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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 477-690-9 | CAS number: 874819-71-3
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:
- 2005-09-22 - 2005-11-08
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The GLP study was conducted according to an internationally accepted guideline. All study parameters are based on the specific guideline.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 92/69/EWG, A.1 (DSC)
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Key result
- Atm. press.:
- 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- 195.4 °C
- Sublimation:
- no
- Conclusions:
- N-(2-Nitrophenyl)phosphoric triamide decomposes at 195.4 °C.
- Executive summary:
The melting point of N-(2-Nitrophenyl)phosphoric triamide was determined according to EU method A.1.
The test item is not thermally stable. It decomposed during the DSC analysis. The evaluation of the thermograms result in a decomposition temperature of the test item of 195.4 °C (onset temperature).
Reference
The DSC analysis was performed twice. According to the given information the temperature range for the investigation of the melting point was fixed in the range of about 30 °C. In each thermogram an endothermic signal followed by an exothermic signal was observed in the temperature range from 180 °C to 220 °C. The endothermic signals were evaluated and the following characteristic thermal data were determined.
run |
weight [mg] |
onset temperature [°C] |
peak maximum [°C] |
1 |
3.306 |
193.75 |
199.79 |
2 |
4.484 |
197.11 |
201.97 |
mean |
|
195.4 |
|
The thermal stability of the test item was checked by a second run after cooling down of the samples. The thermograms of this runs showed an endothermic signal with an onset temperature of 62.7 °C (both samples), shown in Figure 3 for the first sample. According to this fact and the signals in the first run it can be concluded that the test item isn’t thermally stable.
The evaluation of the thermograms result in a decomposition temperature of the test item of 195.4 °C (onset temperature).
Description of key information
The melting point of N-(2-Nitrophenyl)phosphoric triamide was determined according to EU method A.1. N-(2-Nitrophenyl)phosphoric triamide decomposes at 195.4 °C.
Key value for chemical safety assessment
Additional information
N-(2-Nitrophenyl)phosphoric triamide decomposes at 195.4 °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.
