Registration Dossier
Registration Dossier
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EC number: 208-341-9 | CAS number: 523-24-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was conducted between 27 July 2005 and 05 August 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- Diammonium phthalate
- EC Number:
- 208-341-9
- EC Name:
- Diammonium phthalate
- Cas Number:
- 523-24-0
- Molecular formula:
- C8H6O4.2H3N
- IUPAC Name:
- diammonium phthalate
- Test material form:
- solid: crystalline
Constituent 1
- Specific details on test material used for the study:
- Description: white crystalline solid
Lot number: 4172005
Date recieved: 02 June 2005
Storage conditions: room temperature, in the dark
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
Any other information on results incl. tables
Summary of results:
Run |
Log10[Vp(25°C)] |
1 |
-3.876 |
2 |
-4.029 |
3 |
-3.890 |
4 |
-3.895 |
5 |
-3.706 |
6 |
-3.924 |
Mean |
-3.887 |
Vapour pressure |
1.3 x 10-4 Pa |
The test material did not change in appearance under the conditions used in the determination
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the test material has been determined to be 0.00013 Pa at 25 °C.
- Executive summary:
The vapour pressure was determined using a vapour pressure balance with measurements being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 25°C.
The vapour pressure of the test material has been determined to be 1.3 x 10-4 Pa at 25 °C.
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