Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 433-180-8 | CAS number: -
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1999-01-21 to 1999-01-21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP conform study according to a sufficiently documented and detailed study report (EU Method A1)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Remarks:
- differential scanning calorimetry (DSC)
Test material
- Details on test material:
- - Name of test material (as cited in study report): Reaktiv-Orange DYPR934
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- > 400 °C
- Decomp. temp.:
- 125 °C
- Remarks on result:
- other: The test substance shows no melting point in the temperature range 25-450 °C, only an exothermic decomposition beginning at 125 °C followed by a second one at 230 °C is observed."
Any other information on results incl. tables
No melting point in temperature range 25-450 °C, only exothermic decomposition beginning at 125 °C followed by a 2nd at 230 °C
Applicant's summary and conclusion
- Conclusions:
- The determination of the melting point by DSC was carried out in closed glass pan and aluminium pan.
The measurement in a closed glass pan does not show any endothermic effect prior a decomposition in the test substance in the range 125 -225 °C, with a decomposition energy of -192 j/g and 230 °-360 °C, with a decomposition energy of -306 j/g.
In an aluminium pan a spontaneous endothermic effect is observed at 140 °C followed by broad exothermic effect.
This may be caused by a reaction of the test substance with the aluminium. Therefore the measurements on the aluminium pan were not considered for the evaluation.
No melting point in temperature range 25-450 °C, only exothermic decomposition beginning at 125 °C followed by a 2nd at 230 °C - Executive summary:
The determination of the melting point by DSC was carried out in closed glass pan and aluminium pan.
The measurement in a closed glass pan does not show any endothermic effect prior a decomposition in the test substance in the range 125 -225 °C, with a decomposition energy of -192 J/g and 230-360 °C, with a decomposition energy of -306 J/g.
In an aluminium pan a spontaneous endothermic effect is observed at 140 °C followed by broad exothermic effect.
This may be caused by a reaction of the test substance with the aluminium. Therefore the measurements on the aluminium pan were not considered for the evaluation.
No melting point in temperature range 25-450 °C, only exothermic decomposition beginning at 125 °C followed by a 2nd at 230 °C
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
