N-[1,1'-Biphenyl]-2-yl-N-[1,1'-biphenyl]-4-yl-9,9'-spirobi[9H-fluoren]-2-amine

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

25.08.2016 - 19.12.2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

European Commission Regulation (EC) No. 440/2008,

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

Atm. press.:

ca. 1 013.25 hPa

Decomposition:

no

Remarks on result:

not determinable

Remarks:

no boiling point under atmospheric conditions

The DSC measurements in aluminium crucibles with a hole showed one endothermal effects after melting but no mass loss. The capillary measurements showed some small bubbles however much less than are observed in case of a boiling. The observed effect after melting could have been caused by an endothermal decomposition (without mass loss). Subsequently it was concluded that the test item had no boiling point under atmospheric conditions.

Table 1: Boiling Point (DSC measurement).

Ident No.	Test item /mg	Starting temperature / °C	Final test temperature / °C	Temperature range (boiling) / °C	Onset / °C	Crucible	Observations after the measurement
35809	10.60	25	500	110 - 165 190 - 250	multistage	Aluminium with a hole	Test item was a brown melt Mass loss 0%
35812	10.65	25	250	110 -170 190 - 230	multistage	Aluminium with a hole	Test item was a brown melt Mass loss 0%
35816	12.92	25	170	105 - 165	multistage	Aluminium with a hole	Test item was a brown melt Mass loss 0%

The test item had no boiling point under atmospheric conditions.

Conclusions:

The test item had no boiling point under atmospheric conditions.

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. 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  had no boiling point under atmospheric conditions.

Description of key information

The test item had no boiling point up to 400 °C under atmospheric conditions.

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.

The boiling point / boiling range was determined by differential scanning calorimetry (DSC). 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 had no boiling point up to 400 °C under atmospheric conditions.