2-benzylheptanol

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-10-26 to 2015-10-27

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/boiling range)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1998

Deviations:

no

GLP compliance:

no

Remarks:

The study was conducted under supervision of a quality assurance unit which had ensured e.g instrumentation validation, reagent/materials certification, analyst certification and providing standard operating procedures.

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

299.8 °C

Atm. press.:

1 013 hPa

Decomposition:

no

During the heating phase a small endothermic effect could be observed in the temperature range of approximately -80 to -60 °C, which cannot be assigned to the melting of the test item, due to the low energy of this effect. Therefore, the test item has no melting point down to -100 °C under atmospheric pressure. At room temperature, the test item is a liquid. The test item showed a second endothermic signal in the temperature range of 220 – 340 °C that can be associated with the boiling of the test item. For the correction of the boiling temperature to standard pressure the test item was assigned to chemical group 2 (e.g. Hydrocarbons). A correction value φ = 5.15 was used for the temperature range from 290 °C to 300 °C. The lowest measured onset temperature is corrected to the standard pressure to be 299.29 °C and the highest onset temperature to be 300.22 °C. As the corrected onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 299.76 °C, the test item has a boiling point of 299.8 °C. No further thermal effects were observed up to the test end temperature of 500 °C.

Conclusions:

The boiling point of the test substance was determined to be 299.8 °C at 1013 hPa.

Executive summary:

A study was conducted according to OECD test guideline 103, Regulation (EC) No 440/2008 method A.2 and EPA OCSPP test guideline 830.7220 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 18 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. The substance is a liquid at ambient conditions. Therefore the crucibles were cooled down from ambient temperature to -100 °C with a constant cooling rate of 0.25 K/min under an inert atmosphere. After a waiting period of 30 min at -100 °C, the temperature was increased up to 500 °C at a constant heating rate of 10 K/min. Between approx. 220 – 340 °C an endothermic effect (boiling) was detected. The correction of the boiling temperature to standard pressure was performed according to H.N. Hass and R.F. Newton. The lowest measured onset temperature is corrected to the standard pressure to be 299.29 °C and the highest onset temperature to be 300.22 °C. The corrected onset temperatures in both tests deviate no more than 0.5 K from their mean value of 299.76 °C. Thus a boiling point at 299.8 °C of the test item was determined. No further thermal effects were observed up to the maximum test temperature of 500 °C. No observations were made which cause doubt on the validity of the outcome of the study.

Description of key information

The boiling point of the test substance was determined to be 299.8 °C at 1013 hPa.

 

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

299.8 °C

Additional information

A study was conducted according to OECD test guideline 103, Regulation (EC) No 440/2008 method A.2 and EPA OCSPP test guideline 830.7220 to determine the boiling point of the test item using differential scanning calorimetry. Two tests with about 18 mg of the test item were performed. The substance is a liquid at ambient conditions. Therefore the crucibles were cooled down to -100 °C and later the temperature was increased up to 500 °C. Between approx. 220 – 340 °C an endothermic effect (boiling) was detected. The lowest measured onset temperature is corrected to the standard pressure to be 299.29 °C and the highest onset temperature to be 300.22 °C. Thus a boiling point at 299.8 °C of the test item was determined. No further thermal effects were observed up to the maximum test temperature of 500 °C.