Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 412-570-1 | CAS number: 119462-56-5 PERKALINK 900
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:
- October 1992 - January 1993
- 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
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: rounded value
- Conclusions:
- The vapour pressure of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene was determined at 0.00005 Pa at 25 °C.
- Executive summary:
The vapour pressure of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene was measured according to OECD guideline 104, EC method A.4 (Balance method). The vapour pressure was determined at 0.00005 Pa at 25 °C.
Reference
Result:
During pump down there was some initial degassing of the sample. In Run 1 the mass differences rose steadily from an ambient value of 0.268 µg at 24.75 °C (equivalent to about 3.5 X 10-4 Pascal) to a value of 5.37 µg (equivalent to around 7 X 10-3 Pascal) at 70.75 °C and then rapidly to a maximum of 23 µg at 81.3 °C before falling at around this temperature to 4.5 µg over some 10 minutes. The extrapolated value for Run 1 was
Vp (25 °C) = 4.647 X 10-4 Pa
with error range around 19 % and agrees well with the directly measured value.
The initial measured mass difference of Run 2 at 44.9 °C showed a decline by a factor of about 10 over the comparable region in the previous run. Values then rose to a maximum of 12.44 µg at 84.1 °C before falling at around this temperature to 3.28 µg over 10 minutes. The extrapolated value for Run 2 was
Vp (25 °C) = 6.952 X 10-6 Pa
with error range around 90 % and considerable curvature.
The initial measured mass difference of Run 3 at 66.9 °C showed a decline by a factor of about 2 over the comparable region in the previous run. Values then rose to a maximum of 2.384 µg at 84.35 °C. The extrapolated value for Run 3 was
Vp (25 °C) = 1.109 X 10-6 Pa
with error range around 50%.
In each run there is a tendency for the vapour pressure relationship to be curved and despite the rough agreement between the latter runs it is felt judicious to estimate a maximum room temperature by imposing a shallow slope. This yields for the initial mass difference of Run 3 (0.272 µg at 66.9 °C) a rounded value of
Vp (25 °C) = 5 X 10-5 Pa.
Description of key information
The vapour pressure of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene
was determined to be 0.00005 Pa at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
