Registration Dossier
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EC number: 451-230-7 | CAS number: -
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:
- 16-06-2014 to 17-06-2014
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study performed; not under GLP or GLP status unclear
- 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
- GLP compliance:
- not specified
- Type of method:
- dynamic method
- Temp.:
- 25 °C
- Vapour pressure:
- 0.421 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 42.1 Pa
- Conclusions:
- The vapor pressure the test substance has been extrapolated to be 0.4213 hPa at 25°C or 42.13 Pa at 25°C.
- Executive summary:
The vapour pressure was determined using EU Method A.4 and OECD 104. An extrapolation is made using an non-linear regression with the measuring points according to the permutation matrix of Fremann-Carrol and by Antoine equation to obtain the vapor pressure at 25°C. The boiling temperature is verified by the Siwoloboff method. The Antoine Parameters were determined to be A = 7.6304, B = 2073.46, C = 230.0. According to the calculation of Antoine Parameters (A, B, C), the vapor pressure the test material has been extrapolated to be 0.4213 hPa at 25°C or 42.13 Pa at 25°C.
Reference
After the regression the following Antoine’s parameters are obtained
P(T) = 10{ A - [B/(t+C)] } (mmHg);
P(T) = (1013/760)*10{ A - [B/(t+C)] } (hPa);
with:
A = 7.6304 ; B = 2073.46 ; C = 230.0 ; T =Temperature, °C
Estimation
T (°C) = 206.5
Fp (°C) = 73
P(25) hPa = 0.421259
Description of key information
Vapor Pressure: 42.13 Pa at 25 °C, EU Method A.4, 2014
Key value for chemical safety assessment
- Vapour pressure:
- 42.13 Pa
- at the temperature of:
- 25 °C
Additional information
Key study: EU Method A.4, 2014 : The vapour pressure was determined using EU Method A.4 and OECD 104. An extrapolation is made using an non-linear regression with the measuring points according to the permutation matrix of Fremann-Carrol and by Antoine equation to obtain the vapor pressure at 25°C. The boiling temperature is verified by the Siwoloboff method. The Antoine Parameters were determined to be A = 7.6304, B = 2073.46, C = 230.0. According to the calculation of Antoine Parameters (A, B, C), the vapor pressure the test material has been extrapolated to be 0.4213 hPa at 25°C or 42.13 Pa at 25°C.
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