Registration Dossier
Registration Dossier
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EC number: 469-300-0 | CAS number: 63675-73-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- June 2006 to Feb 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- -
- EC Number:
- 469-300-0
- EC Name:
- -
- Cas Number:
- 63675-73-0
- Molecular formula:
- Hill Empirical Formula: C16H16O3S CAS Empirical Formula: C16H16O3S
- IUPAC Name:
- 1-(4-methoxyphenyl)-2-[(3-methoxyphenyl)sulfanyl]ethan-1-one
- Test material form:
- solid: particulate/powder
- Details on test material:
- Sponsor batch no: 151105Purity: 99.9%
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: First vapour pressure
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: Second vapour pressure
Applicant's summary and conclusion
- Conclusions:
- See below
- Executive summary:
The vapour pressure of Beta Ketosulfide was determined in duplicate by the Knudsen Effusion Technique with test temperatures between 20 and 30C. The Clausius-Clapeyron equations were:-
Test 1: lnp=9433/T - 43.0 with a correlation of 0.5092
Test 2: lnp=26270/T - 98.1 with a correlation of 0.9390
From these regressions, the mean vapour pressures at environmental temperatures were calculated to be:
1.11 x 10-4Pa at 20C (0.111 mPa)
2.82 x 10-5Pa at 25C (0.028 mPa)
These results should be interpreted as providing an approximate indication of the vapour pressure only. The melting point of the test substance is approximately 55C, and this restricted the temperature range available for measurements, and hence the reliability of the result.
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