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EC number: 500-446-0 | CAS number: 160901-09-7 1 - 2.5 moles ethoxylated
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:
- 04-12 Apr 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Principles of method if other than guideline:
- The test is conducted to determine the temperature or temperature range of the phase transition from a liquid to a solid.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method to determine freezing temperature
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- 1 013 hPa
Reference
Full test results
Run Number |
1 |
2 |
Mass of sample Used (g) |
10.2 10.2 |
10.2 10.2 |
Initial Freezing Temp (°C) |
N/A N/A |
N/A N/A |
Final Freezing Temp (°C) |
N/A N/A |
N/A N/A |
The sample appears viscous and oily at ambient conditions. During the freezing point determination, the sample turns cloudy around 12 °C. However due to the chemistry of the specimen (oily) the cloudy appearance was not attributed to crystallization. On further cooling, the flow of the sample was found to have stopped at -13.1 °C (Pour point). When the procedure was repeated, flow restriction of the sample surface was observed at -13.0 °C. Because no crystallisation was observed down to -20 °C in both runs, the test was terminated.
Description of key information
<-20 °C (EU Method A.1)
Key value for chemical safety assessment
Additional information
The melting/freezing point of the substance was determined according to EU Method A.1 using a freezing temperature devices with liquid (cooling) bath and a calibrated, digital thermocouple system.
During the freezing point determination, the sample turns cloudy around 12 °C. However due to the chemistry of the specimen (oily) the cloudy appearance was not attributed to crystallization. On further cooling, the flow of the sample was found to have stopped at -13.1 °C (Pour point). When the procedure was repeated, flow restriction of the sample surface was observed at -13.0 °C. Because no crystallisation was observed down to -20 °C in both runs, the test was terminated.
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