Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
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:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to
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. certificate)
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

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

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. 

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

Additional information