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Physical & Chemical properties

Boiling point

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Administrative data

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012-07-17 to 2012-10-16
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point/Boiling Range)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
The test material is in a white powder form.
Key result
Boiling pt.:
210 °C
Decomposition:
yes
Decomp. temp.:
> 295 - < 305 °C

Individual Results


TBoiling Point / Boiling Range (DSC)
The measurements in aluminium crucibles with a hole showed an endothermal effect in the temperature range of 105 - 135°C (melting) and a broad endothermal effect in the temperature range of approximately 170 - 320°C. According to the results of the thermal stability the test item decomposed starting at a temperature of 210°C. An additional measurement with the capillary method was performed in order to clarify the results of the DSC measurements.






















No.



Set oint



Heating rate



End oint



Boiling oint/ran e



Remarks



1



o


150 c



5 K/min



o


320 c



 



232oc: development of slowly bubbles,


250o c: test item yellow, 260oc: test item light brown,


270oc: the test item brown,


290oc: test item dark brown, faster bubbles,


295-305o c: fast continuous bubbles, test item black


310oc: slowly bubbles.



 


Due to the results of the capillary method it can be concluded that the test item boiled under decomposition in the temperature range of 295 — 305oC.


Graphical representations of the DSC runs No. 33048 and No. 33051 are shown on Figure 2.


 


Final Results


The test item Desmedipham (AE B038107), pure substance, showed an endothermal effect in the temperature range of 105-140°C and an exothermal effect in the temperature range of 210 - 395°C with an energy of 246 J/g and 260 J/g, respectively.


 


Boiling Point
The test item boiled under decomposition in the temperature range of 295 - 305°C

Conclusions:
Test item boiled under decomposition in the temperature range of 295 to 305 °C.
Executive summary:

The boiling point of the test item was determined according to the following guidelines: European Commission Regulation (EC) No. 440/2008, Part A, Methods for the determination of physico-chemical properties, A.2. Boiling point / boiling range; OECD test guidelines: OECD 103 (1995) Boiling point / boiling range.


The test item Desmedipham (AE B038107), pure substance, showed an endothermal effect in the temperature range of 105-140°C and an exothermal effect in the temperature range of 210 - 395°C with an energy of 246 J/g and 260 J/g, respectively. The test item boiled under decomposition in the temperature range of 295 - 305°C.

Description of key information

Boiled under decomposition between 295 and 305°C

Key value for chemical safety assessment

Additional information