Registration Dossier
Registration Dossier
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EC number: 231-786-5 | CAS number: 7727-54-0
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- 2010-03-24
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: estimation only valid for organic substances
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- Regulation 440/2008/EC; Part A
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 1995
- Deviations:
- no
- Principles of method if other than guideline:
- The vapour pressure of diammonium persulfate was calculated by EPI Suite (v4.0). The preferred vapour pressure method for solids is the Modified Grain method (Lyman 1985).
- GLP compliance:
- not specified
- Type of method:
- other: calculation
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 mm Hg
- Remarks on result:
- other: estimation: 1.47E-23 mm Hg => 1.96E-21 Pa
- Key result
- Transition / decomposition:
- yes
- Transition temp.:
- ca. 120 °C
- Conclusions:
- The vapour pressure of diammonium persulfate at 25 °C was estimated to be 1.47E-23 mm Hg corresponding to 1.96E-21 Pa using the Modified Grain Method.
- Executive summary:
As the available experimental methods allow a determination of vapour pressure down to 1E-5 Pa only, no meaningful experimental determination of the vapour pressure for diammonium persulfate was possible.
Therefore, in accordance with the respective EC method A.4 (440/2008/EC) no experimental determination of the vapour pressure was required.
Reference
no remarks
Description of key information
The vapour pressure of diammonium persulfate at 25 °C was estimated at 1.47E-23 mm Hg corresponding to 1.96E-21 Pa using the Modified Grain Method of US EPA v4.0. For the risk assessment a vapour pressure of 1.0E-6 Pa at 25 °C will be used.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
As the available experimental methods allow a determination of vapour pressure down to 1E-5 Pa only, no meaningful experimental determination of the vapour pressure for diammonium persulfate was possible.
Therefore, in accordance with the respective EC method A.4 (440/2008/EC) no experimental determination of the vapour pressure was carried out. Notably, inorganic chemicals are outside of the EPIWIN (v4.0) domain. Nevertheless, the vapour pressure of diammonium persulfate is very low.
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