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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 203-565-3 | CAS number: 108-26-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- other: Prediction model
- Title:
- Vapour pressure by EPI (Estimation Programs Interface) Suite
- Author:
- Sustainability Support Service (Europe) AB - estimated
- Year:
- 2 011
- Bibliographic source:
- Estimation Programs Interface Suite™ United States Environmental Protection Agency, Washington, DC, USA. version 4.1
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Modeling database
- Principles of method if other than guideline:
- Data is from EPI Suite estimation database
- GLP compliance:
- no
- Type of method:
- other: estimation
Test material
- Reference substance name:
- 2,4-dihydro-5-methyl-3H-pyrazol-3-one
- EC Number:
- 203-565-3
- EC Name:
- 2,4-dihydro-5-methyl-3H-pyrazol-3-one
- Cas Number:
- 108-26-9
- Molecular formula:
- C4H6N2O
- IUPAC Name:
- 2,4-dihydro-5-methyl-3H-pyrazol-3-one
- Details on test material:
- - Name of test material: 2,4-dihydro-5-methyl-3H-pyrazol-3-one
- Substance type: Organic
- Physical state: solid
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- 0.001 Pa
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of 2,4-dihydro-5-methyl-3H-pyrazol-3-one was estimated to be 0.00126 Pa at 25 deg C.
- Executive summary:
The vapour pressure of 2,4-dihydro-5-methyl-3H-pyrazol-3-one was estimated to be 0.00126 Pa at 25 deg C.
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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