Propanenitrile, 3-[[4-[[5,6(or 6,7)-dichloro-2-benzothiazolyl]azo]phenyl]ethylamino]-

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

temperature of decomposition (state purity)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

September 08, 2021 - September 23, 2021

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:

EC No. 440/2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Decomposition:

yes

Decomp. temp.:

>= 190 °C

Remarks on result:

not determinable

Individual results:

Boiling point / boiling range: DSC measurement:

A measurement (see endpoint melting point) in aluminium crucibles with a hole showed no endothermal effect after the melting at 133 to 170°C up to a final temperature (500 °C). After melting the test item decomposed starting at approx. 200 °C.

Results of the capillary method

No.	Set point / °C	Heating rate / K/min	End point / °C	Remarks
1	120	1	200	136.7 °C: test item appeared wet Approx. 160 °C: half of the test item appeared melted 169.7 °C: red melt Approx. 190 °C: test item darkened to dark red
2	120	1	200	135.5 °C: test item started to melt 159.5 °C: half of the test item appeared melted 165.3 °C: red melt Approx. 190 °C: test item darkened to dark red
3	120	1	200	133.3 °C: test item started to melt 155.3 °C: half of the test item appeared melted 163.9 °C: red melt Approx. 190 °C: test item darkened to dark red

 

The test item had no boiling point under atmospheric conditions. Decomposition started at approx. 200 °C[1].

[1] Not valid as a study result on thermal stability

Conclusions:

The substance decomposes prior to boiling

Executive summary:

The boiling point of the test item was measured by DSC-measurements.

The test item Disperse Red 153 had a no boiling point according to European Commission Regulation (EC) No. 440/2008, A.2. as well as OECD 103 (1995).

Description of key information

The boiling point of the test item was measured by DSC-measurements.

The test item Disperse Red 153 has no boiling point according to European Commission Regulation (EC) No. 440/2008, A.2. as well as OECD 103 (1995).

Key value for chemical safety assessment

Temperature of decomposition (state purity):

190 °C

Additional information

The test item Disperse Red 153 has no boiling point, it discomposes prior to boiling.