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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

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Endpoint:
partition coefficient
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted calculation method.
Qualifier:
according to guideline
Guideline:
other: calculation method
Type of method:
other: calculation method
Type:
log Pow
Partition coefficient:
1.83
Remarks on result:
other: No data on Temp and pH (calculation method)

Below are the detailed results provided by KOWWIN :

TYPE

NUM

LOGKOW FRAGMENT DESCRIPTION

COEFF

VALUE

Frag

6

Aromatic Carbon

0.2940

1.7640

Frag

2

—OH [hydroxy, aromatic attach]

-0.4802

-0.9604

Frag

1

-CH3   [aliphatic carbon]               

0.5473 

0.5473

Frag

1

-CH2-  [aliphatic carbon]               

0.4911 

0.4911

Frag

1

Ring reaction -> alkyloxy ortho to -OH  

-0.2560 

-0.2560

Const

 

Equation constant

 

0.2290

 

Log Kow = 1.8288

 

The molecular weight of Guetol is 138.16 g/mol, hence within the estimation domain of the validation set (27.03 - 991.15 g/mol). All the functional groups are included in the list of descriptors, and the occurrence of each fragment is below the maximum number in the training/validation sets:

 

Fragment Description

Coef

Training Set

Validation Set

Max

Number

Max

Number

Aromatic Carbon

0.2940

24

1790

30

8792

—OH [hydroxy, aromatic attach]

-1.4086

6

187

9

1525

-CH3   [aliphatic carbon]               

0.5473 

13

1401

20

7413

-CH2-  [aliphatic carbon]               

0.4911 

18

1083

28

7051

Ring reaction -> alkyloxy ortho to -OH  

-0.2560 

2

7

4

40

 

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: No test substance information, no guideline, secondary literature, but reference database.
Qualifier:
no guideline available
Guideline:
other: No information on the guideline is available but this published data is coming from a reference database
GLP compliance:
not specified
Type of method:
other: No information on the method is available, but this published data is coming from a reference database.
Partition coefficient type:
octanol-water
Type:
log Pow
Partition coefficient:
1.68
Remarks on result:
other: no additional data available

No more data.

Description of key information

Partition coefficient range: 1.68 - 1.83

Key value for chemical safety assessment

Additional information

Two results were available, one experimental and one calculated. As they were in the same range, no key study was selected and a "Weight of Evidence" approach is applied. With a range from 1.68 to 1.83, Guetol has a low potential of bioaccumulation.