N-[4-(2',7'-ditert-butyl-9,9'-spirobi[fluorene]-2-yl)phenyl]-9,9-dimethyl-N-(2-phenylphenyl)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:

25.07.-22.08.2019

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

Atm. press.:

ca. 1 013.25 hPa

Decomposition:

yes

Decomp. temp.:

490 °C

Remarks on result:

not determinable

Remarks:

At the end of the measurement at 550 'C the test item was decomposed.

The DSC measurements showed an endothermal effect after phase transitions in the temperature range of 460 - 550 °C with an onset temperatures of 487.72 °C. The onset temperature (see Table 1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline. No further endothermic or exothermic effects were observed up to the final temperature (550°C). The mass loss after the DSC measurements amounted to 28%.

DSC Measurement

Ident No.	Test item / mg	Starting temperature / °C	Final test temperature / °C	Temperature range (endothermal) / °C	Crucible	Observation after the measurement
38757	7.42	25	550	470 - 550	Aluminium with a hole	Test item was a black residue, mass loss 28%

The test item had no boiling point under atmospheric conditions up to 470°C (aftenrwards the course of the measurement become ambiguous). At the end of the measurement at 550 °C the test item was

decomposed.

Conclusions:

The test item had no boiling point under atmospheric conditions up to 470°C (afterwards the course of the measurement became ambiguous).

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 up to 470°C (afterwards the course of the measurement become ambiguous).

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.