Phenol, 4-methyl-, reaction products with dicyclopentadiene and isobutylene

Melting point / freezing point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

autumn 1996

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study has been performed according to OECD and/or EC guidelines, and according to GLP principles.

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes

Type of method:

capillary method

Melting / freezing pt.:

ca. 118 °C

Remarks on result:

other: initial wetting point

The test substance was ground prior to the test to facilitate loading of the capillary tube. After grinding the test substance was a pale yellow solid. On melting the test substance was found to form an amber resinous liquid, and stick to the sides of the capillary tube. Therefore, it was not possible to observe all five stages of melting, although it was possible to observe the wet point (stage A, see attached background material).

After cooling an amber resinous solid was seen in the capillary tube. The change in form and colour was permanent, and so there may have been sample decomposition.

Conclusions:

The full melting range of Wingstay L-HLS was not determined because the test substance attached to the walls of the capillary tube on melting. The initial wetting point was determined as 118.3 degr C (391.5 K), with possible sample decomposition.

Reference 2

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

April 2010

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: non-GLP test with lack of information on test substance and experimental conditions

Qualifier:

no guideline followed

Principles of method if other than guideline:

test was performed in air instead of under nitrogen atmosphere

GLP compliance:

no

Type of method:

other: differential scanning calorimetry

Melting / freezing pt.:

ca. 96 °C

Remarks on result:

other: glass transition point (onset temperature)

Conclusions:

Under the experimental conditions, a glass transition was observed at about 96 degr C and no clear melting effect.

Description of key information

1 GLP study and some company-owned information was used to cover this endpoint.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

118 °C

Additional information

According to the GLP study, the test substance in flake-form (Wingstay L-HLS) had an initial wetting point of 118 degr C. According to company-owned information of Lowinox CPL in powder-form, a distinct melting temperature was not observed. In this case, however, a glass transition at ca 96 degr C was observed.