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Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 103 (Boiling Point)
according to guideline
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Melting began during decomposition (indicated by a darkening in colour), starting at 132 °C and ending at 133 °C.
Decomp. temp.:
ca. 132 °C
Remarks on result:
other: The test item changed from brown, to dark brown, to black over the temperature range 132 °C to 320 °C.

Results of pre test:



Test item in aluminium block

23.8 °C

Melting began under decomposition, colour

was darker

132 °C


Melting end under decomposition, colour

was darker

133 °C

After melting, colour brown

137 °C

Colour a bit darker

240 °C

Colour strong darker

319 °C

Colour dark brown nearly to black

320 °C

Heating up to 390 °C as the test item was black. The test item decomposed.


In the pre-test, the test item showed signs of decomposition during melting process indicated by colour change.

The determination of melting and boiling point of the test item AF-317 could not be determined because of decomposition during melting process.

Description of key information

No boiling observed, decomposition started at 132 °C (OECD 103, pre-test, capillary tube)

Key value for chemical safety assessment

Additional information