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EC number: 211-669-5 | CAS number: 683-10-3
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- In accordance with EU A1 Regulation (EC) No 440/2008, Annex, Official Journal of the European Union L142/1, melting point was measured by the Differential Scanning Calorimetry method (OECD Guidelines for The Testing of Chemicals, 102, July 27 1995).
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Sample:
Chemical Name Lauryl betaine
Physical State liquid - The sample was dried under a nitrogen purge to remove water prior to analysis.
CAS # 683-10-3
EU # 211-669-5
Manufacturer Colonial Chemical
Batch/lot # 53715J16
Received on November 22, 2016
Tested on January 31, 2017 - Key result
- Melting / freezing pt.:
- >= -43.8 - <= -28.2 °C
- Decomposition:
- no
- Conclusions:
- A freezing point with an average of 245.0°K (-28.2°C) was evident in the sample. A melting point with an average onset of 229.4°K (-43.8°C) was evident on heating.
The melting point did not repeat well with a span of approximately 8°C between the replicates. This may be caused by non-homogeneity of the dried sample.
Reference
A freezing point with an average of 245.0°K (-28.2°C) was evident in the sample. A melting point with an average onset of 229.4°K (-43.8°C) was evident on heating. The melting point did not repeat well with a span of approximately 8°C between the replicates. This may be caused by non-homogeneity of the dried sample.
Description of key information
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -35.5 °C
Additional information
DSC analysis of the material, which had been dried under nitrogen prior to analysis since it was presented as an aqueous liquid, showed a range of freezing / melting temperatures. Freezing occurred at -28C and re-melting occurred at -43C. The average has been taken for this result.
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