Registration Dossier
Registration Dossier
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EC number: 203-584-7 | CAS number: 108-45-2
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
Data source
Reference
- Reference Type:
- secondary source
- Title:
- Estimation of gas-phase hydroxyl radical rate constants for organic chemicals.
- Author:
- Atkinson R
- Year:
- 1 988
- Bibliographic source:
- Environ. Tox. Chem., 7:435-442 (cited in BUA (1992). GDGH-Advisory Committee on Existing Chemicals of Environmental Relevance (BUA), Phenylenediamines BUA Report 97 (June), S. Hirzel Verlag, Stuttgart, Germany).
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The calculation of reactivity versus OH radicals indicates for the test substance a velocity constant of >200E-12 cm3/molecule/second. Assuming a mean tropospheric OH radical concentration of 5E5 molecules/cm3.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- m-phenylenediamine
- EC Number:
- 203-584-7
- EC Name:
- m-phenylenediamine
- Cas Number:
- 108-45-2
- Molecular formula:
- C6H8N2
- IUPAC Name:
- m-phenylenediamine
Constituent 1
Results and discussion
Dissipation half-life of parent compound
- DT50:
- < 2 h
- Test condition:
- Average tropospheric half-life.
Any other information on results incl. tables
The calculation of reactivity versus OH radicals indicates for the test substance a velocity constant of >200E-12 cm3/molecule/second. Assuming a mean tropospheric OH radical concentration of 5E5 molecules/cm3, the average tropospheric half-life is <2 hours.
Applicant's summary and conclusion
- Conclusions:
- Average tropospheric half-life is <2 hours
- Executive summary:
The calculation of reactivity versus OH radicals indicates for the test substance a velocity constant of >200E-12 cm3/molecule/second. Assuming a mean tropospheric OH radical concentration of 5E5 molecules/cm3, the average tropospheric half-life is <2 hours.
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