Registration Dossier
Registration Dossier
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EC number: 221-070-0 | CAS number: 2997-92-4
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 24.02.-29.03.2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Temp.:
- 80 °C
- Vapour pressure:
- ca. 0 Pa
- Temp.:
- 90 °C
- Vapour pressure:
- ca. 0 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: calculated
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: calculated
- Transition / decomposition:
- yes
- Remarks:
- decomposition
- Transition temp.:
- > 100 °C
- Conclusions:
- The vapour pressure of 2,2'-azobis(2-amidinopropane)dihydrochloride is 7.20E-6 Pa at 20 °C and 9.77E-6 Pa at 25 °C.
- Executive summary:
The vapour pressure of 2,2'-azobis(2-amidinopropane)-dihydrochloride was determined following EU A.4 using the effusion method (weight loss).
Vapour pressure was examined at four different temperatures. Two temperatures could be evaluated as they showed significant and reproducible weight loss. For these temperatures, 1/t was plotted against log (P).
As only two temperatures could be evaluated, the graph 1/T vs. log (P) shows a straight line with a correlation coefficient of -1.0000.
For the test item 2,2'-azobis(2-amidinopropane)-dihydrochloride, the following vapour pressueres at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 7.20 * 10-6 Pa
Vapour pressure at 25 °C: 9.77 * 10-6 Pa
Reference
Description of key information
The vapour pressure of 2,2'-azobis(2-amidinopropane) dihydrochloride is 7.20E-6 Pa at 20 °C and 9.77E-6 Pa at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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