Registration Dossier
Registration Dossier
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EC number: 200-184-4 | CAS number: 53-84-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- June - November 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Remarks:
- isothermal thermogravimetric effusion method
Test material
- Reference substance name:
- Nadide
- EC Number:
- 200-184-4
- EC Name:
- Nadide
- Cas Number:
- 53-84-9
- Molecular formula:
- C21H27N7O14P2
- IUPAC Name:
- nadide
- Details on test material:
- - Substance type: organic
- Physical state: off-white powder
- Storage condition of test material: in refrigerator (2-8°C)
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- ca. 20 °C
- Vapour pressure:
- < 0.002 Pa
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- < 0.004 Pa
Applicant's summary and conclusion
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of nadide. The vapour pressure of the test substance at 20°C and 25°C was: < 1.5 x 10-3 Pa and < 4.2 x 10-3 Pa respectively.
- Executive summary:
The vapour pressure of the test substance (PT) was determined by the isothermal thermogravimetric effusion method (OECD 104). The method is validated in the range 10-8 - 103 Pa using a set of five reference substances with known vapour pressures. Approximately 3.76 and 5.94 mg of the test substance was applied to the surface of a roughened glass plate as a homogeneous layer using a suspension of the test substance in hexane. The plate was dried under nitrogen in the thermogravimetric analyzer (TGA). The weight loss of the test substance was measured continuously as a function of time. The vapour pressure is a function of the temperature and is specified in Pascal (Pa) or in mm Hg. The weight loss of the test substance at 110°C, 120°C, 130°C and 140°C was lower than the weight loss of hexachlorobenzene at the same temperatures. The vapour pressure of the test substance at 20°C and 25°C was: < 1.5 x 10-3 Pa and < 4.2 x 10-3 Pa respectively.
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