Triethoxy(phenyl)silane

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:

06-Jun-2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

GLP compliance:

no

Type of method:

thermal analysis

Remarks:

Differential Scanning Calorimetry

Melting / freezing pt.:

< -100 °C

Melting / freezing pt.:

< 173 K

Details:

 

The DSC diagrams show no melting/freezing temperature above –100°C.

 

Test	Melting temperature
1	<-100 °C
2	< -100 °C
Mean value	< -100 °C, < 173K

 

Conclusions:

A melting point of < -100°C (173 K) was determined in a reliable study conducted according to an appropriate test protocol. It was not conducted according to GLP.

Reference 2

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

28 Apr 2011

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

1.4.4.2 / 1.6.4.2

GLP compliance:

not specified

Type of method:

thermal analysis

Remarks:

Differential Scanning Calorimetry

Melting / freezing pt.:

-53.5

Remarks on result:

other: if cooling to a temperature below -100°C (173K)

Results:

The DSC diagrams show an exothermic process beginning at about -95°C (approximately 178K). This can be interpreted as a kind of crystallization process, so that a solid phase results.

The solid phase melts with an endothermic reaction and an onset temperature at -53.5°C (219.7K).

Conclusions:

A melting point of -53.5°C was determined in a reliable study conducted according to an appropriate test protocol. It was not conducted according to GLP.

Description of key information

<-100°C at 1013 hPa (measured)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-100 °C

Additional information

A melting point value of <-100°C was determined by differential scanning calorimetry according to OECD test guideline 102. This is supported by measured values of -53.5°C obtained from another study and <-50°C obtained from a secondary source (company data).The supporting results are in good agreement with the key study.