Registration Dossier
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EC number: 232-107-5 | CAS number: 7787-20-4
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:
- 20 February 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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: Knudsen cell
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 214.88 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 306.63 Pa
- Conclusions:
- The vapour pressure of the test substance was determined to be 214.88 Pa at 20ºC and 306.63 Pa at 25 ºC.
- Executive summary:
The vapour pressure of the test substance was determined according to OECD 104/ EU Method A.4, under GLP conditions.The vapour pressure of the test item using the effusion method with Knudsen cell was determined to be 214.88 Pa at 20ºC and 306.63 Pa at 25 ºC.
Reference
Vapour pressure of the test item at 20ºC and 25ºC was calculated on the basis of equation log (p) = f (1/ t) = a-b/(t+273.15) where: p – vapour pressure in Pa, t – temperature in ºC, obtained for four measurement points: 24.40ºC, 27.00ºC, 29.40ºC and 31.80ºC.
Table 1. Summary of vapour pressure determination results.
Vapour pressure at 20ºC |
Vapour pressure at 25ºC |
214.88Pa |
306.63Pa |
Description of key information
Key study. Method according to OECD 104/ EU Method A.4, GLP study.
The vapour pressure of the test item at 20ºC is 214.88 Pa, and
the vapour pressure of the test item at 25ºC is 306.63 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 214.88 Pa
- at the temperature of:
- 20 °C
Additional information
Key study: The vapour pressure of the test substance was determined according to OECD 104/ EU Method A.4, under GLP conditions. The vapour pressure of test substance using the effusion method with Knudsen cell was determined to be 214.88 Pa at 20ºC and 306.63 Pa at 25 ºC.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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