Registration Dossier
Registration Dossier
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EC number: 245-010-8 | CAS number: 22457-23-4
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:
- 20.11.96 to 29.11.96
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- Lot: 263992
Purity: 96.3% (GC, sum of two isomers). - Analytical method:
- high-performance liquid chromatography
- Type:
- log Pow
- Partition coefficient:
- 2.2
- Temp.:
- 30 °C
- pH:
- 7
- Type:
- log Pow
- Partition coefficient:
- 2.4
- Temp.:
- 30 °C
- pH:
- 7
- Conclusions:
- The partition coefficients n-octanol/water corresponding to the two isomers of STEMONE are :
log Pow 2.2
log Pow 2.4 - Executive summary:
The Partition Coefficient n-octanol/water of STEMONE has been determined by the Reverse Phase High Performance Liquid Chromatographic Method according to the OECD Guidelines for Testing of Chemicals, Method No. 117. The partition coefficients n-octanol/water corresponding to the two isomers of STEMONE are :
log Pow 2.2
log Pow 2.4
The determination was performed at 30°C.
Reference
RESULTS
TEST SUBSTANCE:
STEMONE (1)
tR1 = 3.855
tR2 3.856 -----> tRm 3.8555
k 1.133
log k = 0.054 -----> log Pow= 2.2
STEMONE (2)
tR1 = 4.004
tR2 = 4.006 -----> tRm = 4.005
k 1.216
log k = 0.085 -----> logPow= 2.4
CONCLUSION
The partition coefficients n octanol/water corresponding to the two isomers of STEMONE are:
log Pow2.2
log Pow2.4
The determination was performed at 30°C.
Description of key information
log Pow=2.2
log Pow=2.4
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.4
- at the temperature of:
- 30 °C
Additional information
The partition coefficients n octanol/water corresponding to the two isomers of STEMONE are:
log Pow=2.2
log Pow=2.4
The determination was performed at 30°C.
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