Registration Dossier
Registration Dossier
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EC number: 269-798-8 | CAS number: 68333-89-1 The non-volatile, high-boiling residue from the distillation of products from cumene-phenol process. It consists predominantly of substituted phenyl groups crosslinked by carbon-oxygen bonds and phenylaliphatic bonds.
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:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: reliable source
Data source
Reference
- Reference Type:
- publication
- Title:
- Estimation of hydroxyl radical reaction rate constants for gas-phase organic compounds using a structure-reactivity relationship: an update
- Author:
- Kwok ESC, Atkinson R
- Year:
- 1 995
- Bibliographic source:
- Atmos Environ 29: 1685-1695
Materials and methods
- Principles of method if other than guideline:
- Method not reported.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Acetophenone
- EC Number:
- 202-708-7
- EC Name:
- Acetophenone
- Cas Number:
- 98-86-2
- Molecular formula:
- C8H8O
- IUPAC Name:
- 1-phenylethanone
Constituent 1
Results and discussion
% Degradation
- % Degr.:
- 50
- Sampling time:
- 5.8 d
- Test condition:
- 25°C
Any other information on results incl. tables
The experimental determined reaction rate constant for the reaction of acetophenone with OH radicals in the gas-phase is reported to be 2.74 x 10E-12 cm³/molecule x s. Taking into account a OH radical concentration of 5 x 10E5 radicals/cm³ (24 h day) a tropospheric half-life t1/2=5.86 d was calculated by the applicant.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The experimental determined reaction rate constant for the reaction of acetophenone with OH radicals in the gas-phase is reported to be 2.74 x 10E-12 cm³/molecule x s. Taking into account a OH radical concentration of 5 x 10E5 radicals/cm³ (24 h day) a tropospheric half-life t1/2=5.86 d was calculated by the applicant.
- Executive summary:
The experimental determined reaction rate constant for the reaction of acetophenone with OH radicals in the gas-phase is reported to be 2.74 x 10E-12 cm³/molecule x s. Taking into account a OH radical concentration of 5 x 10E5 radicals/cm³ (24 h day) a tropospheric half-life t1/2=5.86 d was calculated by the applicant.
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