Bis(2-ethylhexyl) malate

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

22 November 2017 to 03/04/2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

27 July 1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

Bis(2-ethylhexyl) malate

EC Number:

260-070-5

EC Name:

Bis(2-ethylhexyl) malate

Cas Number:

56235-92-8

Molecular formula:

C20H38O5

IUPAC Name:

1,4-bis(2-ethylhexyl) 2-hydroxybutanedioate

Test material form:

liquid

Details on test material:

Identification: Dermol DOM
Appearance: Clear colourless to pale yellow liquid
Batch: P7677
Purity/Composition: >95%
Test item storage: At room temperature
Stable under storage conditions until: 31 December 2018 (retest date)
Additional information
Test Facility test item number: 209081/A
Purity/Composition correction factor: No correction factor required
Test item handling: No specific handling conditions required
Molecular structure: Not indicated
Molecular formula: C20H38O5
Molecular weight: 358.5

Specific details on test material used for the study:

Identification: Dermol DOM
Appearance: Clear colourless to pale yellow liquid
Batch: P7677
Purity/Composition: >95%
Test item storage: At room temperature
Stable under storage conditions until: 31 December 2018 (retest date)

Additional information
Test Facility test item number: 209081/A
Purity/Composition correction factor: No correction factor required
Test item handling: No specific handling conditions required
Molecular structure: Not indicated
Molecular formula: C20H38O5
Molecular weight: 358.5

Results and discussion

Boiling point

Key result

Decomposition:

yes

Decomp. temp.:

ca. 250 °C

Any other information on results incl. tables

Preliminary test

The TGA curve of the test item is shown inFigure 1. Starting at 325°C, the weight of the sample decreased significantly. At 355°C, the sample weight had decreased by 25%.

After the experiment, a yellow liquefied residue remained in the sample container (original colour: colourless). The change of the colour indicated reaction and/or decomposition of the test item.

Main study

The DSC curve obtained with Experiment 1 is shown in Figure 2. During cooling, no effect were found (results are archived in the raw data). During heating an endothermic effect was starting at 250°C. The endothermic effect was probably obtained due to reaction and/or decomposition of the test item.

After the experiment, a light yellow liquefied residue remained in the sample container (original colour: colourless). The change of the colour indicated reaction and/or decomposition of the test item. 

An additional investigation of the melting temperature of the test item was performed placing two subsamples of the test item for 21 hours at -19.2 ± 0.4°C and at -83.6 ± 1.8°C respectively. It was observed after storage that the test item was a viscous liquid (≤ ‑20°C freezer) and a very viscous liquid (≤ -80°C freezer). According to this it was concluded that the melting temperature of the test item is < -80°C (< 193K).

Applicant's summary and conclusion

Conclusions:

It was determined that the test substance did not have a boiling point under the conditions of the test. Decomposition occured at circa. 250 °C.

Executive summary:

In this guideline (OECD 103) study, [conducted with GLP certification], the test substnce (EC 260-070-5) was found to have no boiling point, decomposition occured at 250 °C.