Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 December 2011 - 3 April 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to OECD Guideline 103

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report Date:
2012

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Boiling point
Boiling pt.:
337 °C
Atm. press.:
1 010 hPa
Decomposition:
yes
Remarks on result:
other: Decomposes on boiling

Any other information on results incl. tables

There is an exothermic peak in the 325 to 345 °C region with mean onset 337°C (see 1 below). This exothermic peak is followed immediately by an endothermic one, indicating an overlap of decomposition and boiling. To confirm this interpretation, the boiling point was estimated with Syracuse software. The two major components, C16 (alkyl) and C18 (alkyl unsaturated) chains, were assumed as basis for the calculation. The predicted boiling range, 321 – 349 °C (see 2), corresponds to the peaks observed.

1) Boiling point test results

Measurement

Onset (°C)

Atmospheric pressure (hPa)

#1

336.8

1020

#2

336.8

1020

2) Estimated boiling point (Syracuse)

N,N-dimethyl-C16-alkyl-1-amine:                             320.7 °C

N,N-dimethyl-C18-alkyl-(unsaturated) -1-amine:       349.3

The mean onset (rounded to 337 °C) is selected as giving the best value of the boiling point.

Applicant's summary and conclusion

Conclusions:
The boiling point of the test item is 337 °C at 1020 hPa.
Executive summary:

The boiling point of the test substance was determined according to the OECD Guideline 103 using differential scanning calorimetry. At 1020 hPa, the boiling point is 337 °C.