Registration Dossier
Registration Dossier
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EC number: 204-393-1 | CAS number: 120-40-1
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:
- 18 June 2012 to 20 August 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Remarks:
- OECD GLP
- Type of method:
- other: Differential scanning calorimetry (DSC)
- Melting / freezing pt.:
- 45 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 250 °C
- Conclusions:
- Under the test conditions, the test substance was determined to have a melting point of 45 °C.
- Executive summary:
A study was conducted to determine the melting point of amides, C12, N,N-bis(2-hydroxyethyl) using differential scanning calorimetry (DSC) according to the OECD 102, EU A.1 and US EPA 830.7200 guidelines. Under the test conditions, the melting point was determined to be 45°C or 318 K.
Reference
Results:
Pre-liminary study:
From 250°C upwards the weight of the sample decreased significantly. At 346°C the sample weight had decreased by 25%. After the experiment, a brown molten residue remained in the sample container (original colour: off-white). The change of the colour indicated reaction and/or decomposition of the test substance.
Main study:
Based on the results of experiment I, an endothermic peak between 25°C and 75°C was observed. The extrapolated onset temperature of the peak was 45.31°C. The effect was most likely obtained due to melting of the test substance. An exothermic peak between 250°C and 375°C was observed. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a brown molten residue remained in the sample container.
To investigate the melting peak between 25°C and 75°C, experiment II was stopped directly after the effect. The extrapolated onset temperature of the melting peak was 44.79°C. After the experiment, a colourless molten residue remained in the sample container. It indicated that the effect was due to melting of the test substance.
Description of key information
The melting point was determined using differential scanning calorimetry (DSC) according to OECD Guideline 102, EU Method A.1 and US EPA 830.7200 Guidelines (Baltussen, 2012).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 45 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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