Registration Dossier
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EC number: 204-279-1 | CAS number: 118-82-1
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline Study under GLP
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Melting / freezing pt.:
- 156.4 °C
- Conclusions:
- The meaured melting temperature of the test substance is 429.6±0.1 K (156.4±0.1°C).
- Executive summary:
The melting temperature of the test substance was determined with the capillary method according to the OECD 102 Guideline for testing of chemicals and TNO Standard Operating Procedure Q 213-W-02 ‘Determination of the melting point/melting range’. The test substance (3 mm) was charged in a capillary tube and packed tightly. An Electrothermal IA 9200 melting point apparatus was used. The meaured melting temperature of the test substance is 429.6±0.1 K (156.4±0.1°C).
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Handbook
- Principles of method if other than guideline:
- No data provided on test method.
- GLP compliance:
- not specified
- Melting / freezing pt.:
- 154 °C
- Conclusions:
- Melting point: 154 ºC
- Executive summary:
Melting point: 154 ºC
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Handbook
- Principles of method if other than guideline:
- No data provided on test method.
- GLP compliance:
- not specified
- Melting / freezing pt.:
- 155 °C
- Conclusions:
- Melting point: 155 ºC
- Executive summary:
Melting point: 155 ºC
Referenceopen allclose all
Preliminary Test:
The capillary tube containing the
test substance was placed in the oven of the melting point apparatus,
which was heated at a heating rate of 1 K/min, starting at 418.2 K (145.0°C).
At a temperature of 428.8 K (155.6°C) the test
substance started to melt.
At a temperature of 429.7 K (156.5°C) the test substance was melted completely.
Test 1:
After heating the oven to 423.2 K (150.0°C), the capillary tube containing the test substance was placed in the oven of the melting point apparatus, which was heated at a rate of 0.5 K/min.
At a temperature of 428.6 K (155.4°C) the test substance started to crimp.
At a temperature of 428.8 K (155.6°C) the test substance started to collapse.
At a temperature of 429.0 K (155.8°C) the test substance started to liquefy.
At a temperature of 429.5 K (156.3°C) the test substance was melted completely.
Test 2:
After heating the oven to 423.2 K (150.0°C), the capillary tube containing the test substance was placed in the oven of the melting point apparatus, which was heated at a rate of 0.5 K/min.
At a temperature of 428.8 K (155.6°C) the test substance started to crimp.
At a temperature of 429.0 K (155.8°C) the test substance started to collapse.
At a temperature of 429.2 K (156.0°C) the test substance started to liquefy.
At a temperature of 429.7 K (156.5°C) the test substance was melted completely.
Results
The test substance has a melting temperature of 429.6±0.1 K (156.4±0.1°C).
Description of key information
The measured melting temperature of the test substance is 429.6±0.1 K (156.4±0.1°C).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 429.6 K
Additional information
The measured melting temperature of the test substance is 429.6±0.1 K (156.4±0.1°C). This is in agreement with handbook data giving melting temperatures between 154-155 ºC
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