Registration Dossier
Registration Dossier
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EC number: 211-694-1 | CAS number: 687-47-8
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:
- 2010-04-19 to 2010-08-12
- 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
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- - Trade name: Purasolv EL
- Batch number: 0909001195
- Appearance: Clear colourless liquid
- Purity: 99.83% w/w
- Storage: at room temperature, in the dark under nitrogen
- Expiry date: 2010-09-14 - Key result
- Melting / freezing pt.:
- -9 °C
- Conclusions:
- The melting temperature of ethyl (S)-lactate is -9 °C.
- Executive summary:
The melting temperature of ethyl (S)-lactate was determined by differential scanning calorimetry (DSC) in accordance with OECD guideline 102 and EU method A.1. The melting temperature of the test substance is -9 °C (264 K).
Reference
During the first and the second experiment, essentially the same results were obtained. For the experiment an internally scratched sample pan was used in order to facilitate crystallisation. Cooling showed a crystallisation peak between -60 °C and -40 °C. Melting of the test substance was observed between -20 °C and 20 °C with an extrapolated onset of -9.54 °C (first experiment) and -9.05 °C (second experiment). After the experiment, the test substance was visually unchanged.
Description of key information
The melting temperature of ethyl (S)-lactate was determined by differential scanning calorimetry (DSC) in accordance with OECD 102 and EU method A.1. The melting temperature of the test substance is -9 °C (264 K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -9 °C
Additional information
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