Registration Dossier

Administrative data

Endpoint:
phototransformation in air
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
disregarded due to major methodological deficiencies
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Report and calculs not available

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1995

Materials and methods

Test material

Constituent 1
Chemical structure
Reference substance name:
Vanillin
EC Number:
204-465-2
EC Name:
Vanillin
Cas Number:
121-33-5
Molecular formula:
C8H8O3
IUPAC Name:
4-hydroxy-3-methoxybenzaldehyde

Study design

Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 1.5 x 106 OH-radicals per cm3
- Degradation rate constant: 27.3 x 10-12 cm3 molecule-1 sec-1
- Temperature for which rate constant was calculated: 25°C
- Computer programme: Calculated according to Atkinson (AOPWIN, Version 1.70, June 1995)
- Other:


OTHER ESTIMATION METHOD:
Light source:
sunlight

Results and discussion

Any other information on results incl. tables

Vanillin calculated Half-life: 4.7 hours

Applicant's summary and conclusion