6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione

EC Number:

249-682-3

EC Name:

6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione

Cas Number:

29529-99-5

Molecular formula:

C11H20N4S2

IUPAC Name:

6-(dibutylamino)-1,3,5-triazine-2,4(1H,3H)-dithione

Test material form:

solid: particulate/powder

Results and discussion

Boiling point

Key result

Decomposition:

yes

Decomp. temp.:

ca. 200 °C

Remarks on result:

not determinable because of methodological limitations

Any other information on results incl. tables

1.1.1.   Boiling point / boiling range:DSC measurement

One DSC measurement in an aluminium crucible with a hole showed an endothermal effect after the melting in the temperature range of 200 – 290 °C. The mass loss after the DSC measurements amounted to 92 %.

The resultsof the DSC measurementsare summarized inTable1.

Table1: Boiling point (DSC measurement)

Ident No.	Test item / mg	Starting temperature / °C	Final test temperature / °C	Temperature range (endo-thermal) / °C	Onset  (boiling) / °C	Crucible	Observations after the measurement
36518	12.79	25	500	200 – 290	multi-stage	Aluminium with a hole	Black residue; mass loss:92 %

Graphical presentations of the DSC runs are shown on page7(Figure1).

An additional measurement with the capillary method was performed in order to clarify the boiling range.

 

1.1.2.   Boiling point / boiling range: capillary tube in a metal block

A measurement with the capillary method was performed to clarify the results of the DSC measurements. Since this measurement was performed only as a verifying screening a high heating rate of 10 K/min was chosen and therefore the absolute temperature values derived with the capillary method are not as accurate as the DSC results. The filling height of the test item was approximately 5 mm.

The results are summarized inTable2.

Table2: Results of the capillary method

No.	Set point / °C	Heating rate / K/min	End point / °C	Remarks
1	180	10	410	Approx. 180 °C: Test item appeared melted (clear, yellow) Approx. 200 °C: Beginning bubble formation, odour like hydrogen sulphide Approx. 210 °C: Increasing bubble formation Approx. 265 °C: Decreasing bubble formation, test item became darker Approx. 285 °C: Decreasing bubble formation, melt discoloured to amber Approx. 304 °C: Few bubbles, melt discoloured to brown Approx. 332 °C: Few bubbles, melt discoloured to dark brown Approx. 370 °C: No further bubble formation Approx. 285 °C: No further change

Applicant's summary and conclusion

Conclusions:

Under consideration of the results from the DSC measurement and the capillary method it was concluded that the test item started to decompose before boiling could occur. Decomposition started at approx. 200 °C.
The test item had no boiling point at atmospheric conditions.