methyl (2E)-{2-[(2,5-dimethylphenoxy)methyl]phenyl}(methoxyimino)ethanoate

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2006

Report date:

2006

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

GLP compliance:

yes (incl. QA statement)

Type of method:

thermal analysis

Test material

Reference

Name:

Unnamed

Type:

Constituent

Details on test material:

- Name of test material (as cited in study report): MEOE
- Analytical purity: 95 %

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

113.4 °C

Atm. press.:

1 013 hPa

Any other information on results incl. tables

Results

Melting temperature (results of 1^st heating cycles)

	Extrapol. onset temp. [°C]	Peak Maximum *) [°C]	Extrapol. end temp. [°C]
1^st determination	113.4	114.3	116.0
2^nd determination	113.2	114.1	115.8
mean	113.3	114.2	115.9

*) with Seebeck correction

Observed thermic processes:

In the second heating cycle the endothermic peak is shifted to lower temperatures (onset temperature of me/ting peak from about 113°C to about 103°C). This can be interpreted as a

change of modification.

In order to survey the thermic behaviour of the test item a preliminary test was run between 0°C and 400°C (test 1, pierced crucible, air atmosphere) and further two tests were run between

50°C and 300°C (test 2, open crucible, air atmosphere; test 3, under nitrogen in closed crucible).

On visual control of the test item at 140°C in the open aluminum crucible during test 2 the test item was melted. RecrystalIization was observed in the cool down measurement of this

test during the isothermal time interval at 50°C. This confirms the supposition of a change of modification.

Decomposition was observed in all cases above about 250°C, resulting in a declining base line. The beginning of decomposition was found at about 260°C in test 1, at about 250°C in test

2 and at about 270°C in test 3 (under nitrogen).