Registration Dossier

Administrative data

Endpoint:
phototransformation in air
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
2003

Materials and methods

Principles of method if other than guideline:
Calculated with AOP Program v1.92 of EPI-Suite Software. The Atmospheric Oxidation Program (AOPWIN) estimates the rate constant for the atmospheric, gas-phase reaction between photochemically produced hydroxyl radicals and organic chemicals. The rate constants are then used to calculate atmospheric half-lives for organic compounds based upon average atmospheric concentrations of hydroxyl radicals and ozone.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- sensitiser for indirect photolysis: OH radicals
- Concentration of OH radicals: 500000 OH/cm³, 24 h/d

Results and discussion

% Degradation
% Degr.:
50
Dissipation half-life of parent compound
DT50:
16 h

Any other information on results incl. tables

A 24-hour day and an OH radical concentration of 500000 OH/cm³ are assumed for the calculation.

Applicant's summary and conclusion

Executive summary:

In the atmosphere a half-life of 16 h for Menthol is estimated due to reaction with photochemically produced hydroxyl radicals, considering an OH-concentration of 500,000 radicals/cm³ as a 24-h average.