Chlorodimethyloctadecylsilane

Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

(Q)SAR

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Justification for type of information:

QSAR prediction

Principles of method if other than guideline:

The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).

Type of method:

other: QSAR

Boiling pt.:

367 °C

Atm. press.:

101.3 kPa

Conclusions:

A boiling point value of 367°C at 101.3 kPa has been obtained for the test substance using an accepted calculation method. The result is considered reliable.

Reference 2

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02 Mar 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

no

Type of method:

photocell detection

Remarks:

capillary tube method

Boiling pt.:

340.3 °C

Atm. press.:

1 013 hPa

Remarks on result:

other: The atmospheric pressure is assumed to be normal.

Results

Results of boiling temperature evaluation

	Measured boiling temperature		Measured atmospheric pressure	Boiling temperature corrected to normal atmospheric pressure
	°C	K	kPa	°C	K
1	335.9	609.1	953	339.2	612.4
2	338.0	611.2	953	341.3	614.5
Mean value	337.0	610.2	953	340.3	613.5

 

In addition to the capillary tube method TG / DSC measurements were performed. The DSC diagram showed broad endothermic steps. The simultaneous TG showed a significant loss of weight in this range. It was not possible to detect a clear boiling temperature with this method. Therefore the values are taken from capillary tube / photocell detection method.

Conclusions:

A boiling point value of 340.3 °C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.

Description of key information

Chlorodimethyloctadecylsilane: 340.3°C at 1013 hPa (EU Method A.2)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

340.3 °C

Additional information

A boiling point value of 340.3°C at 1013 hPa was determined by capillary tube method (photocell detection) according to EU Method A.2. In a supporting study a boiling point value of 367 °C at 1013 hPa was obtained using an accepted calculation method (QSAR). The result is considered to be reliable.