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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 21, 2018 - February 22, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
> 265 °C

The first DSC measurement in an aluminium crucible with a hole showed an endothermal effect in the temperature range of 75 – 215 °C, followed by an exothermal effect (265 – 450 °C). After the measurement the test item was a black residue. The mass loss after the DSC measurement amounted to 40 %. The second DSC measurement in an aluminium crucible with a hole showed an endothermal effect in the temperature range of 85 – 215 °C. The measurement was terminated at 250 °C, before the exothermal effect in the first measurement. The mass loss after the DSC measurement amounted to 12 %. The results of the DSC measurements are summarized inTable1.

Table1: DSC measurements

Ident No.

Test item /

mg

Starting temperature /

°C

Final test temperature /

°C

Temperature range /

°C

Crucible

Observations after the measurement

36832

17.16

25

500

75 – 215

(endothermal)

265 – 450
(exothermal)

Aluminium with a hole

Black residue after measurement; mass loss: 40 %

36833

18.25

25

250

85 – 215 (endothermal)

Aluminium with a hole

Test item was red powder after measurement, mass loss: 12 %

The mass loss in the second measurement corresponds to the water content of the test item. Hence, the endothermal effect may be, inter alia, attributed to the evaporation of water. Under consideration of the results from the DSC measurements it was concluded that the test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 265 °C.

Executive summary:

The test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 265 °C.

Description of key information

The test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 265 °C.

Key value for chemical safety assessment

Additional information