Registration Dossier

Environmental fate & pathways

Phototransformation in air

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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:
1985
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
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
No data reported
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.