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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted calculation method

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Principles of method if other than guideline:
PCKOCWIN v. 1.66 (2000)
GLP compliance:
no
Type of method:
other: calculated
Media:
soil

Test material

Constituent 1
Chemical structure
Reference substance name:
Dimethyl maleate
EC Number:
210-848-5
EC Name:
Dimethyl maleate
Cas Number:
624-48-6
Molecular formula:
C6H8O4
IUPAC Name:
dimethyl (Z)-but-2-enedioate
Details on test material:
- Name of test material (as cited in study report): dimethyl maleate
- Analytical purity: not applicable
SMILES : O=C(OC)C=CC(=O)OC
CHEM : 2-Butenedioic acid (Z)-, dimethyl ester
MOL FOR: C6 H8 O4
MOL WT : 144.13

Study design

Batch equilibrium or other method

Computational methods:
--------------------------- KOCWIN v2.00 Results ---------------------------
Koc Estimate from Log Kow:
-------------------------
Log Kow (experimental DB) ......................... : 0.74

Koc Estimate from MCI:
---------------------
First Order Molecular Connectivity Index ........... : 4.702



Results and discussion

Adsorption coefficientopen allclose all
Type:
Koc
Value:
15.97
Type:
log Koc
Value:
1.203

Any other information on results incl. tables

Koc Estimate from Log Kow:

 -------------------------

        Log Kow (experimental DB) ......................... : 0.74

        Non-Corrected Log Koc (0.55313 logKow + 0.9251) .... : 1.3344

        Fragment Correction(s):

                 2  Ester (-C-CO-O-C-) or (HCO-O-C) ...... : -0.1312

        Corrected Log Koc .................................. : 1.2032

 

                        Estimated Koc: 15.97 L/kg  <===========

 

 Additionally:

Koc Estimate from MCI:

 ---------------------

        First Order Molecular Connectivity Index ........... : 4.702

        Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 3.0509

        Fragment Correction(s):

                 2  Ester (-C-CO-O-C-) or (HCO-O-C) ...... : -2.5939

        Corrected Log Koc .................................. : 0.4570

        Over Correction Adjustment to Lower Limit Log Koc ... : 1.0000

 

                        Estimated Koc: 10 L/kg  <===========

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Applicant's summary and conclusion