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EC number: 202-977-0 | CAS number: 101-80-4
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:
- 13 April 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature. The initial and final melting temperatures were determined.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Specific details on test material used for the study:
- 4,4'-oxydianiline
4,4'-diaminodiphenyl ether
CAS 101-80-4 - Key result
- Melting / freezing pt.:
- 191.5 °C
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: ± 0.05 °C (95% confidence interval). Atmospheric pressure was not reported, but is assumed to be standard pressure
- Conclusions:
- The substance is a relatively high melting point solid.
- Executive summary:
The melting point of the test item was found to be 191.5 ± 0.05 °C (95% confidence interval), i.e. 464.7 K.
Reference
Using a linear heating rate of 0.5 °C/min, the melting point of 4,4-Diaminodiphenylether was found to be 191.5 ± 0.05 °C (95% confidence interval), i.e. 464.7 K. Measured temperatures corresponding to the melting of 4,4-Diaminodiphenylether (three experiments (I, II, III) with three parallel samples each (1, 2, 3); the details are as summarised below:
Measured Temperatures during the Main Study (°C) |
|||||||||
I / 1 |
I / 2 |
I / 3 |
II / 1 |
II / 2 |
II / 3 |
III/ 1 |
III/ 2 |
III/ 3 |
Mean |
191.5 |
191.5 |
191.6 |
191.5 |
191.5 |
191.6 |
191.6 |
191.5 |
191.4 |
191.5 ± 0.05 |
Description of key information
The melting point of the substance 4,4'-Oxydianiline was determined according to the OECD Guideline 102 (Melting point / Melting Range), under GLP conditions.
The value obtained was 191.5 °C ± 0.05 °C or 464.7 K.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 191.5 °C
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