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EC number: 249-894-6 | CAS number: 29857-13-4
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:
- 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline compliant well documented 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)
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- >= 197 °C
- Decomposition:
- yes
- Decomp. temp.:
- >= 197 °C
- Remarks on result:
- other: In the temperature range between about 40 °C and 160 °C the test item shows an endothermic effect. This effect is possibly evaporation of part components.
- Conclusions:
- decomposition at >= 197°C
melting point > 197 °C - Executive summary:
In the Klimisch 1 non-GLP study from Kintrup (2012) the melting point of Sulfosuccinic (isoFA C10)diE, Na was determined with the DSC method according to OECD 102 and EU method A.1. The test item did not show melting up to 197°C. Up to 197 °C the sample shows a weight loss of ca. 4-5 weight%. From 197 °C the test item shows most probably a thermal decomposition with melting and evaporation of the decomposition components. A vaporization of significant parts of the test item cannot be completely excluded.
In the temperature range between about 40 °C and 160 °C the test item shows an endothermic effect. This effect is possibly evaporation of part components. This effect is not the melting of the test item (main component) which was verified by a subsequent test with the Kofler-heating bank. The cooling runs show no crystallization.For the risk assessment a melting point of 197°C will be used.
This information is considered to be relevant and reliable for the further risk assessment.
Reference
The test item Sulfosuccinic (isoFA C10)diE, Na shows no melting of crystalline subcomponents up to 197 °C according to the definition in the OECD Guideline 102 (mean value from repeat determinations; 1st to 4th heating run).
· 198 °C (from first measurement)
· 198 °C (from second measurement)
· 195 °C (from third measurement)
Up to 197 °C the sample shows a weight loss of ca. 4-5 weight%. From 197 °C the test item shows most probably a thermal decomposition with melting and evaporation of the decomposition components. A vaporization of significant parts of the test item cannot be completely excluded.
In the temperature range between about 40 °C and 160 °C the test item shows an endothermic effect. This effect is possibly evaporation of part components. This effect is not the melting of the test item (main component) which was verified by a subsequent test with the Kofler-heating bank. The cooling runs show no crystallization.
The DSC measurements were confirmed by means of TGA measurement (up to 197 °C the sample shows a weight loss of ca. 4-5 weight%) under the same measurement conditions
Description of key information
melting point/decomposition: 197°C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 197 °C
Additional information
In the Klimisch 1 non-GLP study from Kintrup (2012) the melting point of Sulfosuccinic (isoFA C10)diE, Na was determined with the DSC method according to OECD 102 and EU method A.1. The test item did not show melting up to 197°C.Up to 197 °C the sample shows a weight loss of ca. 4-5 weight%. From 197 °C the test item shows most probably a thermal decomposition with melting and evaporation of the decomposition components. A vaporization of significant parts of the test item cannot be completely excluded.
In the temperature range between about 40 °C and 160 °C the test item shows an endothermic effect. This effect is possibly evaporation of part components. This effect is not the melting of the test item (main component) which was verified by a subsequent test with the Kofler-heating bank. The cooling runs show no crystallization
For the risk assessment a melting point of 197°C will be used.
This information is considered to be relevant and reliable for the further risk assessment.
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