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EC number: 219-641-4 | CAS number: 2489-05-6
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Remarks:
- isothermal TGA
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 Pa
- Conclusions:
- VP is < 8.4E-7 Pa at 20 °C and < 2.9E-6 Pa at 25 °C
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- not specified
- Type of method:
- gas saturation method
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: Calculated (MPBP v1.40)
- Temp.:
- 100 °C
- Vapour pressure:
- < 0.007 Pa
- Remarks on result:
- other: experimental value
Referenceopen allclose all
The vapour pressure of the test substance (PT) was determined by the isothermal thermogravimetric effusion method. The method is validated in the range 10E-8 - 10E3 Pa using a set of five reference substances with known vapour pressures (see paragraph 8.5). The validity of the method was verified maximum one month before this study using hexachlorobenzene (>99%, Fluka Chemie, Buchs, Switzerland) as reference control substance. The logarithm of the evaporation rate at 20°C (log vT, 20) deviated
Description of key information
The vapour pressure of silver behenate was determined by the isothermal thermogravimetric effusion method and is <0.00000084 Pa. The vapour pressure of 0.000065 Pa is used for the chemical safet assessment of behenate.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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