2,6-Octadienal, 3,7-dimethyl-, acid-isomerized

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-10-28 to 2016-11-01

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same 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:

no

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

>= 108 - <= 111 °C

Atm. press.:

1 013 hPa

Remarks on result:

other: corrected to normal atmospheric pressure

In the temperature range of 10 - 330 °C an endothermic effect (boiling) was observed. No further thermal effects were observed up to the test end temperature of 500 °C.

The results of 2 replicate measurements:

Replicate	Sample weight / mg	Onset of Effect /°C	Range of effect /°C	Weight loss / mg	Atmospheric pressure / hPa
1	16.19	108.51	10–330(endo)	16.19	1020.7
2	13.39	110.88	40–330(endo)	13.34	1016.7

During the heating phase the test item showed a very broad endothermic effect in the temperature range of approx. 10 - 330 °C that can be assigned to 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). According to appendix 8.2 a correction value φ = 4.75 was used for the temperature of 100 - 110 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 108.25 °C and the highest onset temperature to be 110.76 °C. As the corrected onset temperatures in both tests deviate more than 0.5 K from their mean value of 109.51 °C, the test item has a boiling range of 108 - 111 °C.

Conclusions:

The test item has a boiling range of 108 - 111 °C.

Executive summary:

The boiling point of the test item was determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).

During the heating phase the test item showed a very broad endothermic effect in the temperature range of approx. 10 - 330 °C that can be assigned to the boiling of the test item. The lowest measured onset temperature is corrected to the standard pressure to be 108.25 °C and the highest onset temperature to be 110.76 °C. As the corrected onset temperatures in both tests deviate more than 0.5 K from their mean value of 109.51 °C, the test item has a boiling range of 108 - 111 °C.

Description of key information

For this endpoint one experimental study is available, which has been conducted according to OECD 103, differential scanning calorimetry. The test item has a boiling range of 108 - 111 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

108 °C

Additional information

The boiling point was experimentally determined to be 108 - 111°C at atmospheric pressure (1013 hPa). As key value the lowest temperature from the range was selected: 108°C.