Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
hydrolysis
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:
HYDROWIN Program v.1.67
GLP compliance:
no

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

Estimation method (if used):
HYDROWIN Program v.1.67

Results and discussion

Any other information on results incl. tables

 Kb Half-Life at pH 8:     11.941 days  

 Kb Half-Life at pH 7:    119.413 days  

--------------------------- HYDROWIN v2.00 Results ---------------------------

 

 

NOTE: Fragment(s) on this compound are NOT available from the fragment

   library. Substitute(s) have been used!!! Substitute R1, R2, R3,

   orR4 fragments are marked with doubleastericks"**".

 

ESTER: R1-C(=O)-O-R2               ** R1: -CH=CH-CO-CH3      

000624-48-6                   R2: -CH3               

 Kb hydrolysis at atom# 2: 3.359E-001 L/mol-sec

 

ESTER: R1-C(=O)-O-R2               ** R1: -CH=CH-CO-CH3      

000624-48-6                   R2: -CH3               

 Kb hydrolysis at atom# 7: 3.359E-001 L/mol-sec

 

 Total Kb for pH > 8 at 25 degC : 6.718E-001 L/mol-sec

 Kb Half-Life at pH 8:     11.941 days  

 Kb Half-Life at pH 7:    119.413 days  

Applicant's summary and conclusion