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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
adsorption / desorption, other
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
2016-06-02
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method

Data source

Reference
Reference Type:
other: QSAR method
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Guideline:
other: (Q)SAR method
Principles of method if other than guideline:
KOCWIN (v2.00) from EpiSuite v4.10 (Copyright 200-2008 US EPA)
Type of method:
other: (Q)SAR calculation
Remarks:
KOCWIN (v2.00) from EpiSuite v4.10 (Copyright 200-2008 US EPA)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,4-dichlorobutane
EC Number:
203-778-1
EC Name:
1,4-dichlorobutane
Cas Number:
110-56-5
Molecular formula:
C4H8Cl2
IUPAC Name:
1,4-dichlorobutane
Details on test material:
- SMILES notation: CLCCCCCL
Specific details on test material used for the study:
SMILES : CLCCCCCL
CHEM : Butane, 1,4-dichloro-
MOL FOR: C4 H8 CL2
MOL WT : 127.01

Results and discussion

Adsorption coefficientopen allclose all
Key result
Type:
log Koc
Value:
2.119 dimensionless
Remarks on result:
other: (Q)SAR calculation, KOC estimate from MCI
Type:
Koc
Value:
131.5 L/kg
Remarks on result:
other: (Q)SAR calculation, KOC estimate from MCI
Type:
Koc
Value:
274.4 L/kg
Remarks on result:
other: (Q)SAR calculation, KOC estimate from LogKow
Key result
Type:
log Koc
Value:
2.438 dimensionless
Remarks on result:
other: (Q)SAR calculation, KOC estimate from LogKow

Any other information on results incl. tables

--------------------------- KOCWIN v2.00 Results ---------------------------

Koc Estimate from MCI:

---------------------

First Order Molecular Connectivity Index ........... : 2.914

Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 2.1190

Fragment Correction(s) --> NONE : ---

Corrected Log Koc .................................. : 2.1190

Estimated Koc: 131.5 L/kg <===========

Koc Estimate from Log Kow:

-------------------------

Log Kow (Kowwin estimate) ......................... : 2.81

Non-Corrected Log Koc (0.8679 logKow - 0.0004) ..... : 2.4384

Fragment Correction(s) --> NONE : ---

Corrected Log Koc .................................. : 2.4384

Estimated Koc: 274.4 L/kg <===========

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
The LogKOC has been calculated to be 2.119 based on KOC estimation from MCI and 2.4384 based on the estimation from logKow.