1-Ethoxy-2,3-difluoro-4-[trans-4-(trans-4-propylcyclohexyl)-cyclohexyl]-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:

2007-04-03 to 2007-05-03

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

>= 399 - <= 415 °C

Atm. press.:

1 013.3 hPa

Decomposition:

no

Thermal stability

The DSC mearurement in a a closed glass crucible showed two endothermic effects (melting) in the temperature ranges 50-60 °C and 80-100 °C no exothermic effect until 400 °C was observed.

 

Boiling point / boiling range

The DSC measurements with a heating rate of 10 K/min showed an endothermal effect in the temperature range of 360-470 °C with an onset temperature of approx. 407 °C.

 

Boiling point (DSC measurements) 

Ident No.	Onset / °C	Temperature range / °C	Crucible
25754	408.51	360-450	Aluminium with a hole
25756	398.52	360-470	Aluminium with a hole
25762	414.52	360-460	Aluminium with a hole

  

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
25754	408.51	1007	5.377	0.3385	408.85
25756	398.52	1007	5.357	0.3348	398.85
25762	414.52	1005	5.389	0.4509	414.97

The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 399 °C to 415 °C.

Conclusions:

The boiling range of the test item at atmospheric pressure (1013.3 hPa) was determined to be 399 °C to 415 °C.

Executive summary:

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry (DSC 25 -500 °C). The test item and the reference were heated up from the starting temperature to the final temperature at a constant heating rate 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. No decomposition was observed. The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 399 °C to 415 °C.

Description of key information

The boiling range of the test item at atmospheric pressure (1013.3 hPa) was determined to be 399 °C to 415 °C.

Additional information

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry (DSC 25 -500 °C). The test item and the reference were heated up from the starting temperature to the final temperature at a constant heating rate 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. No decomposition was observed. The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 399 °C to 415 °C.