Registration Dossier
Registration Dossier
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EC number: 835-183-3 | CAS number: 83420-16-0
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:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: 190701
- Expiration date of the lot/batch: July 24, 2021
- Purity: 91.0 % w/w
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.003 Pa
- Conclusions:
- The vapour pressure of the sample is 3.11 x 10^-3 Pa or 2.33 x 10^-5 mmHg at 20 °C.
- Executive summary:
This study was performed to determine the vapour pressure of the test item supplied by the Sponsor according to: OECD Guideline No. 104 and EC method A.4.
The test item vapour pressure can be estimated as follows:
3.11 x 10^-3 Pa or 2.33 x 10^-5 mmHg at 20 °C.
Reference
Since the analysis was conducted under high vacuum conditions, the heat could be transferred only by radiation, this caused a consistent difference between the furnace temperature and the sample one and a considerable time for the system to reach equilibrium.
The temperatures reported (registered by the thermocouple under the Knudsen cell) are hence different from the one set and the mass loss has been measured only in 80 minutes time interval within each isotherm, after the system had reached equilibrium. The last isotherms has been discarded because the test item evaporation was too fast and the pump was no more able to maintain the high vacuum.
Description of key information
The test was performed under GLP conditions using the method of EC method A.4, OECD No. 104.
The vapour pressure was determinded as 0.00311 Pa at the temperature of 20 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.003 Pa
- at the temperature of:
- 20 °C
Additional information
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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