Registration Dossier
Registration Dossier
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EC number: 807-935-0 | CAS number: 1244733-77-4
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:
- 04/2002
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method to determine freezing temperature
- Key result
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- The freezing point of TCPP is <-20°C.
- Executive summary:
The freezing point of TCPP was determined in according to EU Method A.1 (Melting / Freezing Temperature).
An aliquot of TCPP was placed into a test tube containing a thermometer. A wire loop with which the sample could be agitated was placed inside the tube to ensure sample homogeneity during cooling. The test tube was surrounded by a glass jacket and then placed into a large beaker containing a dry ice/acetone mixture. The temperature and observations of the test material were recorded approx. every 30 seconds. The dry ice/acetone bath was maintained until the temperature had reached approx. -20°C.
Reference
Pressure not reported, but it is assumed that the result related to ambient pressure.
The test material become increasingly viscous during cooling.
Description of key information
The freezing point of TCPP substance is <-20°C, using the Method for Determination of Crystallizing Point (EU-A.1).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -20 °C
Additional information
Should be read as < -20 °C
The freezing point of TCPP was determined in according to EU Method A.1 (Melting / Freezing Temperature).
An aliquot of TCPP was placed into a test tube containing a thermometer. A wire loop with which the sample could be agitated was placed inside the tube to ensure sample homogeneity during cooling. The test tube was surrounded by a glass jacket and then placed into a large beaker containing a dry ice/acetone mixture. The temperature and observations of the test material were recorded approx. every 30 seconds. The dry ice/acetone bath was maintained until the temperature had reached approx. -20°C.
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