Registration Dossier
Registration Dossier
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EC number: 201-939-0 | CAS number: 89-78-1
Phototransformation in air
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:
- 2 003
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 substance name:
- Menthol
- EC Number:
- 201-939-0
- EC Name:
- Menthol
- Cas Number:
- 89-78-1
- Molecular formula:
- C10H20O
- IUPAC Name:
- 2-isopropyl-5-methylcyclohexanol
Constituent 1
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.
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