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

30.03.-14.06.2007

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

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

337 - 339 °C

Atm. press.:

1 013.3 hPa

Decomposition:

no

Boiling point / boiling range

Four DSC measurements showed an endothermic effect after melting in the temperature range of 300-380 °C with an onset temperature of approx. 337 °C.

 

Boiling point (DSC measurements) 

Ident No.	Onset / °C	Temperature range / °C	Crucible
25725	337.51	310-360	Aluminium with a hole
25732	338.81	310-360	Aluminium with a hole
26234	336.57	310-360	Aluminium with a hole
26235	337.48	310-360	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
25725	337.51	1003	5.235	0.5131	338.02
25732	338.81	1003	5.238	0.5139	339.32
26234	336.57	999	5.233	0.7146	337.28
26235	337.48	999	5.235	0.7154	338.20

 

An additional measurement with the capillary method was performed to clarify the results of the DSC measurements.

No.	Set point/°C	Heating rate/ K/min	Endpoint/ °C	Remarks
1	330	2 K/min	380	333 °C: isolated gas bubbles, 343 °C slow gas bubbles, 350 °C: rapid unsteady gas bubbles, 353 °C: very rapid continuous gas bubbles

The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 337-339 °C.

Conclusions:

The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 337-339 °C.

Executive summary:

A study was conducted according to OECD test guideline 103 to determine the boiling point of the test item using differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. 

The test item showed an endothermic effect after melting in the temperature range of 300-380 °C with an onset temperature of approx. 337 °C. An additional measurement with the capillary method was performed in order to clarify the boiling range. Under consideration of the results from the DSC measurements and the capillary method it was concluded that the test item had a boiling range at atmospheric pressure (1013.3 hPa) of 337-339 °C.

Description of key information

The test item had a boiling range at atmospheric pressure (1013.3 hPa) of 337-339 °C.

Additional information

A study was conducted according to OECD test guideline 103 to determine the boiling point of the test item using differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. 

The test item showed an endothermic effect after melting in the temperature range of 300-380 °C with an onset temperature of approx. 337 °C. An additional measurement with the capillary method was performed in order to clarify the boiling range. Under consideration of the results from the DSC measurements and the capillary method it was concluded that the test item had a boiling range at atmospheric pressure (1013.3 hPa) of 337-339 °C.