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Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
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

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

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.

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