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Physical & Chemical properties

Partition coefficient

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Administrative data

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method)
GLP compliance:
no
Type of method:
slow-stirring method
Partition coefficient type:
octanol-water

Test material

Constituent 1
Reference substance name:
Tetradecane, chloro
IUPAC Name:
Tetradecane, chloro
Test material form:
liquid
Details on test material:
Tetradecane chlorinated by Chemica del Cinca to specific chlorination levels.
Specific details on test material used for the study:
Chemical name C14 chlorinated N-alkane, 50% Cl (wt.)
Batch/Lot number C14CL50 20160623
Purity 100% (UVCB)
Total chlorine (see annex 2) 50.07% w/w
Expiry date 01-12-2018
Solubility in water insoluble in water
Stability not relevant
Storage at ambient temperature in the dark
The concentrations cited in this report refer to the as-received sample of C14 chlorinated N-alkane, 50% Cl (wt.).

Study design

Analytical method:
mass spectrometry

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
>= 5.88 - <= 6.82
Temp.:
18.7 °C
pH:
6

Applicant's summary and conclusion

Conclusions:
The calculated weighted average log KOW (log KOW,Av) value for triplicate experimental set-ups was 6.58 with a standard deviation of 0.09. The experimental values are in agreement with the lower range of predicted KOW values by others. The log KOW values of C14 with different chlorine numbers varied between 5.98 and 6.96, and showed no trend with the chlorine number.
Executive summary:

The objective of this study was to experimentally determine the KOW of a C14 polychlorinated n-alkane test material with 50% Cl content by weight using OECD Test Guideline 123. The calculated weighted average log KOW (log KOW,Av) value for triplicate experimental set-ups was 6.58 with a standard deviation of 0.09. The experimental values are in agreement with the lower range of predicted KOW values by others. The log KOW values of C14 with different chlorine numbers varied between 5.98 and 6.96, and showed no trend with the chlorine number.