[trans(trans)]- 4-Methyl-4'-propyl-1,1'-bicyclohexyl

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21 Nov 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

no

GLP compliance:

no

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

302.3 °C

Atm. press.:

1 013 hPa

Decomposition:

no

Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 290 - 320 °C with onset temperatures of 302.06 °C and 302.88 °C, respectively. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass lass after the DSC measurements amounted to 100 %. After the DSC measurements (final test temperature 500 °C) the aluminium crucibles were empty.

The boiling point was corrected to the standard atmospheric pressure (1013.3 hPa) according to H.B. Hass and R.F. newton in “CRC Handbook of Chemistry and Physics, 74^thed. 1993-1994”. The test item was classified in group 2 (hydrocarbons) for the estimation of the respectful parameters.

Δt = (273.15 + t) * (3.0057 – logp) /Φ+ 0.15 * (3.0057 – logp)

t – temperature in °C

p – pressure in hPa

 

Table 2. Correction of the boiling point to standard atmospheric pressure

Ident No.	Onset / °C	Ambient pressure / hPa	Φ (Group 2)	Δt / °C	Boiling point at 1013.3 hPa / °C
34754	302.06	1016.1	5.163	-0.14	301.92
34756	302.88	1015.6	5.165	-0.11	302.77

 

The test item had a mean boiling point at atmospheric pressure (1013.3 hPa) of 302.3 °C.

Conclusions:

The test item boiling point was determined to be 302.3 °C at 1013.3 hPa.

Executive summary:

A study was conducted according to OECD TG 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 9 – 11 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used.

Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 290 - 320 °C with onset temperatures of 302.06 °C and 302.88 °C, respectively. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass lass after the DSC measurements amounted to 100 %. After the DSC measurements (final test temperature 500 °C) the aluminium crucibles were empty.

The correction of the boiling temperature to standard pressure was performed according to H.N. Hass and R.F. Newton. The test item boiling point was determined to be 302.3 °C at 1013.3 hPa.

Description of key information

The test item boiling point was determined to be 302.3 °C at 1013.3 hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

302.3 °C

Additional information

A study was conducted according to OECD TG 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 9 – 11 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used.

Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 290 - 320 °C with onset temperatures of 302.06 °C and 302.88 °C, respectively. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass lass after the DSC measurements amounted to 100 %. After the DSC measurements (final test temperature 500 °C) the aluminium crucibles were empty.

The correction of the boiling temperature to standard pressure was performed according to H.N. Hass and R.F. Newton. The test item boiling point was determined to be 302.3 °C at 1013.3 hPa.