Registration Dossier
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EC number: 270-171-6 | CAS number: 68412-15-7
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017-06-06 to 2017-06-06
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 103 Boiling point
- Version / remarks:
- 1995-07-27
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 79 - <= 81 °C
- Atm. press.:
- 991 hPa
- Conclusions:
- The melting point of Octadecanoic Acid, reaction products with triethylenetetramine was determined to be in a range of 79 to 81 °C, using differential scanning calorimetry.
- Executive summary:
A study on differential scanning calorimetry according to OECD Guideline 103 (27 July 1995) was conducted with Octadecanoic Acid, reaction products with triethylenetetramine.
The heating phase covered a range from room temperature to 500 °C. During the heating phase an endothermic effect was observed in the temperature range of 50– 130 °C, which can be assigned to the melting of the test item. In the temperature range of 230 – 450 °C an exothermic effect with a decomposition energy of approx. -1230 J/g, directly followed by an endothermic effect in the temperature range of 450 – 490 °C was observed.
Melting of Octadecanoic Acid, reaction products with triethylenetetramine was observed in a range of 79 to 81 °C.
Reference
Results of the DSC-measurements:
DSC run No. |
Sample weight / mg |
Onset of Effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
PN13507 |
12.20 |
78.81 - - - - - - |
60 - 130 (endo) 240 - 450 (exo) 450 - 490 (endo) |
11.68 |
991.0 |
PN13509 |
10.16 |
81.34 - - - - - - |
50 - 130 (endo) 230 - 450 (exo) 450 – 490 (endo) |
9.70 |
991.0 |
Description of key information
A study on differential scanning calorimetry according to OECD Guideline 103 (27 July 1995) was conducted with Octadecanoic acid, reaction products with triethylenetetramine.
The heating phase covered a range from room temperature to 500 °C. During the heating phase an endothermic effect was observed in the temperature range of 50– 130 °C, which can be assigned to the melting of the test item. In the temperature range of 230 – 450 °C an exothermic effect with a decomposition energy of approx. -1230 J/g, directly followed by an endothermic effect in the temperature range of 450 – 490 °C was observed.
Melting of Octadecanoic acid, reaction products with triethylenetetramine was observed in a range of 79 to 81 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 81 °C
Additional information
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