Registration Dossier
Registration Dossier
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EC number: 204-820-1 | CAS number: 127-06-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- no
- Type of method:
- dynamic method
Test material
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 2.4 hPa
- Remarks on result:
- other: calculated from the regression equation
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 3.575 hPa
- Remarks on result:
- other: calculated from the regression equation
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 20.367 hPa
- Remarks on result:
- other: calculated from the regression equation
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
- Vapour pressure:
- 20.367 hPa
- Remarks on result:
- other: calculated from the regression equation
Any other information on results incl. tables
Results
Temperature [°C] | Vapour pressure (measurement) [hPa] | Vapour pressure (calculation) b) [hPa] | Aberration [%] |
79.93 | 106.5 | 106.5 | 0.0 |
93.42 | 199.8 | 199.9 | -0.0 |
109.95 | 399.7 | 400.0 | -0.1 |
120.50 | 600.1 | 599.1 | 0.2 |
128.55 | 800.2 | 800.6 | -0.0 |
135.60 | 1019.5 | 1019.8 | -0.0 |
135.4 | --- | 1013.25 | --- |
The regression of the results leads with a mean deviation of 0.07 % to the following equation:
ln(p/hPa) = 10.8448 - 3489.81 / (186.78 + t/°C)
The vapour pressure at 20 °C, 25 °C and 50°C was calculated from the regression equation.
The normal boiling temperature was obtained by intrapolation/extrapolation from the vapour pressure curve.
Applicant's summary and conclusion
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.
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