Registration Dossier
Registration Dossier
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EC number: 269-915-2 | CAS number: 68390-97-6 This substance is identified by SDA Substance Name: C16-C18 alkyl dimethyl amine and SDA Reporting Number: 19-040-00.
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 December 2011 - 19 March 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Type of method:
- differential scanning calorimetry
- Boiling pt.:
- 321 °C
- Atm. press.:
- 1 001 hPa
- Decomposition:
- yes
- Remarks on result:
- other: Decomposes on boiling
- Conclusions:
- The boiling point of the test item is 321 °C at 1007 hPa.
- Executive summary:
The boiling point of the test substance was determined according to the OECD Guideline 103 using differential scanning calorimetry. At 1007 hPa, the boiling point is 321 °C.
Reference
No endothermic boiling peak is observed. There is an exothermic peak in the 320 to 380 °C region with mean onset 321 °C (see 1) below). This exothermic peak shows pronounced irregularities, indicating an overlap of decomposition and boiling.
To confirm this interpretation, the boiling point was estimated with Syracuse software. The two major components, C16 and C18 alkyl chains, were assumed as the basis for the calculation. The predicted boiling range, 321-346 °C (see 2) below), corresponds to the exothermic peak.
1) Boiling point test results
Measurement |
Onset (°C) |
Atmospheric pressure (hPa) |
#1 |
320.9 |
1007 |
#2 |
320.7 |
1007 |
2) Estimated boiling point (Syracuse)
N,N-dimethyl-C16-alkyl-1-amine: 320.7 °C
N,N-dimethyl-C18-alkyl-1-amine: 345.7 °C
The mean onset (rounded to 321 °C) is selected as giving the best value of the boiling point.
Description of key information
The boiling point of the test item is 321 °C at 1007 hPa.
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 321 °C
Additional information
The boiling point of the test substance was determined according to the OECD Guideline 103 using differential scanning calorimetry. At 1007 hPa, the boiling point is 321 °C.
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