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EC number: 500-297-1 | CAS number: 109331-54-6
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:
- 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: Currenta internal method 2011-0343801-92D (DTA/DSC)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: Differential Thermal Analysis (DTA)/Differential Scanning Calorimetry (DSC)
- Decomposition:
- yes
- Remarks on result:
- other: There was no melting point detected between -100 °C up to 450 °C
- Conclusions:
- There was no melting point detected between -100 °C up to 450 °C.
- Executive summary:
The melting point was testet according to the differential scanning calorimetry method, which is equivalent with the European guideline method "EU Method A.1 (Melting / Freezing Temperature)". No melting point could be detected between -100 °C up to 450 °C and decomposition started at approx. 280 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 20/02/2019 - 28/03/2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- (EC) 440/2008
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- DSC method
- Specific details on test material used for the study:
- Test Item Name: MDI PIR (EC Number: 500-297-1)
Substance Name: 4,4'-Methylenediphenyl diisocyanate, oligomeric reaction products with 2,4'-diisocyanatodiphenylmethane
CAS Number: 109331-54-6
Batch/ Lot Number: H180957003
Description: colourless to yellowish liquid
Expiry date: 10/06/2019 storage at room RT - Remarks on result:
- not determinable
- Remarks:
- The freezing point/ crystallization point of the test item could not be determined.
- Conclusions:
- A sample of the test item was kept at -24°C for 47 hours. The sample appeared to have transitioned to a clear, yellowish solid. However, after closer inspection it was found that the sample had not fully solidified. Additional testing was therefore attempted using the DSC method (see next section).
DSC method:
A minor endothermic event was observed but this is likely to be due to prolonged equilibration of the base line or possibly softening. The freezing point/ crystallization point of the test item could not be determined. - Executive summary:
Test Objective and Information
The test is conducted to determine the temperature or temperature range of the phase transition from a liquid to a solid. The test also determines if the sample undergoes exothermic decomposition.
The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A.1 and OECD Test Guideline 102.
A minor endothermic event was observed but this is likely to be due to prolonged equilibration of the base line or possibly softening. The freezing point/ crystallization point of the test item could not be determined.
Referenceopen allclose all
A slight exothermal effect between approx. 175 °C and approx. 190 °C could be detected and
decomposition started at approx. 280 °C.
Comments
A minor endothermic event was observed but this is likely to be due to prolonged equilibration of the base line or possibly softening. The freezing point/ crystallization point of the test item could not be determined.
Description of key information
There was no melting point detected between -100 °C up to 450 °C according to OECD method 102.
Key value for chemical safety assessment
Additional information
Decomposition started at approx. 280 °C.
A slight exothermal effect between approx. 175 °C and approx. 190 °C could be detected.
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