Registration Dossier
Registration Dossier
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EC number: 231-391-8 | CAS number: 7529-22-8
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:
- 2012-01-17
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 179 - 183 °C
- Atm. press.:
- 101.325 kPa
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: Pressure at which the measurements were taken was not reported; ambient conditions anticipated.
- Conclusions:
- The melting range of NMMO was determined to be 179-183 °C at ambient conditions.
- Executive summary:
The melting range of the test item was determined according to EU Method A.1. by applying the capillary method. The melting range of NMMO was determined to be 179–183 °C at ambient conditions.
Reference
Full test results:
| Run number | 1 | 2 |
| Mass of sample used (g) | 0.004 | 0.004 |
| Initial melting point (°C) | 179.3 | 180.9 |
| Final melting point (°C) | 182.5 | 182.9 |
Description of key information
The melting range of NMMO under ambient conditions was determined to be 179-183°C in a GLP study according to test method EC A.1, capillary method (Younis, 2012).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 179 °C
Additional information
For the chemical safety assessment the lower end value of the melting range (179°C) was taken as the key value.
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