Registration Dossier
Registration Dossier
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EC number: 203-247-4 | CAS number: 104-88-1
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
- Principles of method if other than guideline:
- The sample is slowly cooled to about 3 -5 °C below the expected freezing point by stirring a thermometer in a cooling bath. Crystallisation is then triggered either by rubbing with the thermometer at the test-tube wall or by inoculation. The seed crystals are evenly distributed in the sample by stirring intensely for a short period. After initialisation of crystallisation, the thermometer is only slowly moved up and down without touching the test-tube wall until the highest temperature is reached. The highest temperature is recorded, accurate to 0.1 °C, and is given as the freezing point. Temperature correction, if given in calibration certificates, is accounted for.
- Type of method:
- method to determine freezing temperature
Test material
- Reference substance name:
- 4-chlorobenzaldehyde
- EC Number:
- 203-247-4
- EC Name:
- 4-chlorobenzaldehyde
- Cas Number:
- 104-88-1
- Molecular formula:
- C7H5ClO
- IUPAC Name:
- 4-chlorobenzaldehyde
- Details on test material:
- Lot-No. DEBR009603
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 47.1 °C
- Remarks on result:
- other: Freezing point
Applicant's summary and conclusion
- Conclusions:
- The freezing point of the test item is 47.1 °C
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