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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
supporting study
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

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

Materials and methods

GLP compliance:
no
Type of method:
other: QSAR
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
3,4-dichlorotoluene
EC Number:
202-447-9
EC Name:
3,4-dichlorotoluene
Cas Number:
95-75-0
Molecular formula:
C7H6Cl2
IUPAC Name:
1,2-dichloro-4-methylbenzene
Constituent 2
Reference substance name:
Benzene, 1,2-dichloro-4-methyl-
IUPAC Name:
Benzene, 1,2-dichloro-4-methyl-

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
3.83
Temp.:
25 °C

Any other information on results incl. tables

Log Kow(version 1.68 estimate): 3.83

Experimental Database Structure Match:
Name : 3,4-DICHLOROTOLUENE
CAS Num : 000095-75-0
Exp Log P: 3.95
Exp Ref : BIOBYTE (1995)

SMILES : Cc1ccc(CL)c(CL)c1
CHEM :
MOL FOR: C7 H6 CL2
MOL WT : 161.03
-------+-----+--------------------------------------------+---------+--------
TYPE | NUM | LOGKOW FRAGMENT DESCRIPTION | COEFF | VALUE
-------+-----+--------------------------------------------+---------+--------
Frag | 1 | -CH3 [aliphatic carbon] | 0.5473 | 0.5473
Frag | 6 | Aromatic Carbon | 0.2940 | 1.7640
Frag | 2 | -CL [chlorine, aromatic attach] | 0.6445 | 1.2890
Const | | Equation Constant | | 0.2290
-------+-----+--------------------------------------------+---------+--------
Log Kow = 3.8293

Applicant's summary and conclusion

Conclusions:
The log Pow of 3,4-dichlorotoluene is 3.83 (25 °C) (estimated with EPIWIN 4.00)