Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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

Constituent 1
Chemical structure
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

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.