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Environmental fate & pathways

Phototransformation in air

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Reference
Endpoint:
phototransformation in air
Type of information:
(Q)SAR
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
Justification for type of information:
QSAR prediction
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
Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- sensitiser for indirect photolysis: OH radicals
- Concentration of OH radicals: 0.5 E6 OH/cm³, 24 h/d
Key result
% Degr.:
50
Key result
DT50:
4.3 h
Test condition:
at 25 °C

A 24-hour day and an OH radical concentration of 0.5*106 OH/cm³ are assumed for the calculation.

Rate constant = 89*10 -12 cm3/(molecule*sec)

Conclusions:
The photodegradation of cyclohex-3-ene-1-carbaldehyde was calculated at t ½ = 4.3 hours at 25 °C and rate constant = 89E-12 cm3/(molecule*sec) by AOPWIN v. 1.92.
Executive summary:

The photodegradation of cyclohex-3-ene-1-carbaldehyde was calculated at t ½ = 4.3 hours at 25 °C and rate constant = 89E-12 cm3/(molecule*sec) by AOPWIN v. 1.92.

Description of key information

The photodegradation of cyclohex-3-ene-1-carbaldehyde was calculated at t ½ = 4.3 hours at 25 °C and rate constant = 89E-12 cm3/(molecule*sec) by AOPWIN v. 1.92.

Key value for chemical safety assessment

Half-life in air:
4.3 h
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information