1-(N,N-bis(2-ethylhexyl)aminomethyl)-1,2,4-triazole

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1985

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

GLP compliance:

yes

Type of method:

method according to Siwoloboff

Key result

Decomposition:

yes

Decomp. temp.:

> 220 - < 250 °C

Boiling pt.:

109 °C

Atm. press.:

11 Pa

Remarks on result:

other: Heat of evaporation= 82.9kJ/mol, measured by Thermogravimetry

Boiling pt.:

314.85 °C

Atm. press.:

1 013 hPa

Remarks on result:

other: Extrapolated using measured data by Thermogravimetry

The determination of boiling point according to Siwoloboff was impossible, because of decomposition of the substance in the temperature region 220 - 250°C.

Observation during the determination:

1) Temperature region 25 - 242°C with heating rate ca. 17 K/min: change of color at about 220°C (colorless to yellow)

2) Temperature region 242 - 248°C with heating rate 0.5 K/min: substance has brown color and is turbid

3) Temperature region 248 - 250°C with heating rate 0.5 K/min: beginning of separation of brown, dark drops in the liquid

Evolution of gas can be seen in the temperature region above 242°C.

Conclusions:

The test substance decomposes at >220°C before boiling

Description of key information

Decomposed at >220°C before boiling

Extrapolated 315°C at 1013 hPa for use in CSA

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

314.85 °C

Temperature of decomposition (state purity):

220 °C

Additional information

The determination of boiling point according to Siwoloboff was not possible because of decomposition of the substance in the temperature region 220 - 250°C.

The boiling point was extrapolated using vapour pressure data measured by Thermogravimetry