 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 8.8 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.001 mg/kg sediment dw
- Assessment factor:
- 1
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0 mg/kg sediment dw
- Assessment factor:
- 1
- 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 mg/kg soil dw
- Assessment factor:
- 1
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
PNECs were derived using freshwater experimental ecotoxicity results for propane-1-thiol and ethanethiol along with calculated values for Koc and Henry's Law Constant. The PNECS derived using experimental data were based on Klimisch 1 or 2 studies (Klimisch et al 1997).
Conclusion on classification
The results of these studies indicate that propane-1-thiol would be classified as Acute and Chronic Category 1 under Regulation (EC) No 1272/2008, with the hazard statements "very toxic to aquatic life" and "very toxic to aquatic life with long lasting effects". With the lowest acute result of EC50 of 0.07 mg/L, propane-1-thiol falls within the multiplying factor category of 0.01 < L(E)C50 ≤0.1 and so an M-factor of 10 has been applied for both chronic and acute effects.
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