1-Ethoxy-2,3-difluor-4-[4-(trans-4-propylcyclohexyl)-1-cyclohexen-1-yl]-benzene

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16.09.2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

398 °C

Atm. press.:

1 013.3 hPa

Decomposition:

no

Three measurements in aluminium crucibles with a hole showed an exothermal effect in the temperature range 80-127 °C followed by an endothermic effect in the temperature range 360 to 450 °C. The mass loss was complete. The onset temperature was derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline. 

  

For the correction Δt of the boiling point to standard atmospheric pressure (1013.3 hPa) the equation, table and graphs of H.B. Hass and R.F. Newton in „CRC Handbook of Chemistry and Physics, 74th ed. 1993-1994", pages 15-16 and 15-17 were used. 

Δt = [(273.15+t) (3.0057-log p)] / [Φ+ 0.15(3.0057-log p)]             (t in °C, p in hPa) 

For the estimation of Φthe test item was classified in group 2 (hydrocarbons) according to the table of 

H.B Hass and R.F. Newton. 

ldent.-No.	Onset / °C	Atmospheric pressure / hPa	Φ(group 2)	Δt / °C	Boiling point at 1013.3 hPa / °C
31126	400	1001	5.270	0.672	401
31127	394	1001	5.270	0.675	395
31130	397	1002	5.270	0.669	398

The mean boiling point of the test item corrected to the ambient atmospheric pressure of 1013.3 hPa is 398 °C.

Conclusions:

The mean boiling point of the test item corrected to the ambient atmospheric pressure of 1013.3 hPa was determined to be 398 °C.

Executive summary:

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2. The boiling point was determined by differential scanning calorimetry (DSC). The test item and the empty reference crucible were heated up from the starting temperature (ambient) to the final temperature (600 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Open crucibles were used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released was measured and recorded. Three measurements in aluminium crucibles with a hole showed an exothermal effect in the temperature range 80-127 °C followed by an endothermic effect in the temperature range 360 to 450 °C. The mass loss was complete. The mean boiling point of the test item corrected to the ambient atmospheric pressure of 1013.3 hPa was determined to be 398 °C.

Description of key information

The mean boiling point of the test item corrected to the ambient atmospheric pressure of 1013.3 hPa was determined to be 398 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

398 °C

Additional information

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2. The boiling point was determined by differential scanning calorimetry (DSC). The test item and the empty reference crucible were heated up from the starting temperature (ambient) to the final temperature (600 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Open crucibles were used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released was measured and recorded. Three measurements in aluminium crucibles with a hole showed an exothermal effect in the temperature range 80-127 °C followed by an endothermic effect in the temperature range 360 to 450 °C. The mass loss was complete. The mean boiling point of the test item corrected to the ambient atmospheric pressure of 1013.3 hPa was determined to be 398 °C.