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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Partition coefficient

Currently viewing:

Administrative data

Endpoint:
partition coefficient
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
Measurement of partition coefficient not feasible, hydrolysis. Log KOW calculated for hydrolysis product

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2020

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
Log Kow(version 1.69), Part of Epiwin

Test material

Constituent 1
Chemical structure
Reference substance name:
2,4-dichlorobenzoic acid
EC Number:
200-067-8
EC Name:
2,4-dichlorobenzoic acid
Cas Number:
50-84-0
Molecular formula:
C7H4Cl2O2
IUPAC Name:
2,4-dichlorobenzoic acid

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
2.82
Temp.:
25 °C
Remarks on result:
other: pH not specified

Any other information on results incl. tables

Log Kow(version 1.69 estimate): 2.82

SMILES : O=C(O)c1ccc(CL)cc1CL
CHEM :
MOL FOR: C7 H4 CL2 O2
MOL WT : 191.01
-------+-----+--------------------------------------------+---------+--------
TYPE | NUM | LOGKOW FRAGMENT DESCRIPTION | COEFF | VALUE
-------+-----+--------------------------------------------+---------+--------
Frag | 6 | Aromatic Carbon | 0.2940 | 1.7640
Frag | 2 | -CL [chlorine, aromatic attach] | 0.6445 | 1.2890
Frag | 1 | -COOH [acid, aromatic attach] |-0.1186 | -0.1186
Factor| 1 | Ring reaction -> ortho to aromatic acid |-0.3425 | -0.3425
Const | | Equation Constant | | 0.2290
-------+-----+--------------------------------------------+---------+--------
Log Kow = 2.8209

Applicant's summary and conclusion