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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 306-005-7 | CAS number: 95465-90-0
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, information from a review article, acceptable with restrictions
Data source
Reference
- Reference Type:
- review article or handbook
- Title:
- Kinetics and mechanisms of the gas-phase reactions of the hydroxyl radical with organic compounds under atmospheric conditions.
- Author:
- Atkinson R
- Year:
- 1 985
- Bibliographic source:
- Chem. Rev. 85, 69-201
Materials and methods
- Principles of method if other than guideline:
- Measured data from author and other investigators were quality assessed and then used to develop rate constants for different chemicals. The author applied a least squares analysis of degradation rate constants for organic chemicals by hydroxyl radicals developed by other investigators.
- GLP compliance:
- not specified
- Remarks:
- No data reported
Test material
- Reference substance name:
- Butene
- EC Number:
- 246-689-3
- EC Name:
- Butene
- Cas Number:
- 25167-67-3
- Molecular formula:
- C4H8
- IUPAC Name:
- but-1-ene
- Reference substance name:
- But-1-ene
- EC Number:
- 203-449-2
- EC Name:
- But-1-ene
- Cas Number:
- 106-98-9
- IUPAC Name:
- but-1-ene
- Details on test material:
- No data reported
Constituent 1
Constituent 2
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
No data reported
Study design
- Estimation method (if used):
- No data reported
- Light source:
- other: No data reported
- Details on light source:
- No data reported
- Details on test conditions:
- No data reported
Results and discussion
- Preliminary study:
- No data reported
- Test performance:
- No data reported
Dissipation half-life of parent compound
- DT50:
- 0.5 d
- Test condition:
- No further details
- Results with reference substance:
- No data reported
Any other information on results incl. tables
Based on a calculated rate constant of 3.14E-11 cm3molecule-1sec-1, and a hydroxyl radical concentration of 5E5 molecule.cm-3
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Remarks:
- Review article
- Conclusions:
- The half-life of but-1-ene is 0.5 days
- Executive summary:
The half-life of but-1-ene is 0.5days. Measured data from author and other investigators were quality assessed and then used to develop rate constants for different chemicals. Therefore, this value represents a valid rate constant for but-1-ene based on all valid studies at the time of publication.
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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