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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
9 September 2013 to 10 December 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
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
Principles of method if other than guideline:
The melting point of 3-aminophenol is determined.
GLP compliance:
not specified
Type of method:
capillary method
Specific details on test material used for the study:
- Name of test material: 3-aminophenol
- IUPAC name: 1-Hydroxy-3-amino-benzene
- Molecular weight: 109.127 g/mole
- Molecular formula: C6H7NO
- Smiles: c1c(cccc1O)N
- InChI: 1S/C6H7NO/c7-5-2-1-3-6(8)4-5/h1-4,8H,7H2
- Substance type: Organic
- Physical state: Solid Crystalline (white)
Key result
Melting / freezing pt.:
>= 116 - <= 122 °C
Decomposition:
no
Remarks on result:
other: no other details mentioned

The determination of the melting point was performed by visual judgement using the capillary method. In the preliminary test the test item started melting at 117 °C. The test item showed five stages of melting. The melting started at 116 °C. At 122 °C the last stage of melting was reached.

Conclusions:
The test item melted in the range of 116 °C to 122 °C (389 K to 395 K).
Executive summary:

The purpose of this study was to evaluate the melting point or melting range of the test item by the capillary method using an electronically controlled heating system, according to the A1 method and the OECD 102 guideline, and following the GLP. The determination of the melting point was performed by visual judgement using the capillary method. In the preliminary test the test item started melting at 117 °C. The test item showed five stages of melting. The melting started at 116 °C. At 122 °C the last stage of melting was reached.

Hence, the melting point was found in the range of 116 °C to 122 °C (389 K to 395 K).

Description of key information

The test item melted in the range of 116 °C to 122 °C (389 K to 395 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
122 °C

Additional information

The purpose of this study was to evaluate the melting point or melting range of the test item by the capillary method using an electronically controlled heating system, according to the A1 method and the OECD 102 guideline, and following the GLP. The determination of the melting point was performed by visual judgement using the capillary method. In the preliminary test the test item started melting at 117 °C. The test item showed five stages of melting. The melting started at 116 °C. At 122 °C the last stage of melting was reached. Hence, the melting point was found in the range of 116 °C to 122 °C (389 K to 395 K).

Other supporting data from reliable handbooks, publications and authoritative databases, also supported the selected key study and

exhibited the melting point of 3-aminophenol as 123°C, 122-123°C and 122 °C respectively.