Registration Dossier
Registration Dossier
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EC number: 482-110-2 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
The testing of vapour pressure was not deemed to be scientifically necessary. Given the nature of the substance, vapour pressure is expected to be low.
Key value for chemical safety assessment
Additional information
Justification for data-waiving:
The test material is a crystaline salt and, as such, was expected to have a relatively low VP. This was supported by the absence of relevant reported VPs of related salts in a comprehensive search of the chemical literature. Reported VPs were found for simple amine salts above their melting points (> 190 °C), and for solid ammonium chloride at an elevated temperature of 91 °C (this VP was actually due to those of the thermal degradation products ammonia and HCl). These factors indicated that elevated temperatures would likely be required to observe the VP of the test material with sufficient accuracy. However, the test material was known to be thermally unstable, and it was likely that any measured VP would be due to the thermal degradation products of the test material (pentaethylguanidine, ethylene, and HCl).
Therefore, it was judged that the experimental determination of the VP of the test material would provide no useful information.
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