Registration Dossier

Administrative data

Endpoint:
phototransformation in air
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Data source

Reference
Reference Type:
other: EPIWIN calculation
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Principles of method if other than guideline:
calculated using SRC AOP v1.92
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
EC Number:
278-355-8
EC Name:
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
Cas Number:
75980-60-8
Molecular formula:
C22H21O2P
IUPAC Name:
(mesitylcarbonyl)(diphenyl)phosphine oxide
Details on test material:
- Name of test material (as cited in study report): Diphenyl(2,4,6-trimethylbezoyl-phosphine oxide

Study design

Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 500000
- Degradation rate constant: 0.00000000003593 cm³/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Computer programme: SRC AOP v1.92 21 Aug 2008
- Calculated t 1/2 is based on a 24 h day

Results and discussion

Dissipation half-life of parent compound
DT50:
10.72 h

Applicant's summary and conclusion