Registration Dossier
Registration Dossier
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EC number: 217-126-9 | CAS number: 1746-23-2
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- gas chromatography
- Type:
- log Pow
- Partition coefficient:
- 4.73
- Temp.:
- 20 °C
- pH:
- 4
- Type:
- log Pow
- Partition coefficient:
- 4.44
- Temp.:
- 20 °C
- pH:
- 7
- Type:
- log Pow
- Partition coefficient:
- 4.81
- Temp.:
- 20 °C
- pH:
- 9
- Details on results:
- The Partition Coefficient (P) for TBS in 1-Octanol and Water, denoted by POW, was calculated from
the ration:
Pow = concentration of TBS in octanol/concentration of TBS in water.
The Partition Coefficient is also often given in
the form of its logarithm to base ten (log P) - Conclusions:
- The partition coefficient of TBS was LogP = 4.44 at pH7
- Executive summary:
The partition coefficient of TBS was assessed using OECD 107 at 3 different octinal rations (1:1, 1:2 and 2:1) at pH 4, 7 and 9. Log P was 4.73, 4.44 and 4.81 at pH 4, 7 and 9, respectively.
Reference
Description of key information
The partition coefficient was assessed using OECD Guideline 107 at 3 different octanol ratios (1:1, 1:2 and 2:1) and at pH 4, 7 and 9.
The Log P was 4.73, 4.44 and 4.81 at pH 4, 7 and 9, respectively.
The log P at pH 7 was selected as most representative of environmental conditions.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 4.44
- at the temperature of:
- 20 °C
Additional information
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