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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
partition coefficient
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Calculation by KOWWIN 1.68
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: WSKOW v1.42
Title:
Unnamed
Year:
2012

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
(Q)SAR
GLP compliance:
no
Type of method:
other: QSAR
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
1,1,3,3-Tetraoctyl-1-3-bis((2,2,3,5-oxotetramethylhexyl)oxy)distannoxane, dimer
EC Number:
947-528-6
Molecular formula:
C104O10H212Sn4
IUPAC Name:
1,1,3,3-Tetraoctyl-1-3-bis((2,2,3,5-oxotetramethylhexyl)oxy)distannoxane, dimer
Test material form:
liquid

Results and discussion

Partition coefficient
Key result
Type:
log Pow
Partition coefficient:
ca. 16.14
Temp.:
20 °C
pH:
ca. 7
Remarks on result:
other: QSAR

Any other information on results incl. tables

 

 Log Kow(version 1.68 estimate): 16.14

 

SMILES : CCCCCCCC[Sn]12(CCCCCCCC)OC(=O[Sn](CCCCCCCC)(CCCCCCCC)(O=C(O1)C(C)(CC)

        CCC(C)C)=O2)C(C)(CC)CCC(C)C

CHEM  : 3,7-bis[(3R)-3,6-dimethylheptan-3-yl]-1,1,5,5- tetraoctyl-2 λ³,4,6,8 λ³,9 λ ³-pentaoxa- 1,5-distannabicyclo[3.3.1]nona-1(9),2,7-trieneMOL FOR: C52 H106 O5 Sn2

MOL WT : 1048.84

TYPE 

NUM

LOGKOW FRAGMENT DESCRIPTION

COEFF

VALUE

Frag 

12 

-CH3   [aliphatic carbon]               

0.5473 

6.5676

Frag 

34

-CH2-  [aliphatic carbon]               

0.4911 

16.6974

Frag

-CH    [aliphatic carbon]               

0.3614 

0.7228

Frag 

2

C    [aliphatic carbon - No H, not tert

0.9723 

1.9446

Frag 

2

-O-    [oxygen, aliphatic attach]       

-1.2566 

-2.5132

Frag 

2

-tert Carbon [3 or more carbon attach]  

0.2676 

0.5352

Frag 

Tin [Sn] { oxygen attach }              

-2.6500 

-5.3000

Frag 

Oxygen [aliphatic; not +2 valence; misc]

-0.8000**

-2.4000

Factor

1

Fused aliphatic ring unit correction     

-0.3421 

-0.3421

Const

 

Equation Constant                        

 

0.2290

 

 

 

 

 

NOTE 

 

An estimated coefficient (**) used                 

 

 

 

 

 

 

 

 

 

 

Log Kow  

16.1413

 

Applicant's summary and conclusion

Conclusions:
 Log Kow(version 1.68 estimate): 16.14