Registration Dossier
Registration Dossier
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EC number: 203-490-6 | CAS number: 107-43-7
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010 MAR 19 to 2010 MAY 21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- The analysis was performed according to directive 440/2008/EC, analysis A4, gas saturation method. Reporting is sufficient for reproduction of the study.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- gas saturation method
- Temp.:
- <= 25 °C
- Vapour pressure:
- ca. 0.05 Pa
- Remarks on result:
- other: ln(P)= -2.946
- Temp.:
- <= 50 °C
- Vapour pressure:
- ca. 0.26 Pa
- Remarks on result:
- other: ln(P)=-1.340
- Temp.:
- 100 °C
- Vapour pressure:
- ca. 2.47 Pa
- Remarks on result:
- other: ln(P)0.906
- Temp.:
- 125 °C
- Vapour pressure:
- ca. 7.98 Pa
- Remarks on result:
- other: ln(P)=2.077. Temperature dependness follows the equation: y = -5850.8x + 16.7, R^2=0.9985
- Conclusions:
- Betaine is not volatile at 25°C and does not exhibit any volatilization with increasing temperature up to 25°C.
- Executive summary:
Betaine is not volatile at 25°C and does not exhibit any volatilization with increasing temperature up to 25°C.
Reference
Description of key information
Study was performed in temperatures 298.15, 323.15, 373.15 and 398.15 Kelvin following directive 440/2008/EC, analysis A4, gas saturation method and the calculation of temperature according to OECD guideline method 104. Study was performed in the commercial laboratory based the best practice found.
Key value for chemical safety assessment
- Vapour pressure:
- 0.05 Pa
- at the temperature of:
- 25 °C
Additional information
Betaine is non-volatile at temperature 20-25°C.
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