Registration Dossier
Registration Dossier
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EC number: 247-119-6 | CAS number: 25586-42-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 30 September 2009- 6 January 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: This study has been performed according to OECD and EC guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
Test material
- Reference substance name:
- Tris(methylphenyl) phosphite
- EC Number:
- 247-119-6
- EC Name:
- Tris(methylphenyl) phosphite
- Cas Number:
- 25586-42-9
- Molecular formula:
- C21H21O3P
- IUPAC Name:
- tris(methylphenyl) phosphite
- Details on test material:
- - Name of test material (as cited in study report): TTP
- Molecular formula: C21H21PO3
- Molecular weight: 352
- Substance type: Clear colourless liquid
- Physical state: liquid
- Analytical purity:>92,1%
- Impurities: - 7,5% Phosphorochloridous acid, bis-methylphenyl)ester
- 0,4% Cresol
(the initial purity information in the study report (which was 99%) has been corrected with an amendement of the report on 9. Nov 2011)
- Isomers composition: -
- Purity test date: -
- Lot/batch No: HR9C77938
- Expiration date of the lot/batch: 31 March 2010
- Stability under test conditions: Stable
- Storage condition of test material: At room temperature in the dark under nitrogen
- Other: Test substance handling: Reactive to moisture, handle in nitrogen environment in glove box
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 20 °C
- Vapour pressure:
- 0.524 Pa
- Remarks on result:
- other: Extrapolation of the curve to 20°C resulted in a value of -4.49 for the log ¿T, 20 of the test substance. Fitting this value in the regression curve, a vapour pressure of 5.24x10-1 Pa = 3.93x10-3 mm Hg was obtained.
Applicant's summary and conclusion
- Conclusions:
- The isothermal thermogravimetric effusion method was chosen for the determination of the vapour pressure of TTP. The vapour pressure of the test substance at 20°C (293K) was 5.24 x 10-1 Pa = 3.93 x 10-3 mm Hg.
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