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EC number: 215-343-3 | CAS number: 1322-93-6
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- March 04, 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- March 23, 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- August 1996
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
Test material
- Reference substance name:
- Sodium diisopropylnaphthalenesulphonate
- EC Number:
- 215-343-3
- EC Name:
- Sodium diisopropylnaphthalenesulphonate
- Cas Number:
- 1322-93-6
- Molecular formula:
- C16H20O3S.Na
- IUPAC Name:
- sodium diisopropylnaphthalene-sulfonate
- Test material form:
- solid: particulate/powder
- Details on test material:
- white to off-white lumps
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 Pa
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 Pa
Any other information on results incl. tables
Weight loss was observed from the start of the experiment, caused by evaporation of volatile components (i.e. impurities).Starting from 220°C non-linear weight losses were observed due to reaction and/or decomposition of the test item (results are archived in the raw data).
In the range of 180°C - 210°C alog p versus 1/T curve for the test itemcould not be constructed due to the fact that the coefficient of correlation (r) was < 0.99 (data is archived in the raw data).
Since no accurate vapour pressure could be calculated from the obtained results, the weight losses of the test item were compared with the results of the most similar reference substance, benzo(ghi)perylene, at the same temperatures. Since the weight loss of the test item was lower than the weight loss of the reference compound, the vapour pressure of the test item is considered to be below the vapour pressure ofbenzo(ghi)perylene.
Applicant's summary and conclusion
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of CH04207.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:
20°C 25°C
[Pa] [mm Hg] [Pa] [mm Hg]
Test item < 1.3 * 10^-8 < 1.0 * 10^-10 < 5.5 * 10^-8 < 4.1 * 10^-10
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